./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3546f53c7569eee91b8cae6c9acc440723ca6371 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 17:52:32,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 17:52:32,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 17:52:32,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 17:52:32,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 17:52:32,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 17:52:32,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 17:52:32,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 17:52:32,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 17:52:32,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 17:52:32,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 17:52:32,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 17:52:32,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 17:52:32,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 17:52:32,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 17:52:32,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 17:52:32,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 17:52:32,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 17:52:32,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 17:52:32,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 17:52:32,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 17:52:32,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 17:52:32,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 17:52:32,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 17:52:32,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 17:52:32,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 17:52:32,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 17:52:32,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 17:52:32,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 17:52:32,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 17:52:32,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 17:52:32,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 17:52:32,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 17:52:32,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 17:52:32,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 17:52:32,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 17:52:32,905 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 17:52:32,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 17:52:32,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 17:52:32,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 17:52:32,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 17:52:32,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 17:52:32,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 17:52:32,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 17:52:32,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 17:52:32,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 17:52:32,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 17:52:32,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 17:52:32,944 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 17:52:32,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 17:52:32,945 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 17:52:32,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 17:52:32,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 17:52:32,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 17:52:32,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 17:52:32,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 17:52:32,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 17:52:32,947 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 17:52:32,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 17:52:32,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 17:52:32,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 17:52:32,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 17:52:32,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 17:52:32,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 17:52:32,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:52:32,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 17:52:32,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 17:52:32,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 17:52:32,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 17:52:32,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 17:52:32,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 17:52:32,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 17:52:32,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3546f53c7569eee91b8cae6c9acc440723ca6371 [2021-10-13 17:52:33,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 17:52:33,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 17:52:33,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 17:52:33,363 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 17:52:33,364 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 17:52:33,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-13 17:52:33,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c7adb0f1/2678deff27c04e2a987890b3ec0a638d/FLAG40ae6f9a7 [2021-10-13 17:52:34,030 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 17:52:34,031 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-13 17:52:34,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c7adb0f1/2678deff27c04e2a987890b3ec0a638d/FLAG40ae6f9a7 [2021-10-13 17:52:34,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c7adb0f1/2678deff27c04e2a987890b3ec0a638d [2021-10-13 17:52:34,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 17:52:34,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 17:52:34,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 17:52:34,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 17:52:34,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 17:52:34,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7675da13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34, skipping insertion in model container [2021-10-13 17:52:34,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 17:52:34,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 17:52:34,640 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[2798,2811] [2021-10-13 17:52:34,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:52:34,656 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 17:52:34,687 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[2798,2811] [2021-10-13 17:52:34,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:52:34,709 INFO L208 MainTranslator]: Completed translation [2021-10-13 17:52:34,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34 WrapperNode [2021-10-13 17:52:34,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 17:52:34,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 17:52:34,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 17:52:34,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 17:52:34,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 17:52:34,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 17:52:34,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 17:52:34,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 17:52:34,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 17:52:34,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 17:52:34,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 17:52:34,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 17:52:34,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (1/1) ... [2021-10-13 17:52:34,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:52:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:52:34,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 17:52:34,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 17:52:34,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 17:52:34,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 17:52:34,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 17:52:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 17:52:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 17:52:34,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 17:52:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 17:52:34,972 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 17:52:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 17:52:34,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 17:52:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 17:52:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 17:52:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 17:52:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 17:52:34,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 17:52:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 17:52:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 17:52:34,976 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 17:52:35,569 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 17:52:35,569 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-13 17:52:35,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:52:35 BoogieIcfgContainer [2021-10-13 17:52:35,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 17:52:35,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 17:52:35,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 17:52:35,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 17:52:35,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:52:34" (1/3) ... [2021-10-13 17:52:35,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb8fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:52:35, skipping insertion in model container [2021-10-13 17:52:35,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:52:34" (2/3) ... [2021-10-13 17:52:35,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61bb8fa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:52:35, skipping insertion in model container [2021-10-13 17:52:35,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:52:35" (3/3) ... [2021-10-13 17:52:35,588 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-10-13 17:52:35,594 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 17:52:35,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 17:52:35,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 17:52:35,594 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 17:52:35,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,638 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,639 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,639 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,639 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,640 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,640 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,641 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,643 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,644 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,645 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,646 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,647 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,648 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,651 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,651 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,651 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,651 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,651 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,652 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,653 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,654 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,654 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,654 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,655 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,655 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,655 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,655 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,655 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,656 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,657 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,657 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,657 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,658 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,658 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,658 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,658 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,658 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,659 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,659 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,659 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,663 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,663 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,663 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,663 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,664 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,664 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,666 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,667 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,667 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,669 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,669 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,670 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,670 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,670 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,670 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,672 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,673 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,673 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,673 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,673 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,673 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:52:35,693 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-13 17:52:35,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 17:52:35,756 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 17:52:35,756 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-13 17:52:35,777 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 17:52:35,790 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 162 transitions, 356 flow [2021-10-13 17:52:35,794 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 162 transitions, 356 flow [2021-10-13 17:52:35,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 162 transitions, 356 flow [2021-10-13 17:52:35,903 INFO L129 PetriNetUnfolder]: 6/158 cut-off events. [2021-10-13 17:52:35,903 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-13 17:52:35,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 158 events. 6/158 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2021-10-13 17:52:35,922 INFO L116 LiptonReduction]: Number of co-enabled transitions 3864 [2021-10-13 17:52:42,595 INFO L131 LiptonReduction]: Checked pairs total: 12207 [2021-10-13 17:52:42,596 INFO L133 LiptonReduction]: Total number of compositions: 145 [2021-10-13 17:52:42,607 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 46 transitions, 124 flow [2021-10-13 17:52:42,869 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4146 states, 4145 states have (on average 4.15006031363088) internal successors, (17202), 4145 states have internal predecessors, (17202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 4146 states, 4145 states have (on average 4.15006031363088) internal successors, (17202), 4145 states have internal predecessors, (17202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 17:52:42,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:42,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:42,944 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash 411533357, now seen corresponding path program 1 times [2021-10-13 17:52:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:42,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523395321] [2021-10-13 17:52:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:42,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:43,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:43,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523395321] [2021-10-13 17:52:43,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523395321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:43,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:43,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:52:43,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264680105] [2021-10-13 17:52:43,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 17:52:43,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 17:52:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 17:52:43,301 INFO L87 Difference]: Start difference. First operand has 4146 states, 4145 states have (on average 4.15006031363088) internal successors, (17202), 4145 states have internal predecessors, (17202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:43,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:43,420 INFO L93 Difference]: Finished difference Result 4146 states and 15422 transitions. [2021-10-13 17:52:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 17:52:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-13 17:52:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:43,543 INFO L225 Difference]: With dead ends: 4146 [2021-10-13 17:52:43,543 INFO L226 Difference]: Without dead ends: 4146 [2021-10-13 17:52:43,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 17:52:43,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2021-10-13 17:52:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4146. [2021-10-13 17:52:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 4145 states have (on average 3.720627261761158) internal successors, (15422), 4145 states have internal predecessors, (15422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 15422 transitions. [2021-10-13 17:52:43,879 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 15422 transitions. Word has length 25 [2021-10-13 17:52:43,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:43,880 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 15422 transitions. [2021-10-13 17:52:43,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:43,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 15422 transitions. [2021-10-13 17:52:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:43,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:43,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:43,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 17:52:43,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:43,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1000026437, now seen corresponding path program 1 times [2021-10-13 17:52:43,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:43,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564571447] [2021-10-13 17:52:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:43,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:44,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:44,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564571447] [2021-10-13 17:52:44,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564571447] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:44,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:44,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:52:44,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043832798] [2021-10-13 17:52:44,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:52:44,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:44,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:52:44,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:52:44,415 INFO L87 Difference]: Start difference. First operand 4146 states and 15422 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:45,331 INFO L93 Difference]: Finished difference Result 7808 states and 26778 transitions. [2021-10-13 17:52:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:52:45,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:45,419 INFO L225 Difference]: With dead ends: 7808 [2021-10-13 17:52:45,419 INFO L226 Difference]: Without dead ends: 7808 [2021-10-13 17:52:45,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 230.7ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:52:45,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2021-10-13 17:52:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 4742. [2021-10-13 17:52:45,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4742 states, 4741 states have (on average 3.6407930816283485) internal successors, (17261), 4741 states have internal predecessors, (17261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:45,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 17261 transitions. [2021-10-13 17:52:45,783 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 17261 transitions. Word has length 38 [2021-10-13 17:52:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:45,786 INFO L470 AbstractCegarLoop]: Abstraction has 4742 states and 17261 transitions. [2021-10-13 17:52:45,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 17261 transitions. [2021-10-13 17:52:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:45,814 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:45,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:45,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 17:52:45,816 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:45,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:45,825 INFO L82 PathProgramCache]: Analyzing trace with hash 518717173, now seen corresponding path program 2 times [2021-10-13 17:52:45,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:45,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683511562] [2021-10-13 17:52:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:45,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:46,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:46,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683511562] [2021-10-13 17:52:46,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683511562] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:46,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:46,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 17:52:46,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741109581] [2021-10-13 17:52:46,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 17:52:46,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 17:52:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 17:52:46,270 INFO L87 Difference]: Start difference. First operand 4742 states and 17261 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:46,705 INFO L93 Difference]: Finished difference Result 7191 states and 25098 transitions. [2021-10-13 17:52:46,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 17:52:46,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:46,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:46,771 INFO L225 Difference]: With dead ends: 7191 [2021-10-13 17:52:46,771 INFO L226 Difference]: Without dead ends: 6064 [2021-10-13 17:52:46,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 170.8ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:52:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2021-10-13 17:52:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 5834. [2021-10-13 17:52:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5834 states, 5833 states have (on average 3.5616320932624723) internal successors, (20775), 5833 states have internal predecessors, (20775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 20775 transitions. [2021-10-13 17:52:47,127 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 20775 transitions. Word has length 38 [2021-10-13 17:52:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:47,128 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 20775 transitions. [2021-10-13 17:52:47,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 20775 transitions. [2021-10-13 17:52:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:47,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:47,154 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:47,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 17:52:47,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash -225624279, now seen corresponding path program 3 times [2021-10-13 17:52:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:47,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021990141] [2021-10-13 17:52:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:47,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:47,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:47,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021990141] [2021-10-13 17:52:47,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021990141] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:47,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:47,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:52:47,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087004709] [2021-10-13 17:52:47,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:52:47,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:47,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:52:47,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:52:47,389 INFO L87 Difference]: Start difference. First operand 5834 states and 20775 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:48,688 INFO L93 Difference]: Finished difference Result 9622 states and 30061 transitions. [2021-10-13 17:52:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 17:52:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:48,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:48,730 INFO L225 Difference]: With dead ends: 9622 [2021-10-13 17:52:48,731 INFO L226 Difference]: Without dead ends: 8112 [2021-10-13 17:52:48,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 413.2ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 17:52:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-10-13 17:52:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 5450. [2021-10-13 17:52:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 3.2650027527986785) internal successors, (17791), 5449 states have internal predecessors, (17791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 17791 transitions. [2021-10-13 17:52:49,065 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 17791 transitions. Word has length 38 [2021-10-13 17:52:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:49,066 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 17791 transitions. [2021-10-13 17:52:49,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:49,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 17791 transitions. [2021-10-13 17:52:49,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:49,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:49,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:49,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 17:52:49,088 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:49,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1662400279, now seen corresponding path program 4 times [2021-10-13 17:52:49,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:49,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413510104] [2021-10-13 17:52:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:49,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:49,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:49,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413510104] [2021-10-13 17:52:49,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413510104] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:49,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:49,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:52:49,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330626478] [2021-10-13 17:52:49,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:52:49,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:49,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:52:49,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:52:49,217 INFO L87 Difference]: Start difference. First operand 5450 states and 17791 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:50,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:50,043 INFO L93 Difference]: Finished difference Result 9460 states and 29762 transitions. [2021-10-13 17:52:50,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:52:50,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:50,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:50,090 INFO L225 Difference]: With dead ends: 9460 [2021-10-13 17:52:50,091 INFO L226 Difference]: Without dead ends: 9442 [2021-10-13 17:52:50,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 278.9ms TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:52:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9442 states. [2021-10-13 17:52:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9442 to 5584. [2021-10-13 17:52:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 3.2713594841483076) internal successors, (18264), 5583 states have internal predecessors, (18264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 18264 transitions. [2021-10-13 17:52:50,459 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 18264 transitions. Word has length 38 [2021-10-13 17:52:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:50,460 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 18264 transitions. [2021-10-13 17:52:50,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 18264 transitions. [2021-10-13 17:52:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:50,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:50,481 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:50,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 17:52:50,483 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:50,484 INFO L82 PathProgramCache]: Analyzing trace with hash -172286121, now seen corresponding path program 5 times [2021-10-13 17:52:50,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:50,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217452079] [2021-10-13 17:52:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:50,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:50,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:50,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:50,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:50,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217452079] [2021-10-13 17:52:50,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217452079] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:50,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:50,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:52:50,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172731180] [2021-10-13 17:52:50,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:52:50,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:50,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:52:50,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:52:50,690 INFO L87 Difference]: Start difference. First operand 5584 states and 18264 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:51,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:51,907 INFO L93 Difference]: Finished difference Result 9916 states and 30971 transitions. [2021-10-13 17:52:51,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 17:52:51,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:51,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:51,954 INFO L225 Difference]: With dead ends: 9916 [2021-10-13 17:52:51,955 INFO L226 Difference]: Without dead ends: 9898 [2021-10-13 17:52:51,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 408.6ms TimeCoverageRelationStatistics Valid=500, Invalid=1570, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 17:52:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2021-10-13 17:52:52,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 5704. [2021-10-13 17:52:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.264422233911976) internal successors, (18617), 5703 states have internal predecessors, (18617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 18617 transitions. [2021-10-13 17:52:52,243 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 18617 transitions. Word has length 38 [2021-10-13 17:52:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:52,244 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 18617 transitions. [2021-10-13 17:52:52,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 18617 transitions. [2021-10-13 17:52:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:52,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:52,265 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:52,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 17:52:52,266 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:52,266 INFO L82 PathProgramCache]: Analyzing trace with hash -834292741, now seen corresponding path program 6 times [2021-10-13 17:52:52,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:52,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141217809] [2021-10-13 17:52:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:52,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:52,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:52,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141217809] [2021-10-13 17:52:52,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141217809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:52,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:52,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:52:52,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283520525] [2021-10-13 17:52:52,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:52:52,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:52,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:52:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:52:52,519 INFO L87 Difference]: Start difference. First operand 5704 states and 18617 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:53,712 INFO L93 Difference]: Finished difference Result 9772 states and 30506 transitions. [2021-10-13 17:52:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 17:52:53,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:53,748 INFO L225 Difference]: With dead ends: 9772 [2021-10-13 17:52:53,748 INFO L226 Difference]: Without dead ends: 9496 [2021-10-13 17:52:53,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 391.2ms TimeCoverageRelationStatistics Valid=385, Invalid=1421, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 17:52:53,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2021-10-13 17:52:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 5872. [2021-10-13 17:52:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 3.273718276273207) internal successors, (19220), 5871 states have internal predecessors, (19220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 19220 transitions. [2021-10-13 17:52:53,980 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 19220 transitions. Word has length 38 [2021-10-13 17:52:53,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:53,981 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 19220 transitions. [2021-10-13 17:52:53,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 19220 transitions. [2021-10-13 17:52:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:54,000 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:54,001 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:54,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 17:52:54,001 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -418322777, now seen corresponding path program 7 times [2021-10-13 17:52:54,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:54,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224387125] [2021-10-13 17:52:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:54,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:54,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:54,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:54,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224387125] [2021-10-13 17:52:54,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224387125] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:54,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:54,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:52:54,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582689237] [2021-10-13 17:52:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:52:54,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:52:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:52:54,214 INFO L87 Difference]: Start difference. First operand 5872 states and 19220 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:55,743 INFO L93 Difference]: Finished difference Result 10116 states and 31464 transitions. [2021-10-13 17:52:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 17:52:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:55,781 INFO L225 Difference]: With dead ends: 10116 [2021-10-13 17:52:55,781 INFO L226 Difference]: Without dead ends: 9838 [2021-10-13 17:52:55,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 532.4ms TimeCoverageRelationStatistics Valid=540, Invalid=2112, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 17:52:55,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9838 states. [2021-10-13 17:52:56,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9838 to 5976. [2021-10-13 17:52:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5976 states, 5975 states have (on average 3.27347280334728) internal successors, (19559), 5975 states have internal predecessors, (19559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:56,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 19559 transitions. [2021-10-13 17:52:56,064 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 19559 transitions. Word has length 38 [2021-10-13 17:52:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:56,065 INFO L470 AbstractCegarLoop]: Abstraction has 5976 states and 19559 transitions. [2021-10-13 17:52:56,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 19559 transitions. [2021-10-13 17:52:56,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:56,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:56,086 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:56,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 17:52:56,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:56,088 INFO L82 PathProgramCache]: Analyzing trace with hash 794666965, now seen corresponding path program 8 times [2021-10-13 17:52:56,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:56,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979601367] [2021-10-13 17:52:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:56,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:56,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:56,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979601367] [2021-10-13 17:52:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979601367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:56,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:56,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:52:56,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797570375] [2021-10-13 17:52:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:52:56,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:52:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:52:56,252 INFO L87 Difference]: Start difference. First operand 5976 states and 19559 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:56,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:56,980 INFO L93 Difference]: Finished difference Result 9988 states and 30909 transitions. [2021-10-13 17:52:56,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:52:56,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:56,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:57,011 INFO L225 Difference]: With dead ends: 9988 [2021-10-13 17:52:57,012 INFO L226 Difference]: Without dead ends: 9970 [2021-10-13 17:52:57,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 257.8ms TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2021-10-13 17:52:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2021-10-13 17:52:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 5988. [2021-10-13 17:52:57,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5988 states, 5987 states have (on average 3.2617337564723567) internal successors, (19528), 5987 states have internal predecessors, (19528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 19528 transitions. [2021-10-13 17:52:57,292 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 19528 transitions. Word has length 38 [2021-10-13 17:52:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:57,292 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 19528 transitions. [2021-10-13 17:52:57,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:57,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 19528 transitions. [2021-10-13 17:52:57,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:57,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:57,310 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:57,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 17:52:57,311 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:57,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1040019435, now seen corresponding path program 9 times [2021-10-13 17:52:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:57,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636517691] [2021-10-13 17:52:57,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:57,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:57,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:57,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636517691] [2021-10-13 17:52:57,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636517691] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:57,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:57,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:52:57,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256442345] [2021-10-13 17:52:57,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:52:57,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:52:57,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:52:57,443 INFO L87 Difference]: Start difference. First operand 5988 states and 19528 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:58,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:58,528 INFO L93 Difference]: Finished difference Result 10560 states and 32333 transitions. [2021-10-13 17:52:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 17:52:58,530 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:58,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:58,566 INFO L225 Difference]: With dead ends: 10560 [2021-10-13 17:52:58,566 INFO L226 Difference]: Without dead ends: 10534 [2021-10-13 17:52:58,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 418.3ms TimeCoverageRelationStatistics Valid=416, Invalid=1306, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 17:52:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2021-10-13 17:52:58,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 5842. [2021-10-13 17:52:58,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5842 states, 5841 states have (on average 3.263482280431433) internal successors, (19062), 5841 states have internal predecessors, (19062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:58,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 19062 transitions. [2021-10-13 17:52:58,799 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 19062 transitions. Word has length 38 [2021-10-13 17:52:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:52:58,801 INFO L470 AbstractCegarLoop]: Abstraction has 5842 states and 19062 transitions. [2021-10-13 17:52:58,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:58,801 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 19062 transitions. [2021-10-13 17:52:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:52:58,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:52:58,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:52:58,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 17:52:58,819 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:52:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:52:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash -2034333055, now seen corresponding path program 10 times [2021-10-13 17:52:58,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:52:58,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062305317] [2021-10-13 17:52:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:52:58,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:52:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:52:58,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:52:58,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:52:58,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062305317] [2021-10-13 17:52:58,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062305317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:52:58,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:52:58,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:52:58,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059856786] [2021-10-13 17:52:58,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:52:58,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:52:58,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:52:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:52:58,972 INFO L87 Difference]: Start difference. First operand 5842 states and 19062 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:52:59,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:52:59,766 INFO L93 Difference]: Finished difference Result 8716 states and 27192 transitions. [2021-10-13 17:52:59,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:52:59,767 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:52:59,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:52:59,793 INFO L225 Difference]: With dead ends: 8716 [2021-10-13 17:52:59,794 INFO L226 Difference]: Without dead ends: 8680 [2021-10-13 17:52:59,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 276.2ms TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:52:59,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2021-10-13 17:52:59,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 6226. [2021-10-13 17:52:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6226 states, 6225 states have (on average 3.25285140562249) internal successors, (20249), 6225 states have internal predecessors, (20249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 20249 transitions. [2021-10-13 17:53:00,014 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 20249 transitions. Word has length 38 [2021-10-13 17:53:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:00,014 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 20249 transitions. [2021-10-13 17:53:00,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 20249 transitions. [2021-10-13 17:53:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:00,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:00,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:00,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 17:53:00,033 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash -739227799, now seen corresponding path program 11 times [2021-10-13 17:53:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:00,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609900157] [2021-10-13 17:53:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:00,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:00,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:00,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609900157] [2021-10-13 17:53:00,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609900157] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:00,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:00,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:00,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890858451] [2021-10-13 17:53:00,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:00,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:00,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:00,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:00,181 INFO L87 Difference]: Start difference. First operand 6226 states and 20249 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:01,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:01,240 INFO L93 Difference]: Finished difference Result 10282 states and 31577 transitions. [2021-10-13 17:53:01,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 17:53:01,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:01,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:01,280 INFO L225 Difference]: With dead ends: 10282 [2021-10-13 17:53:01,281 INFO L226 Difference]: Without dead ends: 9972 [2021-10-13 17:53:01,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 326.9ms TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 17:53:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2021-10-13 17:53:01,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 6216. [2021-10-13 17:53:01,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.2479485116653257) internal successors, (20186), 6215 states have internal predecessors, (20186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:01,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 20186 transitions. [2021-10-13 17:53:01,507 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 20186 transitions. Word has length 38 [2021-10-13 17:53:01,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:01,507 INFO L470 AbstractCegarLoop]: Abstraction has 6216 states and 20186 transitions. [2021-10-13 17:53:01,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 20186 transitions. [2021-10-13 17:53:01,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:01,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:01,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:01,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 17:53:01,525 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:01,526 INFO L82 PathProgramCache]: Analyzing trace with hash -323257835, now seen corresponding path program 12 times [2021-10-13 17:53:01,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:01,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337562491] [2021-10-13 17:53:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:01,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:01,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:01,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:01,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337562491] [2021-10-13 17:53:01,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337562491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:01,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:01,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:01,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679385525] [2021-10-13 17:53:01,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:01,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:01,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:01,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:01,702 INFO L87 Difference]: Start difference. First operand 6216 states and 20186 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:03,140 INFO L93 Difference]: Finished difference Result 11038 states and 33631 transitions. [2021-10-13 17:53:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-13 17:53:03,141 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:03,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:03,163 INFO L225 Difference]: With dead ends: 11038 [2021-10-13 17:53:03,163 INFO L226 Difference]: Without dead ends: 10654 [2021-10-13 17:53:03,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 539.4ms TimeCoverageRelationStatistics Valid=487, Invalid=1963, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 17:53:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2021-10-13 17:53:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 5998. [2021-10-13 17:53:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5998 states, 5997 states have (on average 3.238119059529765) internal successors, (19419), 5997 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 19419 transitions. [2021-10-13 17:53:03,382 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 19419 transitions. Word has length 38 [2021-10-13 17:53:03,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:03,382 INFO L470 AbstractCegarLoop]: Abstraction has 5998 states and 19419 transitions. [2021-10-13 17:53:03,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 19419 transitions. [2021-10-13 17:53:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:03,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:03,396 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:03,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 17:53:03,397 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:03,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:03,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1071534799, now seen corresponding path program 13 times [2021-10-13 17:53:03,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:03,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196679117] [2021-10-13 17:53:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:03,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:03,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:03,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196679117] [2021-10-13 17:53:03,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196679117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:03,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:03,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:03,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837678276] [2021-10-13 17:53:03,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:03,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:03,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:03,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:03,555 INFO L87 Difference]: Start difference. First operand 5998 states and 19419 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:04,499 INFO L93 Difference]: Finished difference Result 9106 states and 28134 transitions. [2021-10-13 17:53:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:53:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:04,518 INFO L225 Difference]: With dead ends: 9106 [2021-10-13 17:53:04,518 INFO L226 Difference]: Without dead ends: 8730 [2021-10-13 17:53:04,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 343.4ms TimeCoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:53:04,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8730 states. [2021-10-13 17:53:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8730 to 6168. [2021-10-13 17:53:04,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6168 states, 6167 states have (on average 3.251662072320415) internal successors, (20053), 6167 states have internal predecessors, (20053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 20053 transitions. [2021-10-13 17:53:04,861 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 20053 transitions. Word has length 38 [2021-10-13 17:53:04,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:04,862 INFO L470 AbstractCegarLoop]: Abstraction has 6168 states and 20053 transitions. [2021-10-13 17:53:04,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 20053 transitions. [2021-10-13 17:53:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:04,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:04,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:04,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 17:53:04,882 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2013932553, now seen corresponding path program 14 times [2021-10-13 17:53:04,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:04,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296690837] [2021-10-13 17:53:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:04,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:04,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:04,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296690837] [2021-10-13 17:53:04,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296690837] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:04,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:04,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:53:04,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623011931] [2021-10-13 17:53:04,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:53:04,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:53:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:53:04,988 INFO L87 Difference]: Start difference. First operand 6168 states and 20053 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:05,466 INFO L93 Difference]: Finished difference Result 6700 states and 19940 transitions. [2021-10-13 17:53:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:53:05,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:05,484 INFO L225 Difference]: With dead ends: 6700 [2021-10-13 17:53:05,484 INFO L226 Difference]: Without dead ends: 5552 [2021-10-13 17:53:05,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 132.0ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:53:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-10-13 17:53:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 4230. [2021-10-13 17:53:05,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4229 states have (on average 3.0721210688105933) internal successors, (12992), 4229 states have internal predecessors, (12992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 12992 transitions. [2021-10-13 17:53:05,636 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 12992 transitions. Word has length 38 [2021-10-13 17:53:05,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:05,637 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 12992 transitions. [2021-10-13 17:53:05,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:05,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 12992 transitions. [2021-10-13 17:53:05,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:05,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:05,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:05,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 17:53:05,649 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -718039093, now seen corresponding path program 15 times [2021-10-13 17:53:05,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:05,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678833133] [2021-10-13 17:53:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:05,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:05,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:05,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678833133] [2021-10-13 17:53:05,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678833133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:05,769 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:05,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:05,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658475406] [2021-10-13 17:53:05,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:05,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:05,771 INFO L87 Difference]: Start difference. First operand 4230 states and 12992 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:06,391 INFO L93 Difference]: Finished difference Result 5750 states and 17160 transitions. [2021-10-13 17:53:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 17:53:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:06,406 INFO L225 Difference]: With dead ends: 5750 [2021-10-13 17:53:06,406 INFO L226 Difference]: Without dead ends: 5736 [2021-10-13 17:53:06,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 207.4ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:53:06,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-10-13 17:53:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4364. [2021-10-13 17:53:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4364 states, 4363 states have (on average 3.06188402475361) internal successors, (13359), 4363 states have internal predecessors, (13359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 13359 transitions. [2021-10-13 17:53:06,550 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 13359 transitions. Word has length 38 [2021-10-13 17:53:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:06,551 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 13359 transitions. [2021-10-13 17:53:06,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 13359 transitions. [2021-10-13 17:53:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:06,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:06,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:06,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 17:53:06,563 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -210974729, now seen corresponding path program 16 times [2021-10-13 17:53:06,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:06,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616196989] [2021-10-13 17:53:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:06,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:06,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:06,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616196989] [2021-10-13 17:53:06,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616196989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:06,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:06,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:06,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60645774] [2021-10-13 17:53:06,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:06,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:06,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:06,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:06,661 INFO L87 Difference]: Start difference. First operand 4364 states and 13359 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:07,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:07,249 INFO L93 Difference]: Finished difference Result 6542 states and 19753 transitions. [2021-10-13 17:53:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:53:07,250 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:07,269 INFO L225 Difference]: With dead ends: 6542 [2021-10-13 17:53:07,269 INFO L226 Difference]: Without dead ends: 6530 [2021-10-13 17:53:07,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 166.3ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:53:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2021-10-13 17:53:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 4458. [2021-10-13 17:53:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4458 states, 4457 states have (on average 3.070226609827238) internal successors, (13684), 4457 states have internal predecessors, (13684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:07,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 13684 transitions. [2021-10-13 17:53:07,422 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 13684 transitions. Word has length 38 [2021-10-13 17:53:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:07,422 INFO L470 AbstractCegarLoop]: Abstraction has 4458 states and 13684 transitions. [2021-10-13 17:53:07,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:07,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 13684 transitions. [2021-10-13 17:53:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:07,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:07,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:07,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-13 17:53:07,434 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:07,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:07,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1281788565, now seen corresponding path program 17 times [2021-10-13 17:53:07,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:07,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981294690] [2021-10-13 17:53:07,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:07,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:07,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:07,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:07,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981294690] [2021-10-13 17:53:07,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981294690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:07,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:07,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:07,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739506215] [2021-10-13 17:53:07,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:07,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:07,551 INFO L87 Difference]: Start difference. First operand 4458 states and 13684 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:08,373 INFO L93 Difference]: Finished difference Result 6910 states and 20708 transitions. [2021-10-13 17:53:08,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:08,389 INFO L225 Difference]: With dead ends: 6910 [2021-10-13 17:53:08,389 INFO L226 Difference]: Without dead ends: 6894 [2021-10-13 17:53:08,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 285.6ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:08,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6894 states. [2021-10-13 17:53:08,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6894 to 4462. [2021-10-13 17:53:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4462 states, 4461 states have (on average 3.070611970410222) internal successors, (13698), 4461 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:08,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 13698 transitions. [2021-10-13 17:53:08,517 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 13698 transitions. Word has length 38 [2021-10-13 17:53:08,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:08,518 INFO L470 AbstractCegarLoop]: Abstraction has 4462 states and 13698 transitions. [2021-10-13 17:53:08,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 13698 transitions. [2021-10-13 17:53:08,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:08,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:08,526 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:08,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-13 17:53:08,527 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:08,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:08,528 INFO L82 PathProgramCache]: Analyzing trace with hash -810556433, now seen corresponding path program 18 times [2021-10-13 17:53:08,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:08,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988781555] [2021-10-13 17:53:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:08,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:08,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:08,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988781555] [2021-10-13 17:53:08,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988781555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:08,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:08,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:08,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313418522] [2021-10-13 17:53:08,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:08,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:08,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:08,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:08,658 INFO L87 Difference]: Start difference. First operand 4462 states and 13698 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:09,597 INFO L93 Difference]: Finished difference Result 6368 states and 18888 transitions. [2021-10-13 17:53:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 17:53:09,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:09,611 INFO L225 Difference]: With dead ends: 6368 [2021-10-13 17:53:09,611 INFO L226 Difference]: Without dead ends: 6176 [2021-10-13 17:53:09,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 307.8ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-10-13 17:53:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 4614. [2021-10-13 17:53:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 4613 states have (on average 3.0585302406243224) internal successors, (14109), 4613 states have internal predecessors, (14109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:09,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 14109 transitions. [2021-10-13 17:53:09,740 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 14109 transitions. Word has length 38 [2021-10-13 17:53:09,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:09,741 INFO L470 AbstractCegarLoop]: Abstraction has 4614 states and 14109 transitions. [2021-10-13 17:53:09,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 14109 transitions. [2021-10-13 17:53:09,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:09,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:09,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:09,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-13 17:53:09,754 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1790948853, now seen corresponding path program 19 times [2021-10-13 17:53:09,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:09,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143004005] [2021-10-13 17:53:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:09,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:09,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:09,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143004005] [2021-10-13 17:53:09,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143004005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:09,868 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:09,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:09,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294062731] [2021-10-13 17:53:09,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:09,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:09,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:09,870 INFO L87 Difference]: Start difference. First operand 4614 states and 14109 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:10,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:10,618 INFO L93 Difference]: Finished difference Result 6814 states and 20420 transitions. [2021-10-13 17:53:10,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:53:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:10,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:10,633 INFO L225 Difference]: With dead ends: 6814 [2021-10-13 17:53:10,633 INFO L226 Difference]: Without dead ends: 6640 [2021-10-13 17:53:10,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 246.6ms TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:53:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2021-10-13 17:53:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 4690. [2021-10-13 17:53:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 3.0637662614629986) internal successors, (14366), 4689 states have internal predecessors, (14366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 14366 transitions. [2021-10-13 17:53:10,749 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 14366 transitions. Word has length 38 [2021-10-13 17:53:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:10,749 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 14366 transitions. [2021-10-13 17:53:10,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 14366 transitions. [2021-10-13 17:53:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:10,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:10,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:10,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-13 17:53:10,760 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:10,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1116561643, now seen corresponding path program 20 times [2021-10-13 17:53:10,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:10,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673872432] [2021-10-13 17:53:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:10,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:10,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:10,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673872432] [2021-10-13 17:53:10,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673872432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:10,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:10,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:10,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631868464] [2021-10-13 17:53:10,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:10,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:10,875 INFO L87 Difference]: Start difference. First operand 4690 states and 14366 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:11,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:11,911 INFO L93 Difference]: Finished difference Result 6826 states and 20153 transitions. [2021-10-13 17:53:11,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-13 17:53:11,912 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:11,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:11,925 INFO L225 Difference]: With dead ends: 6826 [2021-10-13 17:53:11,925 INFO L226 Difference]: Without dead ends: 6606 [2021-10-13 17:53:11,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 370.4ms TimeCoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 17:53:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-10-13 17:53:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 4690. [2021-10-13 17:53:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4690 states, 4689 states have (on average 3.0629132011089784) internal successors, (14362), 4689 states have internal predecessors, (14362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 14362 transitions. [2021-10-13 17:53:12,041 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 14362 transitions. Word has length 38 [2021-10-13 17:53:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:12,041 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 14362 transitions. [2021-10-13 17:53:12,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 14362 transitions. [2021-10-13 17:53:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:12,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:12,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:12,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-13 17:53:12,051 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:12,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1168689487, now seen corresponding path program 21 times [2021-10-13 17:53:12,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:12,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408455760] [2021-10-13 17:53:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:12,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:12,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:12,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408455760] [2021-10-13 17:53:12,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408455760] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:12,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:12,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:53:12,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209854913] [2021-10-13 17:53:12,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:53:12,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:53:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:53:12,189 INFO L87 Difference]: Start difference. First operand 4690 states and 14362 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:12,654 INFO L93 Difference]: Finished difference Result 6932 states and 20770 transitions. [2021-10-13 17:53:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:53:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:12,674 INFO L225 Difference]: With dead ends: 6932 [2021-10-13 17:53:12,675 INFO L226 Difference]: Without dead ends: 6924 [2021-10-13 17:53:12,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 167.8ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:53:12,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2021-10-13 17:53:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 4712. [2021-10-13 17:53:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4711 states have (on average 3.061982593929102) internal successors, (14425), 4711 states have internal predecessors, (14425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:12,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 14425 transitions. [2021-10-13 17:53:12,812 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 14425 transitions. Word has length 38 [2021-10-13 17:53:12,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:12,813 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 14425 transitions. [2021-10-13 17:53:12,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:12,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 14425 transitions. [2021-10-13 17:53:12,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:12,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:12,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:12,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 17:53:12,827 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:12,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:12,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1565116113, now seen corresponding path program 22 times [2021-10-13 17:53:12,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:12,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368420534] [2021-10-13 17:53:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:12,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:12,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:12,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368420534] [2021-10-13 17:53:12,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368420534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:12,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:12,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:12,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149394928] [2021-10-13 17:53:12,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:12,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:12,958 INFO L87 Difference]: Start difference. First operand 4712 states and 14425 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:13,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:13,541 INFO L93 Difference]: Finished difference Result 7086 states and 21111 transitions. [2021-10-13 17:53:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:13,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:13,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:13,555 INFO L225 Difference]: With dead ends: 7086 [2021-10-13 17:53:13,555 INFO L226 Difference]: Without dead ends: 6916 [2021-10-13 17:53:13,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:53:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-10-13 17:53:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4692. [2021-10-13 17:53:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4691 states have (on average 3.062673204007674) internal successors, (14367), 4691 states have internal predecessors, (14367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:13,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 14367 transitions. [2021-10-13 17:53:13,643 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 14367 transitions. Word has length 38 [2021-10-13 17:53:13,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:13,643 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 14367 transitions. [2021-10-13 17:53:13,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:13,643 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 14367 transitions. [2021-10-13 17:53:13,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:13,650 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:13,650 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:13,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 17:53:13,651 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:13,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:13,651 INFO L82 PathProgramCache]: Analyzing trace with hash -599856517, now seen corresponding path program 23 times [2021-10-13 17:53:13,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:13,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948146267] [2021-10-13 17:53:13,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:13,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:13,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:13,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948146267] [2021-10-13 17:53:13,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948146267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:13,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:13,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:13,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612223526] [2021-10-13 17:53:13,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:13,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:13,744 INFO L87 Difference]: Start difference. First operand 4692 states and 14367 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:14,358 INFO L93 Difference]: Finished difference Result 6870 states and 20329 transitions. [2021-10-13 17:53:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:14,372 INFO L225 Difference]: With dead ends: 6870 [2021-10-13 17:53:14,372 INFO L226 Difference]: Without dead ends: 6854 [2021-10-13 17:53:14,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 175.4ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:53:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2021-10-13 17:53:14,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 4674. [2021-10-13 17:53:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 3.0584207147442757) internal successors, (14292), 4673 states have internal predecessors, (14292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 14292 transitions. [2021-10-13 17:53:14,495 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 14292 transitions. Word has length 38 [2021-10-13 17:53:14,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:14,496 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 14292 transitions. [2021-10-13 17:53:14,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:14,496 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 14292 transitions. [2021-10-13 17:53:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:14,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:14,504 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:14,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 17:53:14,505 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1670670353, now seen corresponding path program 24 times [2021-10-13 17:53:14,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:14,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526789510] [2021-10-13 17:53:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:14,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:14,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:14,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526789510] [2021-10-13 17:53:14,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526789510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:14,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:14,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:14,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256293638] [2021-10-13 17:53:14,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:14,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:14,623 INFO L87 Difference]: Start difference. First operand 4674 states and 14292 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:15,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:15,455 INFO L93 Difference]: Finished difference Result 7116 states and 20990 transitions. [2021-10-13 17:53:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 17:53:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:15,480 INFO L225 Difference]: With dead ends: 7116 [2021-10-13 17:53:15,480 INFO L226 Difference]: Without dead ends: 7106 [2021-10-13 17:53:15,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 275.9ms TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:53:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2021-10-13 17:53:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 4672. [2021-10-13 17:53:15,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4672 states, 4671 states have (on average 3.0560907728537785) internal successors, (14275), 4671 states have internal predecessors, (14275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 14275 transitions. [2021-10-13 17:53:15,635 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 14275 transitions. Word has length 38 [2021-10-13 17:53:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:15,635 INFO L470 AbstractCegarLoop]: Abstraction has 4672 states and 14275 transitions. [2021-10-13 17:53:15,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 14275 transitions. [2021-10-13 17:53:15,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:15,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:15,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:15,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 17:53:15,646 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1494584405, now seen corresponding path program 25 times [2021-10-13 17:53:15,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:15,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85033675] [2021-10-13 17:53:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:15,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:15,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:15,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85033675] [2021-10-13 17:53:15,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85033675] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:15,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:15,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:15,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840481219] [2021-10-13 17:53:15,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:15,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:15,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:15,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:15,783 INFO L87 Difference]: Start difference. First operand 4672 states and 14275 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:16,555 INFO L93 Difference]: Finished difference Result 6986 states and 20553 transitions. [2021-10-13 17:53:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:16,555 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:16,568 INFO L225 Difference]: With dead ends: 6986 [2021-10-13 17:53:16,568 INFO L226 Difference]: Without dead ends: 6814 [2021-10-13 17:53:16,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 241.3ms TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:53:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2021-10-13 17:53:16,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 4620. [2021-10-13 17:53:16,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4619 states have (on average 3.05174280147218) internal successors, (14096), 4619 states have internal predecessors, (14096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:16,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 14096 transitions. [2021-10-13 17:53:16,659 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 14096 transitions. Word has length 38 [2021-10-13 17:53:16,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:16,660 INFO L470 AbstractCegarLoop]: Abstraction has 4620 states and 14096 transitions. [2021-10-13 17:53:16,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:16,660 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 14096 transitions. [2021-10-13 17:53:16,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:16,667 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:16,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:16,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-13 17:53:16,668 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash 820197195, now seen corresponding path program 26 times [2021-10-13 17:53:16,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:16,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520706890] [2021-10-13 17:53:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:16,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:16,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:16,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520706890] [2021-10-13 17:53:16,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520706890] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:16,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:16,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:16,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672544049] [2021-10-13 17:53:16,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:16,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:16,778 INFO L87 Difference]: Start difference. First operand 4620 states and 14096 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:17,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:17,745 INFO L93 Difference]: Finished difference Result 6984 states and 20370 transitions. [2021-10-13 17:53:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:53:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:17,759 INFO L225 Difference]: With dead ends: 6984 [2021-10-13 17:53:17,759 INFO L226 Difference]: Without dead ends: 6810 [2021-10-13 17:53:17,760 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 343.4ms TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 17:53:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2021-10-13 17:53:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 4334. [2021-10-13 17:53:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.033233325640434) internal successors, (13143), 4333 states have internal predecessors, (13143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 13143 transitions. [2021-10-13 17:53:17,846 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 13143 transitions. Word has length 38 [2021-10-13 17:53:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:17,846 INFO L470 AbstractCegarLoop]: Abstraction has 4334 states and 13143 transitions. [2021-10-13 17:53:17,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:17,846 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 13143 transitions. [2021-10-13 17:53:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:17,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:17,853 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:17,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-13 17:53:17,853 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:17,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1924801149, now seen corresponding path program 27 times [2021-10-13 17:53:17,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:17,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035260608] [2021-10-13 17:53:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:17,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:18,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:18,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035260608] [2021-10-13 17:53:18,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035260608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:18,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:18,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:18,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893339218] [2021-10-13 17:53:18,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:18,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:18,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:18,003 INFO L87 Difference]: Start difference. First operand 4334 states and 13143 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:18,582 INFO L93 Difference]: Finished difference Result 7210 states and 21090 transitions. [2021-10-13 17:53:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:53:18,582 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:18,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:18,596 INFO L225 Difference]: With dead ends: 7210 [2021-10-13 17:53:18,596 INFO L226 Difference]: Without dead ends: 7202 [2021-10-13 17:53:18,596 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 191.5ms TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:53:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2021-10-13 17:53:18,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 4448. [2021-10-13 17:53:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4447 states have (on average 3.026759613222397) internal successors, (13460), 4447 states have internal predecessors, (13460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 13460 transitions. [2021-10-13 17:53:18,685 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 13460 transitions. Word has length 38 [2021-10-13 17:53:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:18,685 INFO L470 AbstractCegarLoop]: Abstraction has 4448 states and 13460 transitions. [2021-10-13 17:53:18,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 13460 transitions. [2021-10-13 17:53:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:18,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:18,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:18,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-13 17:53:18,692 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:18,693 INFO L82 PathProgramCache]: Analyzing trace with hash -325855215, now seen corresponding path program 28 times [2021-10-13 17:53:18,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:18,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082745911] [2021-10-13 17:53:18,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:18,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:18,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:18,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082745911] [2021-10-13 17:53:18,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082745911] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:18,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:18,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:18,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433723795] [2021-10-13 17:53:18,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:18,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:18,820 INFO L87 Difference]: Start difference. First operand 4448 states and 13460 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:19,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:19,712 INFO L93 Difference]: Finished difference Result 7376 states and 21409 transitions. [2021-10-13 17:53:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:53:19,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:19,726 INFO L225 Difference]: With dead ends: 7376 [2021-10-13 17:53:19,726 INFO L226 Difference]: Without dead ends: 7124 [2021-10-13 17:53:19,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 287.9ms TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 17:53:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-10-13 17:53:19,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 4544. [2021-10-13 17:53:19,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4544 states, 4543 states have (on average 3.0250935505172794) internal successors, (13743), 4543 states have internal predecessors, (13743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:19,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 13743 transitions. [2021-10-13 17:53:19,816 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 13743 transitions. Word has length 38 [2021-10-13 17:53:19,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:19,816 INFO L470 AbstractCegarLoop]: Abstraction has 4544 states and 13743 transitions. [2021-10-13 17:53:19,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 13743 transitions. [2021-10-13 17:53:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:19,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:19,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:19,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-13 17:53:19,825 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1562169343, now seen corresponding path program 29 times [2021-10-13 17:53:19,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:19,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749043886] [2021-10-13 17:53:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:19,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:19,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:19,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749043886] [2021-10-13 17:53:19,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749043886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:19,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:19,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:19,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152337247] [2021-10-13 17:53:19,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:19,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:19,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:19,939 INFO L87 Difference]: Start difference. First operand 4544 states and 13743 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:20,645 INFO L93 Difference]: Finished difference Result 7126 states and 21112 transitions. [2021-10-13 17:53:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 17:53:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:20,666 INFO L225 Difference]: With dead ends: 7126 [2021-10-13 17:53:20,666 INFO L226 Difference]: Without dead ends: 7118 [2021-10-13 17:53:20,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 246.6ms TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:53:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2021-10-13 17:53:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 4574. [2021-10-13 17:53:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 3.028427727968511) internal successors, (13849), 4573 states have internal predecessors, (13849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 13849 transitions. [2021-10-13 17:53:20,787 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 13849 transitions. Word has length 38 [2021-10-13 17:53:20,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:20,787 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 13849 transitions. [2021-10-13 17:53:20,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 13849 transitions. [2021-10-13 17:53:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:20,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:20,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:20,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-13 17:53:20,796 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:20,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash -272517057, now seen corresponding path program 30 times [2021-10-13 17:53:20,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:20,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519226477] [2021-10-13 17:53:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:20,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:20,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:20,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519226477] [2021-10-13 17:53:20,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519226477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:20,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:20,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:20,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924037818] [2021-10-13 17:53:20,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:20,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:20,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:20,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:20,895 INFO L87 Difference]: Start difference. First operand 4574 states and 13849 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:21,761 INFO L93 Difference]: Finished difference Result 7482 states and 22080 transitions. [2021-10-13 17:53:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:53:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:21,775 INFO L225 Difference]: With dead ends: 7482 [2021-10-13 17:53:21,775 INFO L226 Difference]: Without dead ends: 7474 [2021-10-13 17:53:21,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 338.0ms TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:53:21,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-10-13 17:53:21,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 4572. [2021-10-13 17:53:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 4571 states have (on average 3.0286589367753227) internal successors, (13844), 4571 states have internal predecessors, (13844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:21,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 13844 transitions. [2021-10-13 17:53:21,864 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 13844 transitions. Word has length 38 [2021-10-13 17:53:21,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:21,864 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 13844 transitions. [2021-10-13 17:53:21,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:21,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 13844 transitions. [2021-10-13 17:53:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:21,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:21,871 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:21,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-13 17:53:21,871 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:21,872 INFO L82 PathProgramCache]: Analyzing trace with hash -934523677, now seen corresponding path program 31 times [2021-10-13 17:53:21,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:21,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007109425] [2021-10-13 17:53:21,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:21,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:22,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:22,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007109425] [2021-10-13 17:53:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007109425] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:22,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:22,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:22,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856350931] [2021-10-13 17:53:22,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:22,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:22,025 INFO L87 Difference]: Start difference. First operand 4572 states and 13844 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:22,876 INFO L93 Difference]: Finished difference Result 7142 states and 21136 transitions. [2021-10-13 17:53:22,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 17:53:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:22,896 INFO L225 Difference]: With dead ends: 7142 [2021-10-13 17:53:22,896 INFO L226 Difference]: Without dead ends: 7100 [2021-10-13 17:53:22,897 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 269.3ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:22,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-13 17:53:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 4560. [2021-10-13 17:53:23,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4560 states, 4559 states have (on average 3.026321561745997) internal successors, (13797), 4559 states have internal predecessors, (13797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:23,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 13797 transitions. [2021-10-13 17:53:23,016 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 13797 transitions. Word has length 38 [2021-10-13 17:53:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:23,017 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 13797 transitions. [2021-10-13 17:53:23,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 13797 transitions. [2021-10-13 17:53:23,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:23,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:23,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:23,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-13 17:53:23,024 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:23,025 INFO L82 PathProgramCache]: Analyzing trace with hash -518553713, now seen corresponding path program 32 times [2021-10-13 17:53:23,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:23,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396807934] [2021-10-13 17:53:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:23,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:23,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:23,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396807934] [2021-10-13 17:53:23,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396807934] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:23,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:23,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:23,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235981862] [2021-10-13 17:53:23,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:23,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:23,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:23,147 INFO L87 Difference]: Start difference. First operand 4560 states and 13797 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:24,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:24,301 INFO L93 Difference]: Finished difference Result 7374 states and 21803 transitions. [2021-10-13 17:53:24,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:53:24,301 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:24,317 INFO L225 Difference]: With dead ends: 7374 [2021-10-13 17:53:24,317 INFO L226 Difference]: Without dead ends: 7352 [2021-10-13 17:53:24,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 384.4ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 17:53:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2021-10-13 17:53:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 4552. [2021-10-13 17:53:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4552 states, 4551 states have (on average 3.028125686662272) internal successors, (13781), 4551 states have internal predecessors, (13781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 13781 transitions. [2021-10-13 17:53:24,412 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 13781 transitions. Word has length 38 [2021-10-13 17:53:24,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:24,412 INFO L470 AbstractCegarLoop]: Abstraction has 4552 states and 13781 transitions. [2021-10-13 17:53:24,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:24,413 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 13781 transitions. [2021-10-13 17:53:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:24,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:24,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:24,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-13 17:53:24,420 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:24,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:24,421 INFO L82 PathProgramCache]: Analyzing trace with hash 694436029, now seen corresponding path program 33 times [2021-10-13 17:53:24,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:24,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091880692] [2021-10-13 17:53:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:24,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:24,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:24,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:24,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091880692] [2021-10-13 17:53:24,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091880692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:24,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:24,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:24,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948741860] [2021-10-13 17:53:24,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:24,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:24,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:24,515 INFO L87 Difference]: Start difference. First operand 4552 states and 13781 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:25,059 INFO L93 Difference]: Finished difference Result 7300 states and 21296 transitions. [2021-10-13 17:53:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:53:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:25,080 INFO L225 Difference]: With dead ends: 7300 [2021-10-13 17:53:25,080 INFO L226 Difference]: Without dead ends: 7258 [2021-10-13 17:53:25,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:53:25,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2021-10-13 17:53:25,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 4610. [2021-10-13 17:53:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 3.0136689086569755) internal successors, (13890), 4609 states have internal predecessors, (13890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 13890 transitions. [2021-10-13 17:53:25,199 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 13890 transitions. Word has length 38 [2021-10-13 17:53:25,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:25,199 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 13890 transitions. [2021-10-13 17:53:25,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:25,199 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 13890 transitions. [2021-10-13 17:53:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:25,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:25,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:25,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-13 17:53:25,206 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1140250371, now seen corresponding path program 34 times [2021-10-13 17:53:25,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:25,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200469335] [2021-10-13 17:53:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:25,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:25,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:25,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200469335] [2021-10-13 17:53:25,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200469335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:25,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:25,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:25,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434606575] [2021-10-13 17:53:25,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:25,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:25,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:25,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:25,307 INFO L87 Difference]: Start difference. First operand 4610 states and 13890 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:26,094 INFO L93 Difference]: Finished difference Result 7432 states and 21606 transitions. [2021-10-13 17:53:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:26,094 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:26,115 INFO L225 Difference]: With dead ends: 7432 [2021-10-13 17:53:26,116 INFO L226 Difference]: Without dead ends: 7400 [2021-10-13 17:53:26,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:26,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2021-10-13 17:53:26,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 4590. [2021-10-13 17:53:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 4589 states have (on average 3.0137284811505776) internal successors, (13830), 4589 states have internal predecessors, (13830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:26,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 13830 transitions. [2021-10-13 17:53:26,247 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 13830 transitions. Word has length 38 [2021-10-13 17:53:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:26,248 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 13830 transitions. [2021-10-13 17:53:26,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:26,248 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 13830 transitions. [2021-10-13 17:53:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:26,257 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:26,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:26,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-13 17:53:26,258 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:26,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:26,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2134563991, now seen corresponding path program 35 times [2021-10-13 17:53:26,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:26,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124862446] [2021-10-13 17:53:26,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:26,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:26,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:26,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124862446] [2021-10-13 17:53:26,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124862446] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:26,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:26,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:26,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518271960] [2021-10-13 17:53:26,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:26,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:26,388 INFO L87 Difference]: Start difference. First operand 4590 states and 13830 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:27,030 INFO L93 Difference]: Finished difference Result 6442 states and 18800 transitions. [2021-10-13 17:53:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:27,030 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:27,042 INFO L225 Difference]: With dead ends: 6442 [2021-10-13 17:53:27,042 INFO L226 Difference]: Without dead ends: 6388 [2021-10-13 17:53:27,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 219.7ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:53:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-10-13 17:53:27,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 4610. [2021-10-13 17:53:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4610 states, 4609 states have (on average 3.00846170535908) internal successors, (13866), 4609 states have internal predecessors, (13866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 13866 transitions. [2021-10-13 17:53:27,124 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 13866 transitions. Word has length 38 [2021-10-13 17:53:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:27,124 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 13866 transitions. [2021-10-13 17:53:27,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 13866 transitions. [2021-10-13 17:53:27,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:27,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:27,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:27,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-13 17:53:27,131 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:27,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:27,132 INFO L82 PathProgramCache]: Analyzing trace with hash -839458735, now seen corresponding path program 36 times [2021-10-13 17:53:27,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:27,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281512489] [2021-10-13 17:53:27,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:27,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:27,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:27,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281512489] [2021-10-13 17:53:27,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281512489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:27,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:27,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:27,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683445683] [2021-10-13 17:53:27,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:27,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:27,269 INFO L87 Difference]: Start difference. First operand 4610 states and 13866 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:28,175 INFO L93 Difference]: Finished difference Result 7128 states and 20615 transitions. [2021-10-13 17:53:28,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:53:28,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:28,192 INFO L225 Difference]: With dead ends: 7128 [2021-10-13 17:53:28,193 INFO L226 Difference]: Without dead ends: 6746 [2021-10-13 17:53:28,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 266.0ms TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:53:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-10-13 17:53:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 4570. [2021-10-13 17:53:28,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 4569 states have (on average 2.996935872182097) internal successors, (13693), 4569 states have internal predecessors, (13693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 13693 transitions. [2021-10-13 17:53:28,321 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 13693 transitions. Word has length 38 [2021-10-13 17:53:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:28,322 INFO L470 AbstractCegarLoop]: Abstraction has 4570 states and 13693 transitions. [2021-10-13 17:53:28,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 13693 transitions. [2021-10-13 17:53:28,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:28,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:28,332 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:28,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-13 17:53:28,332 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:28,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:28,333 INFO L82 PathProgramCache]: Analyzing trace with hash -423488771, now seen corresponding path program 37 times [2021-10-13 17:53:28,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:28,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809958579] [2021-10-13 17:53:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:28,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:28,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:28,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809958579] [2021-10-13 17:53:28,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809958579] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:28,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:28,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:28,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086105128] [2021-10-13 17:53:28,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:28,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:28,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:28,482 INFO L87 Difference]: Start difference. First operand 4570 states and 13693 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:29,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:29,443 INFO L93 Difference]: Finished difference Result 6686 states and 19343 transitions. [2021-10-13 17:53:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:53:29,444 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:29,458 INFO L225 Difference]: With dead ends: 6686 [2021-10-13 17:53:29,458 INFO L226 Difference]: Without dead ends: 6606 [2021-10-13 17:53:29,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 335.1ms TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 17:53:29,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-10-13 17:53:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 4524. [2021-10-13 17:53:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 4523 states have (on average 2.998673446827327) internal successors, (13563), 4523 states have internal predecessors, (13563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 13563 transitions. [2021-10-13 17:53:29,545 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 13563 transitions. Word has length 38 [2021-10-13 17:53:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:29,546 INFO L470 AbstractCegarLoop]: Abstraction has 4524 states and 13563 transitions. [2021-10-13 17:53:29,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:29,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 13563 transitions. [2021-10-13 17:53:29,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:29,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:29,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:29,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-13 17:53:29,553 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:29,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:29,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1171765735, now seen corresponding path program 38 times [2021-10-13 17:53:29,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:29,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423531905] [2021-10-13 17:53:29,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:29,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:29,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:29,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423531905] [2021-10-13 17:53:29,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423531905] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:29,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:29,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:29,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786681706] [2021-10-13 17:53:29,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:29,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:29,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:29,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:29,680 INFO L87 Difference]: Start difference. First operand 4524 states and 13563 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:30,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:30,570 INFO L93 Difference]: Finished difference Result 6042 states and 17591 transitions. [2021-10-13 17:53:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:53:30,571 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:30,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:30,587 INFO L225 Difference]: With dead ends: 6042 [2021-10-13 17:53:30,587 INFO L226 Difference]: Without dead ends: 5900 [2021-10-13 17:53:30,588 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 270.2ms TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2021-10-13 17:53:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2021-10-13 17:53:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 4500. [2021-10-13 17:53:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4499 states have (on average 2.9997777283840854) internal successors, (13496), 4499 states have internal predecessors, (13496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 13496 transitions. [2021-10-13 17:53:30,683 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 13496 transitions. Word has length 38 [2021-10-13 17:53:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:30,683 INFO L470 AbstractCegarLoop]: Abstraction has 4500 states and 13496 transitions. [2021-10-13 17:53:30,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 13496 transitions. [2021-10-13 17:53:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:30,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:30,692 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:30,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-13 17:53:30,692 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:30,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:30,693 INFO L82 PathProgramCache]: Analyzing trace with hash -821669551, now seen corresponding path program 39 times [2021-10-13 17:53:30,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:30,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598939918] [2021-10-13 17:53:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:30,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:30,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:30,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:30,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598939918] [2021-10-13 17:53:30,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598939918] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:30,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:30,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:30,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66923171] [2021-10-13 17:53:30,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:30,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:30,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:30,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:30,781 INFO L87 Difference]: Start difference. First operand 4500 states and 13496 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:31,328 INFO L93 Difference]: Finished difference Result 6794 states and 19908 transitions. [2021-10-13 17:53:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:53:31,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:31,341 INFO L225 Difference]: With dead ends: 6794 [2021-10-13 17:53:31,342 INFO L226 Difference]: Without dead ends: 6620 [2021-10-13 17:53:31,343 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 158.0ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:53:31,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2021-10-13 17:53:31,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 4646. [2021-10-13 17:53:31,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4646 states, 4645 states have (on average 2.994617868675996) internal successors, (13910), 4645 states have internal predecessors, (13910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 13910 transitions. [2021-10-13 17:53:31,437 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 13910 transitions. Word has length 38 [2021-10-13 17:53:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:31,437 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 13910 transitions. [2021-10-13 17:53:31,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 13910 transitions. [2021-10-13 17:53:31,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:31,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:31,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:31,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-13 17:53:31,445 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:31,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:31,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1592406527, now seen corresponding path program 40 times [2021-10-13 17:53:31,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:31,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059834251] [2021-10-13 17:53:31,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:31,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:31,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:31,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:31,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059834251] [2021-10-13 17:53:31,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059834251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:31,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:31,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:31,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562749684] [2021-10-13 17:53:31,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:31,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:31,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:31,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:31,544 INFO L87 Difference]: Start difference. First operand 4646 states and 13910 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:32,274 INFO L93 Difference]: Finished difference Result 7428 states and 21632 transitions. [2021-10-13 17:53:32,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:32,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:32,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:32,288 INFO L225 Difference]: With dead ends: 7428 [2021-10-13 17:53:32,289 INFO L226 Difference]: Without dead ends: 7412 [2021-10-13 17:53:32,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 284.3ms TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:53:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2021-10-13 17:53:32,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 4732. [2021-10-13 17:53:32,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 2.996618051151976) internal successors, (14177), 4731 states have internal predecessors, (14177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 14177 transitions. [2021-10-13 17:53:32,383 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 14177 transitions. Word has length 38 [2021-10-13 17:53:32,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:32,383 INFO L470 AbstractCegarLoop]: Abstraction has 4732 states and 14177 transitions. [2021-10-13 17:53:32,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 14177 transitions. [2021-10-13 17:53:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:32,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:32,391 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:32,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-13 17:53:32,391 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:32,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:32,392 INFO L82 PathProgramCache]: Analyzing trace with hash -242279873, now seen corresponding path program 41 times [2021-10-13 17:53:32,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:32,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291656870] [2021-10-13 17:53:32,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:32,392 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:32,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:32,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:32,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291656870] [2021-10-13 17:53:32,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291656870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:32,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:32,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:32,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675169313] [2021-10-13 17:53:32,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:32,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:32,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:32,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:32,495 INFO L87 Difference]: Start difference. First operand 4732 states and 14177 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:33,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:33,497 INFO L93 Difference]: Finished difference Result 7894 states and 22808 transitions. [2021-10-13 17:53:33,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 17:53:33,497 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:33,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:33,512 INFO L225 Difference]: With dead ends: 7894 [2021-10-13 17:53:33,512 INFO L226 Difference]: Without dead ends: 7862 [2021-10-13 17:53:33,513 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 404.6ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 17:53:33,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2021-10-13 17:53:33,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 4712. [2021-10-13 17:53:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4712 states, 4711 states have (on average 2.996603693483337) internal successors, (14117), 4711 states have internal predecessors, (14117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 14117 transitions. [2021-10-13 17:53:33,607 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 14117 transitions. Word has length 38 [2021-10-13 17:53:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:33,612 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 14117 transitions. [2021-10-13 17:53:33,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 14117 transitions. [2021-10-13 17:53:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:33,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:33,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:33,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-13 17:53:33,623 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:33,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:33,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1236593493, now seen corresponding path program 42 times [2021-10-13 17:53:33,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:33,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742889329] [2021-10-13 17:53:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:33,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:33,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:33,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742889329] [2021-10-13 17:53:33,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742889329] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:33,724 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:33,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:33,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702898894] [2021-10-13 17:53:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:33,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:33,726 INFO L87 Difference]: Start difference. First operand 4712 states and 14117 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:34,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:34,587 INFO L93 Difference]: Finished difference Result 6938 states and 20173 transitions. [2021-10-13 17:53:34,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 17:53:34,587 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:34,610 INFO L225 Difference]: With dead ends: 6938 [2021-10-13 17:53:34,610 INFO L226 Difference]: Without dead ends: 6886 [2021-10-13 17:53:34,611 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 358.5ms TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:53:34,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2021-10-13 17:53:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 4652. [2021-10-13 17:53:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4652 states, 4651 states have (on average 2.9974199096968395) internal successors, (13941), 4651 states have internal predecessors, (13941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 13941 transitions. [2021-10-13 17:53:34,693 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 13941 transitions. Word has length 38 [2021-10-13 17:53:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:34,694 INFO L470 AbstractCegarLoop]: Abstraction has 4652 states and 13941 transitions. [2021-10-13 17:53:34,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 13941 transitions. [2021-10-13 17:53:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:34,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:34,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:34,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-13 17:53:34,702 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:34,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:34,702 INFO L82 PathProgramCache]: Analyzing trace with hash -315494859, now seen corresponding path program 43 times [2021-10-13 17:53:34,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:34,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638589898] [2021-10-13 17:53:34,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:34,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:34,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:34,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638589898] [2021-10-13 17:53:34,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638589898] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:34,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:34,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:34,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977691916] [2021-10-13 17:53:34,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:34,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:34,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:34,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:34,805 INFO L87 Difference]: Start difference. First operand 4652 states and 13941 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:35,432 INFO L93 Difference]: Finished difference Result 6444 states and 19056 transitions. [2021-10-13 17:53:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:35,445 INFO L225 Difference]: With dead ends: 6444 [2021-10-13 17:53:35,445 INFO L226 Difference]: Without dead ends: 6420 [2021-10-13 17:53:35,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 226.1ms TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:53:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2021-10-13 17:53:35,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 4656. [2021-10-13 17:53:35,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4656 states, 4655 states have (on average 2.9969924812030073) internal successors, (13951), 4655 states have internal predecessors, (13951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:35,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 13951 transitions. [2021-10-13 17:53:35,530 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 13951 transitions. Word has length 38 [2021-10-13 17:53:35,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:35,531 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 13951 transitions. [2021-10-13 17:53:35,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 13951 transitions. [2021-10-13 17:53:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:35,540 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:35,540 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:35,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-13 17:53:35,540 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:35,541 INFO L82 PathProgramCache]: Analyzing trace with hash -635995399, now seen corresponding path program 44 times [2021-10-13 17:53:35,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:35,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590852103] [2021-10-13 17:53:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:35,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:35,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:35,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:35,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590852103] [2021-10-13 17:53:35,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590852103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:35,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:35,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:53:35,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961884339] [2021-10-13 17:53:35,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:53:35,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:35,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:53:35,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:53:35,652 INFO L87 Difference]: Start difference. First operand 4656 states and 13951 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:36,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:36,602 INFO L93 Difference]: Finished difference Result 7090 states and 20504 transitions. [2021-10-13 17:53:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:53:36,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:36,616 INFO L225 Difference]: With dead ends: 7090 [2021-10-13 17:53:36,616 INFO L226 Difference]: Without dead ends: 7016 [2021-10-13 17:53:36,617 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 364.0ms TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 17:53:36,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2021-10-13 17:53:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 4770. [2021-10-13 17:53:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4770 states, 4769 states have (on average 2.9939190605997066) internal successors, (14278), 4769 states have internal predecessors, (14278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 14278 transitions. [2021-10-13 17:53:36,716 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 14278 transitions. Word has length 38 [2021-10-13 17:53:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:36,716 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 14278 transitions. [2021-10-13 17:53:36,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 14278 transitions. [2021-10-13 17:53:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:36,723 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:36,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:36,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-13 17:53:36,723 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:36,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:36,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1716982443, now seen corresponding path program 45 times [2021-10-13 17:53:36,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:36,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378666385] [2021-10-13 17:53:36,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:36,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:36,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:36,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378666385] [2021-10-13 17:53:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378666385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:36,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:36,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:53:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030149528] [2021-10-13 17:53:36,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:53:36,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:53:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:53:36,801 INFO L87 Difference]: Start difference. First operand 4770 states and 14278 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:37,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:37,212 INFO L93 Difference]: Finished difference Result 6436 states and 18904 transitions. [2021-10-13 17:53:37,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:53:37,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:37,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:37,230 INFO L225 Difference]: With dead ends: 6436 [2021-10-13 17:53:37,230 INFO L226 Difference]: Without dead ends: 6432 [2021-10-13 17:53:37,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 135.4ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:53:37,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2021-10-13 17:53:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 4830. [2021-10-13 17:53:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4830 states, 4829 states have (on average 2.9832263408573203) internal successors, (14406), 4829 states have internal predecessors, (14406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 14406 transitions. [2021-10-13 17:53:37,316 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 14406 transitions. Word has length 38 [2021-10-13 17:53:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:37,317 INFO L470 AbstractCegarLoop]: Abstraction has 4830 states and 14406 transitions. [2021-10-13 17:53:37,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 14406 transitions. [2021-10-13 17:53:37,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:37,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:37,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:37,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-13 17:53:37,324 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:37,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:37,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1692083485, now seen corresponding path program 46 times [2021-10-13 17:53:37,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:37,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197472240] [2021-10-13 17:53:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:37,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:37,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:37,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197472240] [2021-10-13 17:53:37,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197472240] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:37,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:37,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:37,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263697326] [2021-10-13 17:53:37,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:37,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:37,426 INFO L87 Difference]: Start difference. First operand 4830 states and 14406 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:38,296 INFO L93 Difference]: Finished difference Result 7552 states and 21793 transitions. [2021-10-13 17:53:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:53:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:38,311 INFO L225 Difference]: With dead ends: 7552 [2021-10-13 17:53:38,311 INFO L226 Difference]: Without dead ends: 7484 [2021-10-13 17:53:38,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 287.2ms TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 17:53:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7484 states. [2021-10-13 17:53:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7484 to 4878. [2021-10-13 17:53:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4877 states have (on average 2.9766249743694893) internal successors, (14517), 4877 states have internal predecessors, (14517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:38,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 14517 transitions. [2021-10-13 17:53:38,410 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 14517 transitions. Word has length 38 [2021-10-13 17:53:38,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:38,410 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 14517 transitions. [2021-10-13 17:53:38,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:38,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 14517 transitions. [2021-10-13 17:53:38,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:38,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:38,420 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:38,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-13 17:53:38,421 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1276113521, now seen corresponding path program 47 times [2021-10-13 17:53:38,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:38,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399044708] [2021-10-13 17:53:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:38,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:38,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:38,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399044708] [2021-10-13 17:53:38,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399044708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:38,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:38,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:53:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355009184] [2021-10-13 17:53:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:53:38,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:38,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:53:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:53:38,537 INFO L87 Difference]: Start difference. First operand 4878 states and 14517 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:39,666 INFO L93 Difference]: Finished difference Result 7946 states and 22788 transitions. [2021-10-13 17:53:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 17:53:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:39,685 INFO L225 Difference]: With dead ends: 7946 [2021-10-13 17:53:39,685 INFO L226 Difference]: Without dead ends: 7824 [2021-10-13 17:53:39,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 443.6ms TimeCoverageRelationStatistics Valid=430, Invalid=1640, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 17:53:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-10-13 17:53:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 4704. [2021-10-13 17:53:39,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4704 states, 4703 states have (on average 2.984477992770572) internal successors, (14036), 4703 states have internal predecessors, (14036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 14036 transitions. [2021-10-13 17:53:39,803 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 14036 transitions. Word has length 38 [2021-10-13 17:53:39,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:39,804 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 14036 transitions. [2021-10-13 17:53:39,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 14036 transitions. [2021-10-13 17:53:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:39,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:39,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:39,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-13 17:53:39,813 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 615746949, now seen corresponding path program 48 times [2021-10-13 17:53:39,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:39,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583121797] [2021-10-13 17:53:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:39,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:39,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:39,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583121797] [2021-10-13 17:53:39,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583121797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:39,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:39,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:53:39,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049190415] [2021-10-13 17:53:39,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:53:39,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:53:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:53:39,926 INFO L87 Difference]: Start difference. First operand 4704 states and 14036 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:40,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:40,780 INFO L93 Difference]: Finished difference Result 6598 states and 19271 transitions. [2021-10-13 17:53:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:53:40,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:40,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:40,798 INFO L225 Difference]: With dead ends: 6598 [2021-10-13 17:53:40,799 INFO L226 Difference]: Without dead ends: 6526 [2021-10-13 17:53:40,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:53:40,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2021-10-13 17:53:40,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 4694. [2021-10-13 17:53:40,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4694 states, 4693 states have (on average 2.987428084380993) internal successors, (14020), 4693 states have internal predecessors, (14020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:40,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 14020 transitions. [2021-10-13 17:53:40,929 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 14020 transitions. Word has length 38 [2021-10-13 17:53:40,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:40,929 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 14020 transitions. [2021-10-13 17:53:40,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:40,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 14020 transitions. [2021-10-13 17:53:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:40,939 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:40,939 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:40,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-13 17:53:40,939 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:40,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1844068427, now seen corresponding path program 49 times [2021-10-13 17:53:40,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:40,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948775142] [2021-10-13 17:53:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:40,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:41,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:41,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948775142] [2021-10-13 17:53:41,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948775142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:41,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:41,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:53:41,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742473175] [2021-10-13 17:53:41,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:53:41,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:41,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:53:41,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:53:41,028 INFO L87 Difference]: Start difference. First operand 4694 states and 14020 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:41,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:41,464 INFO L93 Difference]: Finished difference Result 6614 states and 19300 transitions. [2021-10-13 17:53:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:53:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:41,477 INFO L225 Difference]: With dead ends: 6614 [2021-10-13 17:53:41,477 INFO L226 Difference]: Without dead ends: 6384 [2021-10-13 17:53:41,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:53:41,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-10-13 17:53:41,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 4918. [2021-10-13 17:53:41,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4918 states, 4917 states have (on average 2.9825096603620094) internal successors, (14665), 4917 states have internal predecessors, (14665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 14665 transitions. [2021-10-13 17:53:41,596 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 14665 transitions. Word has length 38 [2021-10-13 17:53:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:41,596 INFO L470 AbstractCegarLoop]: Abstraction has 4918 states and 14665 transitions. [2021-10-13 17:53:41,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 14665 transitions. [2021-10-13 17:53:41,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:41,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:41,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:41,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-13 17:53:41,605 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:41,605 INFO L82 PathProgramCache]: Analyzing trace with hash -548174967, now seen corresponding path program 50 times [2021-10-13 17:53:41,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:41,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615217363] [2021-10-13 17:53:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:41,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:41,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:41,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615217363] [2021-10-13 17:53:41,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615217363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:41,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:41,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:41,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834275700] [2021-10-13 17:53:41,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:41,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:41,702 INFO L87 Difference]: Start difference. First operand 4918 states and 14665 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:42,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:42,289 INFO L93 Difference]: Finished difference Result 6736 states and 19460 transitions. [2021-10-13 17:53:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:42,290 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:42,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:42,303 INFO L225 Difference]: With dead ends: 6736 [2021-10-13 17:53:42,303 INFO L226 Difference]: Without dead ends: 6700 [2021-10-13 17:53:42,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 207.9ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:53:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-10-13 17:53:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 4980. [2021-10-13 17:53:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4979 states have (on average 2.9785097409118295) internal successors, (14830), 4979 states have internal predecessors, (14830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:42,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 14830 transitions. [2021-10-13 17:53:42,390 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 14830 transitions. Word has length 38 [2021-10-13 17:53:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:42,390 INFO L470 AbstractCegarLoop]: Abstraction has 4980 states and 14830 transitions. [2021-10-13 17:53:42,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:42,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 14830 transitions. [2021-10-13 17:53:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:42,398 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:42,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:42,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-13 17:53:42,399 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:42,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash -41110603, now seen corresponding path program 51 times [2021-10-13 17:53:42,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:42,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210259200] [2021-10-13 17:53:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:42,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:42,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:42,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210259200] [2021-10-13 17:53:42,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210259200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:42,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:42,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:42,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780008127] [2021-10-13 17:53:42,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:42,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:42,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:42,512 INFO L87 Difference]: Start difference. First operand 4980 states and 14830 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:43,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:43,137 INFO L93 Difference]: Finished difference Result 7288 states and 21125 transitions. [2021-10-13 17:53:43,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:53:43,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:43,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:43,151 INFO L225 Difference]: With dead ends: 7288 [2021-10-13 17:53:43,151 INFO L226 Difference]: Without dead ends: 7272 [2021-10-13 17:53:43,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 178.5ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:53:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-10-13 17:53:43,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 5050. [2021-10-13 17:53:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5050 states, 5049 states have (on average 2.982570806100218) internal successors, (15059), 5049 states have internal predecessors, (15059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 15059 transitions. [2021-10-13 17:53:43,242 INFO L78 Accepts]: Start accepts. Automaton has 5050 states and 15059 transitions. Word has length 38 [2021-10-13 17:53:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:43,242 INFO L470 AbstractCegarLoop]: Abstraction has 5050 states and 15059 transitions. [2021-10-13 17:53:43,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5050 states and 15059 transitions. [2021-10-13 17:53:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:43,250 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:43,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:43,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-13 17:53:43,250 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:43,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:43,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1111924439, now seen corresponding path program 52 times [2021-10-13 17:53:43,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:43,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531729534] [2021-10-13 17:53:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:43,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:43,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:43,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531729534] [2021-10-13 17:53:43,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531729534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:43,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:43,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:43,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527260427] [2021-10-13 17:53:43,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:43,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:43,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:43,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:43,344 INFO L87 Difference]: Start difference. First operand 5050 states and 15059 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:44,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:44,120 INFO L93 Difference]: Finished difference Result 7660 states and 22070 transitions. [2021-10-13 17:53:44,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:44,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:44,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:44,135 INFO L225 Difference]: With dead ends: 7660 [2021-10-13 17:53:44,135 INFO L226 Difference]: Without dead ends: 7614 [2021-10-13 17:53:44,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 268.4ms TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:44,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2021-10-13 17:53:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 5018. [2021-10-13 17:53:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5017 states have (on average 2.98564879410006) internal successors, (14979), 5017 states have internal predecessors, (14979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:44,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 14979 transitions. [2021-10-13 17:53:44,235 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 14979 transitions. Word has length 38 [2021-10-13 17:53:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:44,235 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 14979 transitions. [2021-10-13 17:53:44,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:44,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 14979 transitions. [2021-10-13 17:53:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:44,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:44,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:44,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-13 17:53:44,243 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:44,244 INFO L82 PathProgramCache]: Analyzing trace with hash -640692307, now seen corresponding path program 53 times [2021-10-13 17:53:44,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:44,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853677875] [2021-10-13 17:53:44,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:44,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:44,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:44,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853677875] [2021-10-13 17:53:44,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853677875] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:44,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:44,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:44,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190687094] [2021-10-13 17:53:44,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:44,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:44,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:44,372 INFO L87 Difference]: Start difference. First operand 5018 states and 14979 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:45,203 INFO L93 Difference]: Finished difference Result 6694 states and 19085 transitions. [2021-10-13 17:53:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:53:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:45,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:45,217 INFO L225 Difference]: With dead ends: 6694 [2021-10-13 17:53:45,217 INFO L226 Difference]: Without dead ends: 6402 [2021-10-13 17:53:45,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 270.5ms TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:53:45,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-10-13 17:53:45,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 4908. [2021-10-13 17:53:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4908 states, 4907 states have (on average 2.9720807010393315) internal successors, (14584), 4907 states have internal predecessors, (14584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 14584 transitions. [2021-10-13 17:53:45,312 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 14584 transitions. Word has length 38 [2021-10-13 17:53:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:45,313 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 14584 transitions. [2021-10-13 17:53:45,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 14584 transitions. [2021-10-13 17:53:45,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:45,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:45,320 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:45,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-13 17:53:45,321 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:45,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:45,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1960812979, now seen corresponding path program 54 times [2021-10-13 17:53:45,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:45,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804512196] [2021-10-13 17:53:45,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:45,322 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:45,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:45,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804512196] [2021-10-13 17:53:45,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804512196] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:45,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:45,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:45,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232752127] [2021-10-13 17:53:45,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:45,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:45,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:45,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:45,446 INFO L87 Difference]: Start difference. First operand 4908 states and 14584 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:46,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:46,159 INFO L93 Difference]: Finished difference Result 6496 states and 18626 transitions. [2021-10-13 17:53:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:46,159 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:46,173 INFO L225 Difference]: With dead ends: 6496 [2021-10-13 17:53:46,173 INFO L226 Difference]: Without dead ends: 6452 [2021-10-13 17:53:46,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 212.9ms TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:53:46,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2021-10-13 17:53:46,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 4960. [2021-10-13 17:53:46,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4959 states have (on average 2.9751966122202056) internal successors, (14754), 4959 states have internal predecessors, (14754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 14754 transitions. [2021-10-13 17:53:46,272 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 14754 transitions. Word has length 38 [2021-10-13 17:53:46,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:46,273 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 14754 transitions. [2021-10-13 17:53:46,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:46,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 14754 transitions. [2021-10-13 17:53:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:46,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:46,283 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:46,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-13 17:53:46,284 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1286425769, now seen corresponding path program 55 times [2021-10-13 17:53:46,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:46,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974119655] [2021-10-13 17:53:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:46,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:46,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:46,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974119655] [2021-10-13 17:53:46,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974119655] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:46,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:46,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:46,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249739228] [2021-10-13 17:53:46,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:46,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:46,424 INFO L87 Difference]: Start difference. First operand 4960 states and 14754 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:47,430 INFO L93 Difference]: Finished difference Result 6790 states and 19347 transitions. [2021-10-13 17:53:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:53:47,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:47,444 INFO L225 Difference]: With dead ends: 6790 [2021-10-13 17:53:47,444 INFO L226 Difference]: Without dead ends: 6754 [2021-10-13 17:53:47,444 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 346.6ms TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 17:53:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2021-10-13 17:53:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 4952. [2021-10-13 17:53:47,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4952 states, 4951 states have (on average 2.976368410422137) internal successors, (14736), 4951 states have internal predecessors, (14736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 14736 transitions. [2021-10-13 17:53:47,533 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 14736 transitions. Word has length 38 [2021-10-13 17:53:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:47,534 INFO L470 AbstractCegarLoop]: Abstraction has 4952 states and 14736 transitions. [2021-10-13 17:53:47,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 14736 transitions. [2021-10-13 17:53:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:47,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:47,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:47,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-13 17:53:47,542 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:47,542 INFO L82 PathProgramCache]: Analyzing trace with hash -998825361, now seen corresponding path program 56 times [2021-10-13 17:53:47,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:47,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164568331] [2021-10-13 17:53:47,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:47,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:47,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:47,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164568331] [2021-10-13 17:53:47,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164568331] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:47,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:47,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:47,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710258125] [2021-10-13 17:53:47,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:47,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:47,653 INFO L87 Difference]: Start difference. First operand 4952 states and 14736 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:48,334 INFO L93 Difference]: Finished difference Result 7096 states and 20507 transitions. [2021-10-13 17:53:48,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:53:48,335 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:48,349 INFO L225 Difference]: With dead ends: 7096 [2021-10-13 17:53:48,350 INFO L226 Difference]: Without dead ends: 7088 [2021-10-13 17:53:48,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 215.5ms TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:53:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2021-10-13 17:53:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 4970. [2021-10-13 17:53:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4970 states, 4969 states have (on average 2.975045280740592) internal successors, (14783), 4969 states have internal predecessors, (14783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 14783 transitions. [2021-10-13 17:53:48,487 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 14783 transitions. Word has length 38 [2021-10-13 17:53:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 4970 states and 14783 transitions. [2021-10-13 17:53:48,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 14783 transitions. [2021-10-13 17:53:48,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:48,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:48,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:48,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-13 17:53:48,495 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:48,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:48,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1395251987, now seen corresponding path program 57 times [2021-10-13 17:53:48,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:48,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820842367] [2021-10-13 17:53:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:48,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:48,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:48,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:48,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820842367] [2021-10-13 17:53:48,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820842367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:48,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:48,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:48,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660385145] [2021-10-13 17:53:48,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:48,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:48,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:48,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:48,617 INFO L87 Difference]: Start difference. First operand 4970 states and 14783 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:49,347 INFO L93 Difference]: Finished difference Result 7182 states and 20698 transitions. [2021-10-13 17:53:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:53:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:49,368 INFO L225 Difference]: With dead ends: 7182 [2021-10-13 17:53:49,368 INFO L226 Difference]: Without dead ends: 7148 [2021-10-13 17:53:49,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 241.2ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:53:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7148 states. [2021-10-13 17:53:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7148 to 4966. [2021-10-13 17:53:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4965 states have (on average 2.9750251762336353) internal successors, (14771), 4965 states have internal predecessors, (14771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14771 transitions. [2021-10-13 17:53:49,516 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 14771 transitions. Word has length 38 [2021-10-13 17:53:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 14771 transitions. [2021-10-13 17:53:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:49,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 14771 transitions. [2021-10-13 17:53:49,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:49,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:49,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:49,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-13 17:53:49,530 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:49,531 INFO L82 PathProgramCache]: Analyzing trace with hash -429992391, now seen corresponding path program 58 times [2021-10-13 17:53:49,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:49,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504302201] [2021-10-13 17:53:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:49,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:49,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:49,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504302201] [2021-10-13 17:53:49,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504302201] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:49,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:49,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:49,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040111418] [2021-10-13 17:53:49,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:49,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:49,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:49,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:49,654 INFO L87 Difference]: Start difference. First operand 4966 states and 14771 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:50,407 INFO L93 Difference]: Finished difference Result 7298 states and 21223 transitions. [2021-10-13 17:53:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 17:53:50,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:50,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:50,424 INFO L225 Difference]: With dead ends: 7298 [2021-10-13 17:53:50,424 INFO L226 Difference]: Without dead ends: 7290 [2021-10-13 17:53:50,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 263.0ms TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:53:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2021-10-13 17:53:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 4968. [2021-10-13 17:53:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 4967 states have (on average 2.9744312462250857) internal successors, (14774), 4967 states have internal predecessors, (14774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:50,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 14774 transitions. [2021-10-13 17:53:50,520 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 14774 transitions. Word has length 38 [2021-10-13 17:53:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:50,521 INFO L470 AbstractCegarLoop]: Abstraction has 4968 states and 14774 transitions. [2021-10-13 17:53:50,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 14774 transitions. [2021-10-13 17:53:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:50,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:50,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:50,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-13 17:53:50,529 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:50,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:50,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1500806227, now seen corresponding path program 59 times [2021-10-13 17:53:50,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:50,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87093507] [2021-10-13 17:53:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:50,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:50,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:50,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87093507] [2021-10-13 17:53:50,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87093507] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:50,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:50,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:50,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287505446] [2021-10-13 17:53:50,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:50,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:50,621 INFO L87 Difference]: Start difference. First operand 4968 states and 14774 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:51,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:51,501 INFO L93 Difference]: Finished difference Result 7604 states and 22051 transitions. [2021-10-13 17:53:51,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:53:51,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:51,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:51,515 INFO L225 Difference]: With dead ends: 7604 [2021-10-13 17:53:51,516 INFO L226 Difference]: Without dead ends: 7596 [2021-10-13 17:53:51,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 332.0ms TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:53:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-10-13 17:53:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 4966. [2021-10-13 17:53:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4966 states, 4965 states have (on average 2.9746223564954684) internal successors, (14769), 4965 states have internal predecessors, (14769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14769 transitions. [2021-10-13 17:53:51,606 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 14769 transitions. Word has length 38 [2021-10-13 17:53:51,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:51,607 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 14769 transitions. [2021-10-13 17:53:51,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:51,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 14769 transitions. [2021-10-13 17:53:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:51,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:51,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:51,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-13 17:53:51,614 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:51,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1664448531, now seen corresponding path program 60 times [2021-10-13 17:53:51,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:51,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813018219] [2021-10-13 17:53:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:51,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:51,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:51,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813018219] [2021-10-13 17:53:51,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813018219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:51,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:51,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:51,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520302580] [2021-10-13 17:53:51,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:51,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:51,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:51,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:51,728 INFO L87 Difference]: Start difference. First operand 4966 states and 14769 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:52,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:52,647 INFO L93 Difference]: Finished difference Result 7288 states and 21201 transitions. [2021-10-13 17:53:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 17:53:52,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:52,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:52,662 INFO L225 Difference]: With dead ends: 7288 [2021-10-13 17:53:52,663 INFO L226 Difference]: Without dead ends: 7256 [2021-10-13 17:53:52,663 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 290.7ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:53:52,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7256 states. [2021-10-13 17:53:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7256 to 4960. [2021-10-13 17:53:52,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4960 states, 4959 states have (on average 2.9731800766283527) internal successors, (14744), 4959 states have internal predecessors, (14744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:52,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 14744 transitions. [2021-10-13 17:53:52,752 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 14744 transitions. Word has length 38 [2021-10-13 17:53:52,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:52,752 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 14744 transitions. [2021-10-13 17:53:52,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 14744 transitions. [2021-10-13 17:53:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:52,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:52,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:52,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-10-13 17:53:52,760 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:52,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:52,760 INFO L82 PathProgramCache]: Analyzing trace with hash 990061321, now seen corresponding path program 61 times [2021-10-13 17:53:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:52,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681830098] [2021-10-13 17:53:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:52,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:52,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:52,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681830098] [2021-10-13 17:53:52,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681830098] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:52,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:52,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:52,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310615070] [2021-10-13 17:53:52,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:52,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:52,884 INFO L87 Difference]: Start difference. First operand 4960 states and 14744 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:53,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:53,986 INFO L93 Difference]: Finished difference Result 7550 states and 21919 transitions. [2021-10-13 17:53:53,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:53:53,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:53,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:54,002 INFO L225 Difference]: With dead ends: 7550 [2021-10-13 17:53:54,002 INFO L226 Difference]: Without dead ends: 7526 [2021-10-13 17:53:54,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 388.6ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-13 17:53:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2021-10-13 17:53:54,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 4950. [2021-10-13 17:53:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4949 states have (on average 2.975752677308547) internal successors, (14727), 4949 states have internal predecessors, (14727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 14727 transitions. [2021-10-13 17:53:54,101 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 14727 transitions. Word has length 38 [2021-10-13 17:53:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:54,101 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 14727 transitions. [2021-10-13 17:53:54,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 14727 transitions. [2021-10-13 17:53:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:54,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:54,109 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:54,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-10-13 17:53:54,109 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:54,109 INFO L82 PathProgramCache]: Analyzing trace with hash -83429617, now seen corresponding path program 62 times [2021-10-13 17:53:54,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:54,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744918432] [2021-10-13 17:53:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:54,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:54,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:54,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744918432] [2021-10-13 17:53:54,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744918432] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:54,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:54,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:53:54,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196125012] [2021-10-13 17:53:54,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:53:54,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:53:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:53:54,195 INFO L87 Difference]: Start difference. First operand 4950 states and 14727 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:54,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:54,722 INFO L93 Difference]: Finished difference Result 6964 states and 20178 transitions. [2021-10-13 17:53:54,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:53:54,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:54,735 INFO L225 Difference]: With dead ends: 6964 [2021-10-13 17:53:54,735 INFO L226 Difference]: Without dead ends: 6742 [2021-10-13 17:53:54,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 175.2ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:53:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2021-10-13 17:53:54,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 5028. [2021-10-13 17:53:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5028 states, 5027 states have (on average 2.978317087726278) internal successors, (14972), 5027 states have internal predecessors, (14972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:54,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 14972 transitions. [2021-10-13 17:53:54,825 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 14972 transitions. Word has length 38 [2021-10-13 17:53:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:54,825 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 14972 transitions. [2021-10-13 17:53:54,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:54,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 14972 transitions. [2021-10-13 17:53:54,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:54,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:54,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:54,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-10-13 17:53:54,833 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:54,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:54,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1212463843, now seen corresponding path program 63 times [2021-10-13 17:53:54,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:54,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033337070] [2021-10-13 17:53:54,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:54,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:54,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:54,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033337070] [2021-10-13 17:53:54,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033337070] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:54,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:54,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:54,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789114103] [2021-10-13 17:53:54,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:54,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:54,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:54,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:54,966 INFO L87 Difference]: Start difference. First operand 5028 states and 14972 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:55,891 INFO L93 Difference]: Finished difference Result 7034 states and 20305 transitions. [2021-10-13 17:53:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 17:53:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:55,906 INFO L225 Difference]: With dead ends: 7034 [2021-10-13 17:53:55,906 INFO L226 Difference]: Without dead ends: 6990 [2021-10-13 17:53:55,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 352.3ms TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:53:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2021-10-13 17:53:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 5048. [2021-10-13 17:53:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5048 states, 5047 states have (on average 2.9732514364969287) internal successors, (15006), 5047 states have internal predecessors, (15006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 15006 transitions. [2021-10-13 17:53:56,010 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 15006 transitions. Word has length 38 [2021-10-13 17:53:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:56,010 INFO L470 AbstractCegarLoop]: Abstraction has 5048 states and 15006 transitions. [2021-10-13 17:53:56,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:56,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 15006 transitions. [2021-10-13 17:53:56,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:56,018 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:56,018 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:56,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-10-13 17:53:56,019 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:56,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:56,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1719528207, now seen corresponding path program 64 times [2021-10-13 17:53:56,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:56,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913713601] [2021-10-13 17:53:56,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:56,020 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:56,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:56,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913713601] [2021-10-13 17:53:56,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913713601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:56,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:56,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:53:56,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245094554] [2021-10-13 17:53:56,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:53:56,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:53:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:53:56,132 INFO L87 Difference]: Start difference. First operand 5048 states and 15006 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:57,004 INFO L93 Difference]: Finished difference Result 7488 states and 21580 transitions. [2021-10-13 17:53:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:53:57,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:57,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:57,020 INFO L225 Difference]: With dead ends: 7488 [2021-10-13 17:53:57,020 INFO L226 Difference]: Without dead ends: 7472 [2021-10-13 17:53:57,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 305.2ms TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:53:57,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2021-10-13 17:53:57,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 5058. [2021-10-13 17:53:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5058 states, 5057 states have (on average 2.971129127941467) internal successors, (15025), 5057 states have internal predecessors, (15025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 15025 transitions. [2021-10-13 17:53:57,123 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 15025 transitions. Word has length 38 [2021-10-13 17:53:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:57,124 INFO L470 AbstractCegarLoop]: Abstraction has 5058 states and 15025 transitions. [2021-10-13 17:53:57,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 15025 transitions. [2021-10-13 17:53:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:57,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:57,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:57,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-10-13 17:53:57,132 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:57,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:57,132 INFO L82 PathProgramCache]: Analyzing trace with hash 648714371, now seen corresponding path program 65 times [2021-10-13 17:53:57,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:57,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961641] [2021-10-13 17:53:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:57,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:57,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:57,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961641] [2021-10-13 17:53:57,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:57,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:57,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:57,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444734672] [2021-10-13 17:53:57,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:57,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:57,249 INFO L87 Difference]: Start difference. First operand 5058 states and 15025 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:58,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:58,363 INFO L93 Difference]: Finished difference Result 7886 states and 22592 transitions. [2021-10-13 17:53:58,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-13 17:53:58,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:58,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:58,379 INFO L225 Difference]: With dead ends: 7886 [2021-10-13 17:53:58,379 INFO L226 Difference]: Without dead ends: 7830 [2021-10-13 17:53:58,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 437.6ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 17:53:58,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2021-10-13 17:53:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 5014. [2021-10-13 17:53:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 5013 states have (on average 2.9776580889686812) internal successors, (14927), 5013 states have internal predecessors, (14927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:58,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 14927 transitions. [2021-10-13 17:53:58,475 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 14927 transitions. Word has length 38 [2021-10-13 17:53:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:58,476 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 14927 transitions. [2021-10-13 17:53:58,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 14927 transitions. [2021-10-13 17:53:58,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:58,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:58,484 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:58,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-10-13 17:53:58,484 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:58,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:58,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1394968557, now seen corresponding path program 66 times [2021-10-13 17:53:58,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:58,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709746947] [2021-10-13 17:53:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:58,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:58,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:58,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:58,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709746947] [2021-10-13 17:53:58,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709746947] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:58,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:58,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:53:58,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449581363] [2021-10-13 17:53:58,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:53:58,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:53:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:53:58,603 INFO L87 Difference]: Start difference. First operand 5014 states and 14927 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:59,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:53:59,227 INFO L93 Difference]: Finished difference Result 6512 states and 19102 transitions. [2021-10-13 17:53:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:53:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:53:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:53:59,240 INFO L225 Difference]: With dead ends: 6512 [2021-10-13 17:53:59,240 INFO L226 Difference]: Without dead ends: 6496 [2021-10-13 17:53:59,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 237.6ms TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:53:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2021-10-13 17:53:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 5012. [2021-10-13 17:53:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5012 states, 5011 states have (on average 2.9778487327878667) internal successors, (14922), 5011 states have internal predecessors, (14922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 14922 transitions. [2021-10-13 17:53:59,326 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 14922 transitions. Word has length 38 [2021-10-13 17:53:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:53:59,326 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 14922 transitions. [2021-10-13 17:53:59,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:53:59,326 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 14922 transitions. [2021-10-13 17:53:59,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:53:59,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:53:59,335 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:53:59,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-13 17:53:59,335 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:53:59,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:53:59,335 INFO L82 PathProgramCache]: Analyzing trace with hash 721986531, now seen corresponding path program 67 times [2021-10-13 17:53:59,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:53:59,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538723277] [2021-10-13 17:53:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:53:59,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:53:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:53:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:53:59,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:53:59,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538723277] [2021-10-13 17:53:59,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538723277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:53:59,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:53:59,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:53:59,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709134308] [2021-10-13 17:53:59,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:53:59,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:53:59,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:53:59,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:53:59,466 INFO L87 Difference]: Start difference. First operand 5012 states and 14922 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:00,475 INFO L93 Difference]: Finished difference Result 7258 states and 20843 transitions. [2021-10-13 17:54:00,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:54:00,475 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:00,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:00,489 INFO L225 Difference]: With dead ends: 7258 [2021-10-13 17:54:00,490 INFO L226 Difference]: Without dead ends: 7188 [2021-10-13 17:54:00,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 399.0ms TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 17:54:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-10-13 17:54:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5114. [2021-10-13 17:54:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5113 states have (on average 2.9708585957363582) internal successors, (15190), 5113 states have internal predecessors, (15190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 15190 transitions. [2021-10-13 17:54:00,586 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 15190 transitions. Word has length 38 [2021-10-13 17:54:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:00,586 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 15190 transitions. [2021-10-13 17:54:00,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 15190 transitions. [2021-10-13 17:54:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:00,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:00,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:00,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-10-13 17:54:00,597 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:00,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:00,597 INFO L82 PathProgramCache]: Analyzing trace with hash -971475479, now seen corresponding path program 68 times [2021-10-13 17:54:00,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:00,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64924505] [2021-10-13 17:54:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:00,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:00,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:00,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64924505] [2021-10-13 17:54:00,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64924505] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:00,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:00,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:00,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164148772] [2021-10-13 17:54:00,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:00,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:00,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:00,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:00,711 INFO L87 Difference]: Start difference. First operand 5114 states and 15190 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:01,548 INFO L93 Difference]: Finished difference Result 7508 states and 21592 transitions. [2021-10-13 17:54:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:54:01,549 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:01,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:01,563 INFO L225 Difference]: With dead ends: 7508 [2021-10-13 17:54:01,563 INFO L226 Difference]: Without dead ends: 7464 [2021-10-13 17:54:01,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 300.6ms TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 17:54:01,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-10-13 17:54:01,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 5140. [2021-10-13 17:54:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5140 states, 5139 states have (on average 2.968476357267951) internal successors, (15255), 5139 states have internal predecessors, (15255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5140 states to 5140 states and 15255 transitions. [2021-10-13 17:54:01,663 INFO L78 Accepts]: Start accepts. Automaton has 5140 states and 15255 transitions. Word has length 38 [2021-10-13 17:54:01,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:01,664 INFO L470 AbstractCegarLoop]: Abstraction has 5140 states and 15255 transitions. [2021-10-13 17:54:01,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:01,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5140 states and 15255 transitions. [2021-10-13 17:54:01,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:01,673 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:01,673 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:01,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-13 17:54:01,673 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:01,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:01,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1645862689, now seen corresponding path program 69 times [2021-10-13 17:54:01,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:01,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865938482] [2021-10-13 17:54:01,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:01,674 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:01,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:01,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865938482] [2021-10-13 17:54:01,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865938482] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:01,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:01,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:01,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680532999] [2021-10-13 17:54:01,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:01,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:01,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:01,802 INFO L87 Difference]: Start difference. First operand 5140 states and 15255 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:03,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:03,007 INFO L93 Difference]: Finished difference Result 7920 states and 22623 transitions. [2021-10-13 17:54:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 17:54:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:03,023 INFO L225 Difference]: With dead ends: 7920 [2021-10-13 17:54:03,023 INFO L226 Difference]: Without dead ends: 7838 [2021-10-13 17:54:03,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 474.2ms TimeCoverageRelationStatistics Valid=430, Invalid=1640, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 17:54:03,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2021-10-13 17:54:03,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 5090. [2021-10-13 17:54:03,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5090 states, 5089 states have (on average 2.972882688150914) internal successors, (15129), 5089 states have internal predecessors, (15129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 15129 transitions. [2021-10-13 17:54:03,165 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 15129 transitions. Word has length 38 [2021-10-13 17:54:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:03,165 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 15129 transitions. [2021-10-13 17:54:03,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 15129 transitions. [2021-10-13 17:54:03,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:03,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:03,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:03,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-10-13 17:54:03,175 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:03,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:03,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1715070647, now seen corresponding path program 70 times [2021-10-13 17:54:03,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:03,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519112390] [2021-10-13 17:54:03,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:03,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:03,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:03,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:03,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519112390] [2021-10-13 17:54:03,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519112390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:03,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:03,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:03,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597449876] [2021-10-13 17:54:03,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:03,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:03,303 INFO L87 Difference]: Start difference. First operand 5090 states and 15129 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:04,011 INFO L93 Difference]: Finished difference Result 6536 states and 19108 transitions. [2021-10-13 17:54:04,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 17:54:04,012 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:04,030 INFO L225 Difference]: With dead ends: 6536 [2021-10-13 17:54:04,031 INFO L226 Difference]: Without dead ends: 6506 [2021-10-13 17:54:04,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 259.1ms TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:54:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2021-10-13 17:54:04,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 5074. [2021-10-13 17:54:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5073 states have (on average 2.976936723832052) internal successors, (15102), 5073 states have internal predecessors, (15102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 15102 transitions. [2021-10-13 17:54:04,122 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 15102 transitions. Word has length 38 [2021-10-13 17:54:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:04,123 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 15102 transitions. [2021-10-13 17:54:04,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 15102 transitions. [2021-10-13 17:54:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:04,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:04,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:04,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-10-13 17:54:04,131 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:04,132 INFO L82 PathProgramCache]: Analyzing trace with hash -799932749, now seen corresponding path program 71 times [2021-10-13 17:54:04,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:04,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120235194] [2021-10-13 17:54:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:04,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:04,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:04,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120235194] [2021-10-13 17:54:04,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120235194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:04,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:04,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:04,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174315439] [2021-10-13 17:54:04,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:04,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:04,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:04,212 INFO L87 Difference]: Start difference. First operand 5074 states and 15102 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:04,746 INFO L93 Difference]: Finished difference Result 6956 states and 19737 transitions. [2021-10-13 17:54:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:54:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:04,765 INFO L225 Difference]: With dead ends: 6956 [2021-10-13 17:54:04,766 INFO L226 Difference]: Without dead ends: 6944 [2021-10-13 17:54:04,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:54:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2021-10-13 17:54:04,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 5086. [2021-10-13 17:54:04,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 5085 states have (on average 2.977187807276303) internal successors, (15139), 5085 states have internal predecessors, (15139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 15139 transitions. [2021-10-13 17:54:04,909 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 15139 transitions. Word has length 38 [2021-10-13 17:54:04,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:04,909 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 15139 transitions. [2021-10-13 17:54:04,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:04,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 15139 transitions. [2021-10-13 17:54:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:04,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:04,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:04,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-10-13 17:54:04,920 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:04,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1244378183, now seen corresponding path program 72 times [2021-10-13 17:54:04,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:04,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432492421] [2021-10-13 17:54:04,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:04,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:05,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:05,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432492421] [2021-10-13 17:54:05,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432492421] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:05,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:05,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987575365] [2021-10-13 17:54:05,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:05,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:05,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:05,035 INFO L87 Difference]: Start difference. First operand 5086 states and 15139 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:05,768 INFO L93 Difference]: Finished difference Result 6906 states and 19609 transitions. [2021-10-13 17:54:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:54:05,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:05,781 INFO L225 Difference]: With dead ends: 6906 [2021-10-13 17:54:05,781 INFO L226 Difference]: Without dead ends: 6834 [2021-10-13 17:54:05,782 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2021-10-13 17:54:05,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 5066. [2021-10-13 17:54:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5066 states, 5065 states have (on average 2.9772951628825273) internal successors, (15080), 5065 states have internal predecessors, (15080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 15080 transitions. [2021-10-13 17:54:05,871 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 15080 transitions. Word has length 38 [2021-10-13 17:54:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:05,871 INFO L470 AbstractCegarLoop]: Abstraction has 5066 states and 15080 transitions. [2021-10-13 17:54:05,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 15080 transitions. [2021-10-13 17:54:05,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:05,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:05,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:05,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-10-13 17:54:05,879 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:05,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:05,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1162564555, now seen corresponding path program 73 times [2021-10-13 17:54:05,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:05,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029502179] [2021-10-13 17:54:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:05,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:05,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:05,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029502179] [2021-10-13 17:54:05,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029502179] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:05,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:05,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:05,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542881364] [2021-10-13 17:54:05,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:05,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:05,967 INFO L87 Difference]: Start difference. First operand 5066 states and 15080 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:06,523 INFO L93 Difference]: Finished difference Result 6848 states and 19601 transitions. [2021-10-13 17:54:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:54:06,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:06,536 INFO L225 Difference]: With dead ends: 6848 [2021-10-13 17:54:06,536 INFO L226 Difference]: Without dead ends: 6836 [2021-10-13 17:54:06,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 178.4ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:54:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2021-10-13 17:54:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 5056. [2021-10-13 17:54:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5055 states have (on average 2.9758654797230464) internal successors, (15043), 5055 states have internal predecessors, (15043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 15043 transitions. [2021-10-13 17:54:06,624 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 15043 transitions. Word has length 38 [2021-10-13 17:54:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:06,624 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 15043 transitions. [2021-10-13 17:54:06,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 15043 transitions. [2021-10-13 17:54:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:06,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:06,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:06,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-10-13 17:54:06,632 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1297716341, now seen corresponding path program 74 times [2021-10-13 17:54:06,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:06,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812828047] [2021-10-13 17:54:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:06,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:06,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:06,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812828047] [2021-10-13 17:54:06,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812828047] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:06,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:06,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:06,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180654977] [2021-10-13 17:54:06,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:06,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:06,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:06,715 INFO L87 Difference]: Start difference. First operand 5056 states and 15043 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:07,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:07,536 INFO L93 Difference]: Finished difference Result 7178 states and 20348 transitions. [2021-10-13 17:54:07,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:54:07,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:07,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:07,550 INFO L225 Difference]: With dead ends: 7178 [2021-10-13 17:54:07,550 INFO L226 Difference]: Without dead ends: 7170 [2021-10-13 17:54:07,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 268.6ms TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:54:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-10-13 17:54:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 5052. [2021-10-13 17:54:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 5051 states have (on average 2.976242328251831) internal successors, (15033), 5051 states have internal predecessors, (15033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 15033 transitions. [2021-10-13 17:54:07,649 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 15033 transitions. Word has length 38 [2021-10-13 17:54:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:07,649 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 15033 transitions. [2021-10-13 17:54:07,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 15033 transitions. [2021-10-13 17:54:07,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:07,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:07,657 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:07,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-10-13 17:54:07,657 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:07,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:07,658 INFO L82 PathProgramCache]: Analyzing trace with hash 635709721, now seen corresponding path program 75 times [2021-10-13 17:54:07,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:07,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544654842] [2021-10-13 17:54:07,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:07,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:07,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:07,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544654842] [2021-10-13 17:54:07,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544654842] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:07,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:07,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:07,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420528103] [2021-10-13 17:54:07,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:07,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:07,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:07,772 INFO L87 Difference]: Start difference. First operand 5052 states and 15033 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:08,497 INFO L93 Difference]: Finished difference Result 6744 states and 19296 transitions. [2021-10-13 17:54:08,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:54:08,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:08,510 INFO L225 Difference]: With dead ends: 6744 [2021-10-13 17:54:08,510 INFO L226 Difference]: Without dead ends: 6676 [2021-10-13 17:54:08,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 205.1ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-10-13 17:54:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 4992. [2021-10-13 17:54:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4992 states, 4991 states have (on average 2.9727509517130835) internal successors, (14837), 4991 states have internal predecessors, (14837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 14837 transitions. [2021-10-13 17:54:08,600 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 14837 transitions. Word has length 38 [2021-10-13 17:54:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:08,600 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 14837 transitions. [2021-10-13 17:54:08,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 14837 transitions. [2021-10-13 17:54:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:08,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:08,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:08,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-10-13 17:54:08,608 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:08,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:08,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1051679685, now seen corresponding path program 76 times [2021-10-13 17:54:08,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:08,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292702823] [2021-10-13 17:54:08,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:08,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:08,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:08,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292702823] [2021-10-13 17:54:08,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292702823] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:08,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:08,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:08,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677521662] [2021-10-13 17:54:08,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:08,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:08,733 INFO L87 Difference]: Start difference. First operand 4992 states and 14837 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:09,728 INFO L93 Difference]: Finished difference Result 6882 states and 19542 transitions. [2021-10-13 17:54:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:54:09,728 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:09,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:09,743 INFO L225 Difference]: With dead ends: 6882 [2021-10-13 17:54:09,743 INFO L226 Difference]: Without dead ends: 6830 [2021-10-13 17:54:09,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 318.1ms TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:54:09,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2021-10-13 17:54:09,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 4964. [2021-10-13 17:54:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4964 states, 4963 states have (on average 2.9790449325005035) internal successors, (14785), 4963 states have internal predecessors, (14785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:09,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 14785 transitions. [2021-10-13 17:54:09,893 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 14785 transitions. Word has length 38 [2021-10-13 17:54:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:09,893 INFO L470 AbstractCegarLoop]: Abstraction has 4964 states and 14785 transitions. [2021-10-13 17:54:09,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 14785 transitions. [2021-10-13 17:54:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:09,901 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:09,901 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:09,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-10-13 17:54:09,901 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1985279637, now seen corresponding path program 77 times [2021-10-13 17:54:09,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:09,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610215457] [2021-10-13 17:54:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:09,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:09,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:09,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:09,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610215457] [2021-10-13 17:54:09,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610215457] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:09,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:09,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:09,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077889022] [2021-10-13 17:54:09,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:09,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:09,985 INFO L87 Difference]: Start difference. First operand 4964 states and 14785 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:10,559 INFO L93 Difference]: Finished difference Result 6454 states and 18411 transitions. [2021-10-13 17:54:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:10,572 INFO L225 Difference]: With dead ends: 6454 [2021-10-13 17:54:10,572 INFO L226 Difference]: Without dead ends: 6168 [2021-10-13 17:54:10,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2021-10-13 17:54:10,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 5000. [2021-10-13 17:54:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5000 states, 4999 states have (on average 2.9707941588317666) internal successors, (14851), 4999 states have internal predecessors, (14851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 14851 transitions. [2021-10-13 17:54:10,655 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 14851 transitions. Word has length 38 [2021-10-13 17:54:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 5000 states and 14851 transitions. [2021-10-13 17:54:10,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:10,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 14851 transitions. [2021-10-13 17:54:10,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:10,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:10,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:10,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-10-13 17:54:10,663 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:10,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:10,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1254738539, now seen corresponding path program 78 times [2021-10-13 17:54:10,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:10,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302890861] [2021-10-13 17:54:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:10,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:10,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:10,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302890861] [2021-10-13 17:54:10,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302890861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:10,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:10,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:10,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104048311] [2021-10-13 17:54:10,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:10,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:10,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:10,759 INFO L87 Difference]: Start difference. First operand 5000 states and 14851 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:11,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:11,679 INFO L93 Difference]: Finished difference Result 6860 states and 19780 transitions. [2021-10-13 17:54:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:54:11,683 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:11,695 INFO L225 Difference]: With dead ends: 6860 [2021-10-13 17:54:11,696 INFO L226 Difference]: Without dead ends: 6816 [2021-10-13 17:54:11,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 368.8ms TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 17:54:11,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2021-10-13 17:54:11,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 5008. [2021-10-13 17:54:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5008 states, 5007 states have (on average 2.9724385859796287) internal successors, (14883), 5007 states have internal predecessors, (14883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 14883 transitions. [2021-10-13 17:54:11,785 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 14883 transitions. Word has length 38 [2021-10-13 17:54:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:11,786 INFO L470 AbstractCegarLoop]: Abstraction has 5008 states and 14883 transitions. [2021-10-13 17:54:11,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:11,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 14883 transitions. [2021-10-13 17:54:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:11,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:11,796 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:11,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-13 17:54:11,796 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1007751455, now seen corresponding path program 79 times [2021-10-13 17:54:11,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:11,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219170888] [2021-10-13 17:54:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:11,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:11,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:11,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219170888] [2021-10-13 17:54:11,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219170888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:11,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:11,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:54:11,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350762578] [2021-10-13 17:54:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:54:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:54:11,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:54:11,866 INFO L87 Difference]: Start difference. First operand 5008 states and 14883 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:12,313 INFO L93 Difference]: Finished difference Result 5914 states and 16890 transitions. [2021-10-13 17:54:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:54:12,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:12,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:12,324 INFO L225 Difference]: With dead ends: 5914 [2021-10-13 17:54:12,324 INFO L226 Difference]: Without dead ends: 5834 [2021-10-13 17:54:12,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:54:12,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-10-13 17:54:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5024. [2021-10-13 17:54:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5024 states, 5023 states have (on average 2.9560023890105516) internal successors, (14848), 5023 states have internal predecessors, (14848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 14848 transitions. [2021-10-13 17:54:12,404 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 14848 transitions. Word has length 38 [2021-10-13 17:54:12,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:12,404 INFO L470 AbstractCegarLoop]: Abstraction has 5024 states and 14848 transitions. [2021-10-13 17:54:12,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:12,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 14848 transitions. [2021-10-13 17:54:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:12,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:12,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:12,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-10-13 17:54:12,412 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:12,412 INFO L82 PathProgramCache]: Analyzing trace with hash -2108986949, now seen corresponding path program 80 times [2021-10-13 17:54:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:12,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066723751] [2021-10-13 17:54:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:12,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:12,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:12,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066723751] [2021-10-13 17:54:12,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066723751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:12,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:12,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:12,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605623751] [2021-10-13 17:54:12,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:12,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:12,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:12,511 INFO L87 Difference]: Start difference. First operand 5024 states and 14848 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:13,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:13,596 INFO L93 Difference]: Finished difference Result 7126 states and 20298 transitions. [2021-10-13 17:54:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-13 17:54:13,596 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:13,609 INFO L225 Difference]: With dead ends: 7126 [2021-10-13 17:54:13,610 INFO L226 Difference]: Without dead ends: 7034 [2021-10-13 17:54:13,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 419.7ms TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-10-13 17:54:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2021-10-13 17:54:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 5022. [2021-10-13 17:54:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5022 states, 5021 states have (on average 2.9607647878908585) internal successors, (14866), 5021 states have internal predecessors, (14866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 14866 transitions. [2021-10-13 17:54:13,709 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 14866 transitions. Word has length 38 [2021-10-13 17:54:13,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:13,709 INFO L470 AbstractCegarLoop]: Abstraction has 5022 states and 14866 transitions. [2021-10-13 17:54:13,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 14866 transitions. [2021-10-13 17:54:13,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:13,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:13,717 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:13,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-10-13 17:54:13,717 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:13,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1134162117, now seen corresponding path program 81 times [2021-10-13 17:54:13,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:13,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001281855] [2021-10-13 17:54:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:13,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:13,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:13,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001281855] [2021-10-13 17:54:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001281855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:13,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:13,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730562147] [2021-10-13 17:54:13,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:13,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:13,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:13,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:13,814 INFO L87 Difference]: Start difference. First operand 5022 states and 14866 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:14,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:14,344 INFO L93 Difference]: Finished difference Result 5808 states and 16853 transitions. [2021-10-13 17:54:14,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:54:14,344 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:14,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:14,355 INFO L225 Difference]: With dead ends: 5808 [2021-10-13 17:54:14,355 INFO L226 Difference]: Without dead ends: 5532 [2021-10-13 17:54:14,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:54:14,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-10-13 17:54:14,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5122. [2021-10-13 17:54:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5122 states, 5121 states have (on average 2.9519625073227886) internal successors, (15117), 5121 states have internal predecessors, (15117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5122 states to 5122 states and 15117 transitions. [2021-10-13 17:54:14,438 INFO L78 Accepts]: Start accepts. Automaton has 5122 states and 15117 transitions. Word has length 38 [2021-10-13 17:54:14,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:14,438 INFO L470 AbstractCegarLoop]: Abstraction has 5122 states and 15117 transitions. [2021-10-13 17:54:14,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 5122 states and 15117 transitions. [2021-10-13 17:54:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:14,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:14,446 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-10-13 17:54:14,446 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:14,447 INFO L82 PathProgramCache]: Analyzing trace with hash -746729101, now seen corresponding path program 82 times [2021-10-13 17:54:14,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:14,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876435715] [2021-10-13 17:54:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:14,447 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:14,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:14,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876435715] [2021-10-13 17:54:14,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876435715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:14,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:14,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:14,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200276865] [2021-10-13 17:54:14,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:14,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:14,522 INFO L87 Difference]: Start difference. First operand 5122 states and 15117 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:15,175 INFO L93 Difference]: Finished difference Result 7190 states and 20377 transitions. [2021-10-13 17:54:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:54:15,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:15,189 INFO L225 Difference]: With dead ends: 7190 [2021-10-13 17:54:15,189 INFO L226 Difference]: Without dead ends: 7174 [2021-10-13 17:54:15,190 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 221.2ms TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:54:15,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2021-10-13 17:54:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 5126. [2021-10-13 17:54:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5126 states, 5125 states have (on average 2.950048780487805) internal successors, (15119), 5125 states have internal predecessors, (15119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 15119 transitions. [2021-10-13 17:54:15,287 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 15119 transitions. Word has length 38 [2021-10-13 17:54:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:15,287 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 15119 transitions. [2021-10-13 17:54:15,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 15119 transitions. [2021-10-13 17:54:15,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:15,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:15,295 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:15,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-10-13 17:54:15,295 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1713551795, now seen corresponding path program 83 times [2021-10-13 17:54:15,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:15,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299526630] [2021-10-13 17:54:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:15,296 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:15,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:15,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299526630] [2021-10-13 17:54:15,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299526630] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:15,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:15,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:15,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396853502] [2021-10-13 17:54:15,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:15,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:15,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:15,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:15,407 INFO L87 Difference]: Start difference. First operand 5126 states and 15119 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:16,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:16,410 INFO L93 Difference]: Finished difference Result 7572 states and 21274 transitions. [2021-10-13 17:54:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 17:54:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:16,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:16,425 INFO L225 Difference]: With dead ends: 7572 [2021-10-13 17:54:16,425 INFO L226 Difference]: Without dead ends: 7540 [2021-10-13 17:54:16,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 342.0ms TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:54:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7540 states. [2021-10-13 17:54:16,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7540 to 5104. [2021-10-13 17:54:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5104 states, 5103 states have (on average 2.9500293944738387) internal successors, (15054), 5103 states have internal predecessors, (15054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 15054 transitions. [2021-10-13 17:54:16,518 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 15054 transitions. Word has length 38 [2021-10-13 17:54:16,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:16,518 INFO L470 AbstractCegarLoop]: Abstraction has 5104 states and 15054 transitions. [2021-10-13 17:54:16,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 15054 transitions. [2021-10-13 17:54:16,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:16,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:16,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:16,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-10-13 17:54:16,554 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 719238175, now seen corresponding path program 84 times [2021-10-13 17:54:16,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:16,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877817324] [2021-10-13 17:54:16,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:16,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:16,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:16,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877817324] [2021-10-13 17:54:16,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877817324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:16,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:16,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:16,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489359699] [2021-10-13 17:54:16,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:16,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:16,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:16,661 INFO L87 Difference]: Start difference. First operand 5104 states and 15054 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:17,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:17,404 INFO L93 Difference]: Finished difference Result 6310 states and 17929 transitions. [2021-10-13 17:54:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:54:17,405 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:17,417 INFO L225 Difference]: With dead ends: 6310 [2021-10-13 17:54:17,417 INFO L226 Difference]: Without dead ends: 6258 [2021-10-13 17:54:17,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 267.4ms TimeCoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2021-10-13 17:54:17,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-10-13 17:54:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 5074. [2021-10-13 17:54:17,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5074 states, 5073 states have (on average 2.9503252513305736) internal successors, (14967), 5073 states have internal predecessors, (14967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:17,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 14967 transitions. [2021-10-13 17:54:17,503 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 14967 transitions. Word has length 38 [2021-10-13 17:54:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:17,503 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 14967 transitions. [2021-10-13 17:54:17,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 14967 transitions. [2021-10-13 17:54:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:17,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:17,511 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:17,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-10-13 17:54:17,512 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1640336809, now seen corresponding path program 85 times [2021-10-13 17:54:17,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:17,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853809193] [2021-10-13 17:54:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:17,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:17,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:17,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853809193] [2021-10-13 17:54:17,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853809193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:17,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:17,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:17,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827986461] [2021-10-13 17:54:17,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:17,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:17,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:17,607 INFO L87 Difference]: Start difference. First operand 5074 states and 14967 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:18,535 INFO L93 Difference]: Finished difference Result 6302 states and 17885 transitions. [2021-10-13 17:54:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:54:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:18,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:18,546 INFO L225 Difference]: With dead ends: 6302 [2021-10-13 17:54:18,546 INFO L226 Difference]: Without dead ends: 6258 [2021-10-13 17:54:18,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 358.6ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:54:18,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-10-13 17:54:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 4968. [2021-10-13 17:54:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4968 states, 4967 states have (on average 2.9639621501912625) internal successors, (14722), 4967 states have internal predecessors, (14722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:18,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 14722 transitions. [2021-10-13 17:54:18,636 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 14722 transitions. Word has length 38 [2021-10-13 17:54:18,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:18,636 INFO L470 AbstractCegarLoop]: Abstraction has 4968 states and 14722 transitions. [2021-10-13 17:54:18,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:18,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 14722 transitions. [2021-10-13 17:54:18,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:18,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:18,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:18,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-10-13 17:54:18,645 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:18,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:18,645 INFO L82 PathProgramCache]: Analyzing trace with hash 307689743, now seen corresponding path program 86 times [2021-10-13 17:54:18,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:18,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13500025] [2021-10-13 17:54:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:18,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:18,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:18,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13500025] [2021-10-13 17:54:18,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13500025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:18,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:18,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:18,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529723432] [2021-10-13 17:54:18,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:18,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:18,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:18,747 INFO L87 Difference]: Start difference. First operand 4968 states and 14722 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:19,429 INFO L93 Difference]: Finished difference Result 5706 states and 16393 transitions. [2021-10-13 17:54:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:54:19,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:19,439 INFO L225 Difference]: With dead ends: 5706 [2021-10-13 17:54:19,440 INFO L226 Difference]: Without dead ends: 5638 [2021-10-13 17:54:19,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 241.9ms TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:54:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-10-13 17:54:19,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5064. [2021-10-13 17:54:19,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 5063 states have (on average 2.9527947857001777) internal successors, (14950), 5063 states have internal predecessors, (14950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 14950 transitions. [2021-10-13 17:54:19,522 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 14950 transitions. Word has length 38 [2021-10-13 17:54:19,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:19,522 INFO L470 AbstractCegarLoop]: Abstraction has 5064 states and 14950 transitions. [2021-10-13 17:54:19,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:19,522 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 14950 transitions. [2021-10-13 17:54:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:19,529 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:19,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:19,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-10-13 17:54:19,530 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash 123561245, now seen corresponding path program 87 times [2021-10-13 17:54:19,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:19,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161835261] [2021-10-13 17:54:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:19,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:19,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:19,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:19,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161835261] [2021-10-13 17:54:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161835261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:19,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:19,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:19,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352105676] [2021-10-13 17:54:19,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:19,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:19,634 INFO L87 Difference]: Start difference. First operand 5064 states and 14950 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:20,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:20,535 INFO L93 Difference]: Finished difference Result 6170 states and 17540 transitions. [2021-10-13 17:54:20,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:54:20,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:20,557 INFO L225 Difference]: With dead ends: 6170 [2021-10-13 17:54:20,557 INFO L226 Difference]: Without dead ends: 6096 [2021-10-13 17:54:20,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 282.8ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:54:20,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2021-10-13 17:54:20,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5064. [2021-10-13 17:54:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5064 states, 5063 states have (on average 2.9492395812759233) internal successors, (14932), 5063 states have internal predecessors, (14932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:20,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 14932 transitions. [2021-10-13 17:54:20,716 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 14932 transitions. Word has length 38 [2021-10-13 17:54:20,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:20,716 INFO L470 AbstractCegarLoop]: Abstraction has 5064 states and 14932 transitions. [2021-10-13 17:54:20,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:20,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 14932 transitions. [2021-10-13 17:54:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:20,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:20,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:20,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-10-13 17:54:20,728 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1818428209, now seen corresponding path program 88 times [2021-10-13 17:54:20,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:20,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335208468] [2021-10-13 17:54:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:20,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:20,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:20,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335208468] [2021-10-13 17:54:20,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335208468] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:20,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:20,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:54:20,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375046796] [2021-10-13 17:54:20,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:54:20,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:54:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:54:20,826 INFO L87 Difference]: Start difference. First operand 5064 states and 14932 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:21,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:21,201 INFO L93 Difference]: Finished difference Result 5322 states and 15324 transitions. [2021-10-13 17:54:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:54:21,202 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:21,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:21,214 INFO L225 Difference]: With dead ends: 5322 [2021-10-13 17:54:21,215 INFO L226 Difference]: Without dead ends: 5284 [2021-10-13 17:54:21,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-13 17:54:21,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2021-10-13 17:54:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 5042. [2021-10-13 17:54:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 5041 states have (on average 2.928387224756993) internal successors, (14762), 5041 states have internal predecessors, (14762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 14762 transitions. [2021-10-13 17:54:21,295 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 14762 transitions. Word has length 38 [2021-10-13 17:54:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:21,295 INFO L470 AbstractCegarLoop]: Abstraction has 5042 states and 14762 transitions. [2021-10-13 17:54:21,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:21,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 14762 transitions. [2021-10-13 17:54:21,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:21,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:21,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:21,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-10-13 17:54:21,303 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash -932526841, now seen corresponding path program 89 times [2021-10-13 17:54:21,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:21,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368939990] [2021-10-13 17:54:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:21,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:21,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:21,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368939990] [2021-10-13 17:54:21,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368939990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:21,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:21,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:21,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613254952] [2021-10-13 17:54:21,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:21,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:21,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:21,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:21,415 INFO L87 Difference]: Start difference. First operand 5042 states and 14762 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:22,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:22,334 INFO L93 Difference]: Finished difference Result 7090 states and 19895 transitions. [2021-10-13 17:54:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:54:22,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:22,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:22,348 INFO L225 Difference]: With dead ends: 7090 [2021-10-13 17:54:22,348 INFO L226 Difference]: Without dead ends: 7022 [2021-10-13 17:54:22,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 274.7ms TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:54:22,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-10-13 17:54:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 5042. [2021-10-13 17:54:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 5041 states have (on average 2.9242213846459038) internal successors, (14741), 5041 states have internal predecessors, (14741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 14741 transitions. [2021-10-13 17:54:22,440 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 14741 transitions. Word has length 38 [2021-10-13 17:54:22,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:22,440 INFO L470 AbstractCegarLoop]: Abstraction has 5042 states and 14741 transitions. [2021-10-13 17:54:22,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:22,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 14741 transitions. [2021-10-13 17:54:22,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:22,447 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:22,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:22,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-10-13 17:54:22,448 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:22,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:22,448 INFO L82 PathProgramCache]: Analyzing trace with hash -516556877, now seen corresponding path program 90 times [2021-10-13 17:54:22,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:22,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154109058] [2021-10-13 17:54:22,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:22,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:22,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:22,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154109058] [2021-10-13 17:54:22,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154109058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:22,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:22,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:22,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844557624] [2021-10-13 17:54:22,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:22,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:22,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:22,566 INFO L87 Difference]: Start difference. First operand 5042 states and 14741 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:23,718 INFO L93 Difference]: Finished difference Result 7234 states and 20198 transitions. [2021-10-13 17:54:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:54:23,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:23,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:23,734 INFO L225 Difference]: With dead ends: 7234 [2021-10-13 17:54:23,734 INFO L226 Difference]: Without dead ends: 7112 [2021-10-13 17:54:23,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 370.5ms TimeCoverageRelationStatistics Valid=292, Invalid=1114, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:54:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2021-10-13 17:54:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 4852. [2021-10-13 17:54:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4851 states have (on average 2.932178932178932) internal successors, (14224), 4851 states have internal predecessors, (14224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 14224 transitions. [2021-10-13 17:54:23,832 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 14224 transitions. Word has length 38 [2021-10-13 17:54:23,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:23,832 INFO L470 AbstractCegarLoop]: Abstraction has 4852 states and 14224 transitions. [2021-10-13 17:54:23,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 14224 transitions. [2021-10-13 17:54:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:23,839 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:23,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:23,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-10-13 17:54:23,840 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1375303593, now seen corresponding path program 91 times [2021-10-13 17:54:23,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:23,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354258769] [2021-10-13 17:54:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:23,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:23,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:23,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354258769] [2021-10-13 17:54:23,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354258769] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:23,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:23,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:23,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433937962] [2021-10-13 17:54:23,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:23,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:23,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:23,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:23,952 INFO L87 Difference]: Start difference. First operand 4852 states and 14224 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:25,055 INFO L93 Difference]: Finished difference Result 6376 states and 17890 transitions. [2021-10-13 17:54:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 17:54:25,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:25,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:25,071 INFO L225 Difference]: With dead ends: 6376 [2021-10-13 17:54:25,072 INFO L226 Difference]: Without dead ends: 6288 [2021-10-13 17:54:25,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 388.4ms TimeCoverageRelationStatistics Valid=330, Invalid=1152, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 17:54:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-13 17:54:25,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 4800. [2021-10-13 17:54:25,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4799 states have (on average 2.9331110648051677) internal successors, (14076), 4799 states have internal predecessors, (14076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:25,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 14076 transitions. [2021-10-13 17:54:25,194 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 14076 transitions. Word has length 38 [2021-10-13 17:54:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:25,194 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 14076 transitions. [2021-10-13 17:54:25,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 14076 transitions. [2021-10-13 17:54:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:25,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:25,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-10-13 17:54:25,205 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:25,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:25,206 INFO L82 PathProgramCache]: Analyzing trace with hash -888585281, now seen corresponding path program 92 times [2021-10-13 17:54:25,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:25,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973113315] [2021-10-13 17:54:25,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:25,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:25,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:25,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973113315] [2021-10-13 17:54:25,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973113315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:25,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:25,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:25,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59536259] [2021-10-13 17:54:25,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:25,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:25,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:25,311 INFO L87 Difference]: Start difference. First operand 4800 states and 14076 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:26,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:26,169 INFO L93 Difference]: Finished difference Result 5494 states and 15717 transitions. [2021-10-13 17:54:26,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 17:54:26,170 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:26,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:26,179 INFO L225 Difference]: With dead ends: 5494 [2021-10-13 17:54:26,179 INFO L226 Difference]: Without dead ends: 5380 [2021-10-13 17:54:26,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 262.7ms TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:54:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2021-10-13 17:54:26,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 4800. [2021-10-13 17:54:26,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4800 states, 4799 states have (on average 2.9364450927276518) internal successors, (14092), 4799 states have internal predecessors, (14092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 14092 transitions. [2021-10-13 17:54:26,259 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 14092 transitions. Word has length 38 [2021-10-13 17:54:26,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:26,259 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 14092 transitions. [2021-10-13 17:54:26,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 14092 transitions. [2021-10-13 17:54:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:26,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:26,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:26,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-13 17:54:26,267 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:26,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1930180879, now seen corresponding path program 93 times [2021-10-13 17:54:26,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:26,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75465214] [2021-10-13 17:54:26,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:26,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:26,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:26,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75465214] [2021-10-13 17:54:26,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75465214] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:26,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:26,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:26,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709071091] [2021-10-13 17:54:26,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:26,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:26,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:26,370 INFO L87 Difference]: Start difference. First operand 4800 states and 14092 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:26,948 INFO L93 Difference]: Finished difference Result 6294 states and 17716 transitions. [2021-10-13 17:54:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:54:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:26,959 INFO L225 Difference]: With dead ends: 6294 [2021-10-13 17:54:26,959 INFO L226 Difference]: Without dead ends: 6282 [2021-10-13 17:54:26,960 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 172.7ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:54:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-10-13 17:54:27,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 4806. [2021-10-13 17:54:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4806 states, 4805 states have (on average 2.936732570239334) internal successors, (14111), 4805 states have internal predecessors, (14111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 14111 transitions. [2021-10-13 17:54:27,041 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 14111 transitions. Word has length 38 [2021-10-13 17:54:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:27,041 INFO L470 AbstractCegarLoop]: Abstraction has 4806 states and 14111 transitions. [2021-10-13 17:54:27,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 14111 transitions. [2021-10-13 17:54:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:27,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:27,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:27,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-10-13 17:54:27,048 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1968359791, now seen corresponding path program 94 times [2021-10-13 17:54:27,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:27,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042240593] [2021-10-13 17:54:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:27,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:27,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:27,152 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042240593] [2021-10-13 17:54:27,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042240593] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:27,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:27,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:27,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777538508] [2021-10-13 17:54:27,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:27,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:27,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:27,154 INFO L87 Difference]: Start difference. First operand 4806 states and 14111 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:27,873 INFO L93 Difference]: Finished difference Result 6242 states and 17601 transitions. [2021-10-13 17:54:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:54:27,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:27,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:27,890 INFO L225 Difference]: With dead ends: 6242 [2021-10-13 17:54:27,890 INFO L226 Difference]: Without dead ends: 6196 [2021-10-13 17:54:27,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 200.9ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:27,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-10-13 17:54:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 4796. [2021-10-13 17:54:27,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 2.9363920750782064) internal successors, (14080), 4795 states have internal predecessors, (14080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:27,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 14080 transitions. [2021-10-13 17:54:27,987 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 14080 transitions. Word has length 38 [2021-10-13 17:54:27,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:27,987 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 14080 transitions. [2021-10-13 17:54:27,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:27,988 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 14080 transitions. [2021-10-13 17:54:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:27,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:27,994 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:27,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-10-13 17:54:27,995 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1361347909, now seen corresponding path program 95 times [2021-10-13 17:54:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:27,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251184351] [2021-10-13 17:54:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:27,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:28,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:28,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:28,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251184351] [2021-10-13 17:54:28,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251184351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:28,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:28,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:28,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570549910] [2021-10-13 17:54:28,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:28,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:28,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:28,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:28,101 INFO L87 Difference]: Start difference. First operand 4796 states and 14080 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:28,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:28,744 INFO L93 Difference]: Finished difference Result 6230 states and 17638 transitions. [2021-10-13 17:54:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:54:28,745 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:28,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:28,757 INFO L225 Difference]: With dead ends: 6230 [2021-10-13 17:54:28,757 INFO L226 Difference]: Without dead ends: 6218 [2021-10-13 17:54:28,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 178.6ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:54:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-10-13 17:54:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 4786. [2021-10-13 17:54:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4786 states, 4785 states have (on average 2.9347962382445143) internal successors, (14043), 4785 states have internal predecessors, (14043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 14043 transitions. [2021-10-13 17:54:28,842 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 14043 transitions. Word has length 38 [2021-10-13 17:54:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:28,842 INFO L470 AbstractCegarLoop]: Abstraction has 4786 states and 14043 transitions. [2021-10-13 17:54:28,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 14043 transitions. [2021-10-13 17:54:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:28,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:28,850 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:28,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-10-13 17:54:28,851 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:28,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1862805551, now seen corresponding path program 96 times [2021-10-13 17:54:28,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:28,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543546092] [2021-10-13 17:54:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:28,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:28,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:28,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543546092] [2021-10-13 17:54:28,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543546092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:28,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:28,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:28,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11320468] [2021-10-13 17:54:28,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:28,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:28,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:28,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:28,938 INFO L87 Difference]: Start difference. First operand 4786 states and 14043 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:29,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:29,672 INFO L93 Difference]: Finished difference Result 6354 states and 17843 transitions. [2021-10-13 17:54:29,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:54:29,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:29,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:29,685 INFO L225 Difference]: With dead ends: 6354 [2021-10-13 17:54:29,685 INFO L226 Difference]: Without dead ends: 6346 [2021-10-13 17:54:29,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 258.1ms TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:54:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2021-10-13 17:54:29,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 4782. [2021-10-13 17:54:29,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4781 states have (on average 2.9351600083664504) internal successors, (14033), 4781 states have internal predecessors, (14033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:29,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 14033 transitions. [2021-10-13 17:54:29,774 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 14033 transitions. Word has length 38 [2021-10-13 17:54:29,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:29,774 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 14033 transitions. [2021-10-13 17:54:29,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:29,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 14033 transitions. [2021-10-13 17:54:29,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:29,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:29,781 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:29,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-10-13 17:54:29,781 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:29,782 INFO L82 PathProgramCache]: Analyzing trace with hash 733093013, now seen corresponding path program 97 times [2021-10-13 17:54:29,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:29,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41564784] [2021-10-13 17:54:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:29,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:29,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:29,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41564784] [2021-10-13 17:54:29,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41564784] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:29,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:29,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:29,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810403466] [2021-10-13 17:54:29,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:29,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:29,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:29,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:29,897 INFO L87 Difference]: Start difference. First operand 4782 states and 14033 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:30,633 INFO L93 Difference]: Finished difference Result 6110 states and 17319 transitions. [2021-10-13 17:54:30,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:54:30,633 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:30,645 INFO L225 Difference]: With dead ends: 6110 [2021-10-13 17:54:30,645 INFO L226 Difference]: Without dead ends: 6066 [2021-10-13 17:54:30,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 213.8ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:30,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2021-10-13 17:54:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 4762. [2021-10-13 17:54:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4761 states have (on average 2.93026675068263) internal successors, (13951), 4761 states have internal predecessors, (13951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:30,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 13951 transitions. [2021-10-13 17:54:30,728 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 13951 transitions. Word has length 38 [2021-10-13 17:54:30,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:30,728 INFO L470 AbstractCegarLoop]: Abstraction has 4762 states and 13951 transitions. [2021-10-13 17:54:30,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:30,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 13951 transitions. [2021-10-13 17:54:30,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:30,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:30,735 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:30,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-10-13 17:54:30,735 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:30,736 INFO L82 PathProgramCache]: Analyzing trace with hash 58705803, now seen corresponding path program 98 times [2021-10-13 17:54:30,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:30,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473219083] [2021-10-13 17:54:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:30,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:30,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:30,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473219083] [2021-10-13 17:54:30,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473219083] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:30,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:30,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:30,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157220859] [2021-10-13 17:54:30,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:30,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:30,866 INFO L87 Difference]: Start difference. First operand 4762 states and 13951 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:31,842 INFO L93 Difference]: Finished difference Result 6316 states and 17732 transitions. [2021-10-13 17:54:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:54:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:31,855 INFO L225 Difference]: With dead ends: 6316 [2021-10-13 17:54:31,855 INFO L226 Difference]: Without dead ends: 6278 [2021-10-13 17:54:31,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 313.4ms TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:54:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-10-13 17:54:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 4750. [2021-10-13 17:54:31,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4750 states, 4749 states have (on average 2.9330385344283005) internal successors, (13929), 4749 states have internal predecessors, (13929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 13929 transitions. [2021-10-13 17:54:31,970 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 13929 transitions. Word has length 38 [2021-10-13 17:54:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:31,970 INFO L470 AbstractCegarLoop]: Abstraction has 4750 states and 13929 transitions. [2021-10-13 17:54:31,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 13929 transitions. [2021-10-13 17:54:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:31,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:31,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:31,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-10-13 17:54:31,979 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:31,979 INFO L82 PathProgramCache]: Analyzing trace with hash 546338677, now seen corresponding path program 99 times [2021-10-13 17:54:31,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:31,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298015046] [2021-10-13 17:54:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:31,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:32,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:32,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298015046] [2021-10-13 17:54:32,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298015046] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:32,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:32,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:32,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427463187] [2021-10-13 17:54:32,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:32,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:32,080 INFO L87 Difference]: Start difference. First operand 4750 states and 13929 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:32,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:32,733 INFO L93 Difference]: Finished difference Result 6186 states and 17345 transitions. [2021-10-13 17:54:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:32,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:32,744 INFO L225 Difference]: With dead ends: 6186 [2021-10-13 17:54:32,744 INFO L226 Difference]: Without dead ends: 5860 [2021-10-13 17:54:32,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5860 states. [2021-10-13 17:54:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5860 to 4768. [2021-10-13 17:54:32,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4768 states, 4767 states have (on average 2.931193622823579) internal successors, (13973), 4767 states have internal predecessors, (13973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 13973 transitions. [2021-10-13 17:54:32,826 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 13973 transitions. Word has length 38 [2021-10-13 17:54:32,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:32,826 INFO L470 AbstractCegarLoop]: Abstraction has 4768 states and 13973 transitions. [2021-10-13 17:54:32,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 13973 transitions. [2021-10-13 17:54:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:32,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:32,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:32,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-10-13 17:54:32,833 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash 463613039, now seen corresponding path program 100 times [2021-10-13 17:54:32,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:32,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853357067] [2021-10-13 17:54:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:32,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:32,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:32,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:32,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:32,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853357067] [2021-10-13 17:54:32,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853357067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:32,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:32,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:32,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033876876] [2021-10-13 17:54:32,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:32,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:32,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:32,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:32,956 INFO L87 Difference]: Start difference. First operand 4768 states and 13973 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:33,945 INFO L93 Difference]: Finished difference Result 6110 states and 17148 transitions. [2021-10-13 17:54:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:54:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:33,957 INFO L225 Difference]: With dead ends: 6110 [2021-10-13 17:54:33,957 INFO L226 Difference]: Without dead ends: 6094 [2021-10-13 17:54:33,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:54:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-10-13 17:54:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 4772. [2021-10-13 17:54:34,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4772 states, 4771 states have (on average 2.930412911339342) internal successors, (13981), 4771 states have internal predecessors, (13981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 13981 transitions. [2021-10-13 17:54:34,041 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 13981 transitions. Word has length 38 [2021-10-13 17:54:34,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:34,041 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 13981 transitions. [2021-10-13 17:54:34,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 13981 transitions. [2021-10-13 17:54:34,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:34,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:34,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:34,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-13 17:54:34,049 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:34,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1648541131, now seen corresponding path program 101 times [2021-10-13 17:54:34,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:34,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127604910] [2021-10-13 17:54:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:34,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:34,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:34,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:34,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127604910] [2021-10-13 17:54:34,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127604910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:34,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:34,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:34,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437735483] [2021-10-13 17:54:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:34,173 INFO L87 Difference]: Start difference. First operand 4772 states and 13981 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:35,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:35,308 INFO L93 Difference]: Finished difference Result 6714 states and 18739 transitions. [2021-10-13 17:54:35,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 17:54:35,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:35,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:35,322 INFO L225 Difference]: With dead ends: 6714 [2021-10-13 17:54:35,322 INFO L226 Difference]: Without dead ends: 6654 [2021-10-13 17:54:35,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 394.0ms TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2021-10-13 17:54:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-10-13 17:54:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 4796. [2021-10-13 17:54:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4795 states have (on average 2.9288842544316998) internal successors, (14044), 4795 states have internal predecessors, (14044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:35,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 14044 transitions. [2021-10-13 17:54:35,405 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 14044 transitions. Word has length 38 [2021-10-13 17:54:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:35,405 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 14044 transitions. [2021-10-13 17:54:35,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 14044 transitions. [2021-10-13 17:54:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:35,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:35,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:35,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-10-13 17:54:35,412 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1750203705, now seen corresponding path program 102 times [2021-10-13 17:54:35,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:35,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773189100] [2021-10-13 17:54:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:35,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:35,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:35,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773189100] [2021-10-13 17:54:35,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773189100] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:35,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:35,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:35,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693966910] [2021-10-13 17:54:35,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:35,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:35,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:35,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:35,507 INFO L87 Difference]: Start difference. First operand 4796 states and 14044 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:35,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:35,969 INFO L93 Difference]: Finished difference Result 5406 states and 15454 transitions. [2021-10-13 17:54:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:54:35,969 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:35,979 INFO L225 Difference]: With dead ends: 5406 [2021-10-13 17:54:35,979 INFO L226 Difference]: Without dead ends: 5068 [2021-10-13 17:54:35,979 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:54:35,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2021-10-13 17:54:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 4514. [2021-10-13 17:54:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4513 states have (on average 2.9375138488810104) internal successors, (13257), 4513 states have internal predecessors, (13257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:36,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 13257 transitions. [2021-10-13 17:54:36,048 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 13257 transitions. Word has length 38 [2021-10-13 17:54:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:36,048 INFO L470 AbstractCegarLoop]: Abstraction has 4514 states and 13257 transitions. [2021-10-13 17:54:36,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 13257 transitions. [2021-10-13 17:54:36,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:36,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:36,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:36,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-10-13 17:54:36,055 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:36,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:36,055 INFO L82 PathProgramCache]: Analyzing trace with hash -454310245, now seen corresponding path program 103 times [2021-10-13 17:54:36,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:36,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144590042] [2021-10-13 17:54:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:36,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:36,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:36,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:36,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144590042] [2021-10-13 17:54:36,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144590042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:36,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:36,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:36,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011951383] [2021-10-13 17:54:36,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:36,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:36,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:36,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:36,156 INFO L87 Difference]: Start difference. First operand 4514 states and 13257 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:36,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:36,884 INFO L93 Difference]: Finished difference Result 5516 states and 15570 transitions. [2021-10-13 17:54:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:54:36,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:36,895 INFO L225 Difference]: With dead ends: 5516 [2021-10-13 17:54:36,895 INFO L226 Difference]: Without dead ends: 5488 [2021-10-13 17:54:36,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:36,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2021-10-13 17:54:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4544. [2021-10-13 17:54:36,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4544 states, 4543 states have (on average 2.9315430332379484) internal successors, (13318), 4543 states have internal predecessors, (13318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 13318 transitions. [2021-10-13 17:54:36,968 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 13318 transitions. Word has length 38 [2021-10-13 17:54:36,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:36,969 INFO L470 AbstractCegarLoop]: Abstraction has 4544 states and 13318 transitions. [2021-10-13 17:54:36,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:36,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 13318 transitions. [2021-10-13 17:54:36,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:36,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:36,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:36,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-10-13 17:54:36,978 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:36,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:36,979 INFO L82 PathProgramCache]: Analyzing trace with hash 52754119, now seen corresponding path program 104 times [2021-10-13 17:54:36,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:36,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570502709] [2021-10-13 17:54:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:36,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:37,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:37,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570502709] [2021-10-13 17:54:37,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570502709] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:37,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:37,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:54:37,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751291248] [2021-10-13 17:54:37,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:54:37,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:54:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:54:37,073 INFO L87 Difference]: Start difference. First operand 4544 states and 13318 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:37,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:37,858 INFO L93 Difference]: Finished difference Result 6352 states and 17800 transitions. [2021-10-13 17:54:37,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 17:54:37,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:37,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:37,870 INFO L225 Difference]: With dead ends: 6352 [2021-10-13 17:54:37,871 INFO L226 Difference]: Without dead ends: 6336 [2021-10-13 17:54:37,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:54:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-10-13 17:54:37,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 4540. [2021-10-13 17:54:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4540 states, 4539 states have (on average 2.931482705441727) internal successors, (13306), 4539 states have internal predecessors, (13306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:37,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 13306 transitions. [2021-10-13 17:54:37,948 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 13306 transitions. Word has length 38 [2021-10-13 17:54:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:37,948 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 13306 transitions. [2021-10-13 17:54:37,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:37,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 13306 transitions. [2021-10-13 17:54:37,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:37,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:37,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:37,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-10-13 17:54:37,955 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:37,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:37,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1018059717, now seen corresponding path program 105 times [2021-10-13 17:54:37,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:37,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970120989] [2021-10-13 17:54:37,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:37,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:38,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:38,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970120989] [2021-10-13 17:54:38,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970120989] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:38,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:38,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:38,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797385457] [2021-10-13 17:54:38,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:38,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:38,068 INFO L87 Difference]: Start difference. First operand 4540 states and 13306 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:39,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:39,027 INFO L93 Difference]: Finished difference Result 6502 states and 18116 transitions. [2021-10-13 17:54:39,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-13 17:54:39,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:39,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:39,040 INFO L225 Difference]: With dead ends: 6502 [2021-10-13 17:54:39,041 INFO L226 Difference]: Without dead ends: 6466 [2021-10-13 17:54:39,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 323.9ms TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 17:54:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-10-13 17:54:39,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 4508. [2021-10-13 17:54:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 2.9345462613712003) internal successors, (13226), 4507 states have internal predecessors, (13226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 13226 transitions. [2021-10-13 17:54:39,123 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 13226 transitions. Word has length 38 [2021-10-13 17:54:39,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:39,123 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 13226 transitions. [2021-10-13 17:54:39,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:39,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 13226 transitions. [2021-10-13 17:54:39,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:39,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:39,130 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:39,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-10-13 17:54:39,130 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash -271805531, now seen corresponding path program 106 times [2021-10-13 17:54:39,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:39,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466489849] [2021-10-13 17:54:39,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:39,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:39,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:39,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466489849] [2021-10-13 17:54:39,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466489849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:39,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:39,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31803996] [2021-10-13 17:54:39,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:39,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:39,272 INFO L87 Difference]: Start difference. First operand 4508 states and 13226 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:40,157 INFO L93 Difference]: Finished difference Result 5630 states and 15767 transitions. [2021-10-13 17:54:40,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 17:54:40,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:40,169 INFO L225 Difference]: With dead ends: 5630 [2021-10-13 17:54:40,169 INFO L226 Difference]: Without dead ends: 5598 [2021-10-13 17:54:40,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 314.8ms TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:54:40,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2021-10-13 17:54:40,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 4520. [2021-10-13 17:54:40,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 4519 states have (on average 2.931179464483293) internal successors, (13246), 4519 states have internal predecessors, (13246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 13246 transitions. [2021-10-13 17:54:40,246 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 13246 transitions. Word has length 38 [2021-10-13 17:54:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:40,246 INFO L470 AbstractCegarLoop]: Abstraction has 4520 states and 13246 transitions. [2021-10-13 17:54:40,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 13246 transitions. [2021-10-13 17:54:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:40,253 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:40,253 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:40,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-10-13 17:54:40,253 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:40,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:40,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1604452597, now seen corresponding path program 107 times [2021-10-13 17:54:40,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:40,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25406267] [2021-10-13 17:54:40,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:40,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:40,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:40,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25406267] [2021-10-13 17:54:40,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25406267] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:40,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:40,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:40,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905455564] [2021-10-13 17:54:40,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:40,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:40,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:40,373 INFO L87 Difference]: Start difference. First operand 4520 states and 13246 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:41,038 INFO L93 Difference]: Finished difference Result 4878 states and 13964 transitions. [2021-10-13 17:54:41,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:54:41,038 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:41,048 INFO L225 Difference]: With dead ends: 4878 [2021-10-13 17:54:41,048 INFO L226 Difference]: Without dead ends: 4836 [2021-10-13 17:54:41,048 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 230.2ms TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:54:41,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-10-13 17:54:41,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4502. [2021-10-13 17:54:41,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4502 states, 4501 states have (on average 2.9320151077538323) internal successors, (13197), 4501 states have internal predecessors, (13197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 13197 transitions. [2021-10-13 17:54:41,119 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 13197 transitions. Word has length 38 [2021-10-13 17:54:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:41,120 INFO L470 AbstractCegarLoop]: Abstraction has 4502 states and 13197 transitions. [2021-10-13 17:54:41,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 13197 transitions. [2021-10-13 17:54:41,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:41,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:41,127 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:41,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-10-13 17:54:41,127 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:41,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:41,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1428244927, now seen corresponding path program 108 times [2021-10-13 17:54:41,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:41,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483763605] [2021-10-13 17:54:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:41,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:41,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:41,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483763605] [2021-10-13 17:54:41,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483763605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:41,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:41,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958927153] [2021-10-13 17:54:41,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:41,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:41,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:41,247 INFO L87 Difference]: Start difference. First operand 4502 states and 13197 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:42,031 INFO L93 Difference]: Finished difference Result 5554 states and 15625 transitions. [2021-10-13 17:54:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 17:54:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:42,042 INFO L225 Difference]: With dead ends: 5554 [2021-10-13 17:54:42,042 INFO L226 Difference]: Without dead ends: 5496 [2021-10-13 17:54:42,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 233.7ms TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:54:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-10-13 17:54:42,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4532. [2021-10-13 17:54:42,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4532 states, 4531 states have (on average 2.9251820790112557) internal successors, (13254), 4531 states have internal predecessors, (13254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:42,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 13254 transitions. [2021-10-13 17:54:42,116 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 13254 transitions. Word has length 38 [2021-10-13 17:54:42,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:42,117 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 13254 transitions. [2021-10-13 17:54:42,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 13254 transitions. [2021-10-13 17:54:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:42,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:42,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:42,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-10-13 17:54:42,123 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:42,124 INFO L82 PathProgramCache]: Analyzing trace with hash -265217083, now seen corresponding path program 109 times [2021-10-13 17:54:42,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:42,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024754150] [2021-10-13 17:54:42,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:42,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:42,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:42,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024754150] [2021-10-13 17:54:42,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024754150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:42,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:42,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:42,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175615469] [2021-10-13 17:54:42,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:42,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:42,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:42,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:42,229 INFO L87 Difference]: Start difference. First operand 4532 states and 13254 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:43,066 INFO L93 Difference]: Finished difference Result 6354 states and 17765 transitions. [2021-10-13 17:54:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:54:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:43,077 INFO L225 Difference]: With dead ends: 6354 [2021-10-13 17:54:43,077 INFO L226 Difference]: Without dead ends: 6310 [2021-10-13 17:54:43,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 258.7ms TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-10-13 17:54:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2021-10-13 17:54:43,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 4534. [2021-10-13 17:54:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4534 states, 4533 states have (on average 2.923670858151335) internal successors, (13253), 4533 states have internal predecessors, (13253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 13253 transitions. [2021-10-13 17:54:43,164 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 13253 transitions. Word has length 38 [2021-10-13 17:54:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:43,164 INFO L470 AbstractCegarLoop]: Abstraction has 4534 states and 13253 transitions. [2021-10-13 17:54:43,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 13253 transitions. [2021-10-13 17:54:43,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:43,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:43,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:43,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-10-13 17:54:43,171 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:43,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:43,171 INFO L82 PathProgramCache]: Analyzing trace with hash -939604293, now seen corresponding path program 110 times [2021-10-13 17:54:43,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:43,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033353122] [2021-10-13 17:54:43,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:43,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:43,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:43,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:43,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033353122] [2021-10-13 17:54:43,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033353122] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:43,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:43,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:43,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108324642] [2021-10-13 17:54:43,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:43,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:43,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:43,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:43,284 INFO L87 Difference]: Start difference. First operand 4534 states and 13253 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:44,325 INFO L93 Difference]: Finished difference Result 6512 states and 18110 transitions. [2021-10-13 17:54:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 17:54:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:44,337 INFO L225 Difference]: With dead ends: 6512 [2021-10-13 17:54:44,338 INFO L226 Difference]: Without dead ends: 6448 [2021-10-13 17:54:44,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 344.7ms TimeCoverageRelationStatistics Valid=281, Invalid=1051, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:54:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2021-10-13 17:54:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 4488. [2021-10-13 17:54:44,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4488 states, 4487 states have (on average 2.9277913973701803) internal successors, (13137), 4487 states have internal predecessors, (13137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 13137 transitions. [2021-10-13 17:54:44,415 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 13137 transitions. Word has length 38 [2021-10-13 17:54:44,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:44,415 INFO L470 AbstractCegarLoop]: Abstraction has 4488 states and 13137 transitions. [2021-10-13 17:54:44,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:44,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 13137 transitions. [2021-10-13 17:54:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:44,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:44,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:44,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-10-13 17:54:44,422 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1008812251, now seen corresponding path program 111 times [2021-10-13 17:54:44,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:44,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206778070] [2021-10-13 17:54:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:44,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:44,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:44,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206778070] [2021-10-13 17:54:44,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206778070] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:44,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:44,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:44,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225441851] [2021-10-13 17:54:44,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:44,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:44,526 INFO L87 Difference]: Start difference. First operand 4488 states and 13137 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:45,455 INFO L93 Difference]: Finished difference Result 5922 states and 16539 transitions. [2021-10-13 17:54:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-13 17:54:45,455 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:45,465 INFO L225 Difference]: With dead ends: 5922 [2021-10-13 17:54:45,465 INFO L226 Difference]: Without dead ends: 5860 [2021-10-13 17:54:45,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 329.1ms TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 17:54:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5860 states. [2021-10-13 17:54:45,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5860 to 4478. [2021-10-13 17:54:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 2.9251731069912887) internal successors, (13096), 4477 states have internal predecessors, (13096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 13096 transitions. [2021-10-13 17:54:45,539 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 13096 transitions. Word has length 38 [2021-10-13 17:54:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:45,539 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 13096 transitions. [2021-10-13 17:54:45,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:45,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 13096 transitions. [2021-10-13 17:54:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:45,546 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:45,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:45,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-10-13 17:54:45,547 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:45,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:45,547 INFO L82 PathProgramCache]: Analyzing trace with hash 768579887, now seen corresponding path program 112 times [2021-10-13 17:54:45,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:45,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771753623] [2021-10-13 17:54:45,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:45,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:45,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:45,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771753623] [2021-10-13 17:54:45,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771753623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:45,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:45,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:45,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023965711] [2021-10-13 17:54:45,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:45,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:45,656 INFO L87 Difference]: Start difference. First operand 4478 states and 13096 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:46,394 INFO L93 Difference]: Finished difference Result 5156 states and 14729 transitions. [2021-10-13 17:54:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 17:54:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:46,404 INFO L225 Difference]: With dead ends: 5156 [2021-10-13 17:54:46,405 INFO L226 Difference]: Without dead ends: 5066 [2021-10-13 17:54:46,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 225.5ms TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:54:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2021-10-13 17:54:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4446. [2021-10-13 17:54:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4446 states, 4445 states have (on average 2.9372328458942634) internal successors, (13056), 4445 states have internal predecessors, (13056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 13056 transitions. [2021-10-13 17:54:46,477 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 13056 transitions. Word has length 38 [2021-10-13 17:54:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:46,478 INFO L470 AbstractCegarLoop]: Abstraction has 4446 states and 13056 transitions. [2021-10-13 17:54:46,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 13056 transitions. [2021-10-13 17:54:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:46,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:46,484 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:46,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-10-13 17:54:46,485 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:46,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:46,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1973395073, now seen corresponding path program 113 times [2021-10-13 17:54:46,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:46,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780906113] [2021-10-13 17:54:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:46,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:46,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:46,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780906113] [2021-10-13 17:54:46,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780906113] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:46,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:46,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 17:54:46,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208610452] [2021-10-13 17:54:46,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 17:54:46,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 17:54:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 17:54:46,534 INFO L87 Difference]: Start difference. First operand 4446 states and 13056 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:46,655 INFO L93 Difference]: Finished difference Result 4238 states and 12242 transitions. [2021-10-13 17:54:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 17:54:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:46,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:46,663 INFO L225 Difference]: With dead ends: 4238 [2021-10-13 17:54:46,663 INFO L226 Difference]: Without dead ends: 4016 [2021-10-13 17:54:46,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:54:46,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-10-13 17:54:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3996. [2021-10-13 17:54:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3996 states, 3995 states have (on average 2.9226533166458073) internal successors, (11676), 3995 states have internal predecessors, (11676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 11676 transitions. [2021-10-13 17:54:46,726 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 11676 transitions. Word has length 38 [2021-10-13 17:54:46,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:46,727 INFO L470 AbstractCegarLoop]: Abstraction has 3996 states and 11676 transitions. [2021-10-13 17:54:46,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:46,727 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 11676 transitions. [2021-10-13 17:54:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:46,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:46,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:46,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-10-13 17:54:46,734 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:46,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:46,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1232562047, now seen corresponding path program 114 times [2021-10-13 17:54:46,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:46,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793127889] [2021-10-13 17:54:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:46,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:46,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:46,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793127889] [2021-10-13 17:54:46,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793127889] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:46,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:46,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 17:54:46,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545219129] [2021-10-13 17:54:46,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 17:54:46,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:46,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 17:54:46,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 17:54:46,920 INFO L87 Difference]: Start difference. First operand 3996 states and 11676 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:47,177 INFO L93 Difference]: Finished difference Result 4479 states and 12852 transitions. [2021-10-13 17:54:47,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 17:54:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:47,192 INFO L225 Difference]: With dead ends: 4479 [2021-10-13 17:54:47,192 INFO L226 Difference]: Without dead ends: 3968 [2021-10-13 17:54:47,192 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 100.9ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-13 17:54:47,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3960. [2021-10-13 17:54:47,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 3959 states have (on average 2.8860823440262693) internal successors, (11426), 3959 states have internal predecessors, (11426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 11426 transitions. [2021-10-13 17:54:47,312 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 11426 transitions. Word has length 38 [2021-10-13 17:54:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:47,313 INFO L470 AbstractCegarLoop]: Abstraction has 3960 states and 11426 transitions. [2021-10-13 17:54:47,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 11426 transitions. [2021-10-13 17:54:47,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:47,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:47,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:47,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-10-13 17:54:47,325 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:47,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash 861750979, now seen corresponding path program 115 times [2021-10-13 17:54:47,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:47,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607621668] [2021-10-13 17:54:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:47,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:47,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:47,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607621668] [2021-10-13 17:54:47,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607621668] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:47,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:47,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:47,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491727587] [2021-10-13 17:54:47,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:47,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:47,438 INFO L87 Difference]: Start difference. First operand 3960 states and 11426 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:47,964 INFO L93 Difference]: Finished difference Result 5240 states and 14504 transitions. [2021-10-13 17:54:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:54:47,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:47,974 INFO L225 Difference]: With dead ends: 5240 [2021-10-13 17:54:47,974 INFO L226 Difference]: Without dead ends: 5224 [2021-10-13 17:54:47,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:54:47,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2021-10-13 17:54:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4004. [2021-10-13 17:54:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4003 states have (on average 2.886585061204097) internal successors, (11555), 4003 states have internal predecessors, (11555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11555 transitions. [2021-10-13 17:54:48,045 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11555 transitions. Word has length 38 [2021-10-13 17:54:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:48,045 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11555 transitions. [2021-10-13 17:54:48,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11555 transitions. [2021-10-13 17:54:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:48,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:48,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:48,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-10-13 17:54:48,051 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:48,052 INFO L82 PathProgramCache]: Analyzing trace with hash 615714323, now seen corresponding path program 116 times [2021-10-13 17:54:48,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:48,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096761772] [2021-10-13 17:54:48,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:48,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:48,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:48,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:48,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:48,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096761772] [2021-10-13 17:54:48,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096761772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:48,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:48,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:48,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586024174] [2021-10-13 17:54:48,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:48,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:48,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:48,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:48,161 INFO L87 Difference]: Start difference. First operand 4004 states and 11555 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:48,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:48,780 INFO L93 Difference]: Finished difference Result 5582 states and 15422 transitions. [2021-10-13 17:54:48,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:54:48,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:48,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:48,790 INFO L225 Difference]: With dead ends: 5582 [2021-10-13 17:54:48,790 INFO L226 Difference]: Without dead ends: 5512 [2021-10-13 17:54:48,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 190.7ms TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:54:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2021-10-13 17:54:48,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 4102. [2021-10-13 17:54:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 4101 states have (on average 2.8810046330163375) internal successors, (11815), 4101 states have internal predecessors, (11815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 11815 transitions. [2021-10-13 17:54:48,862 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 11815 transitions. Word has length 38 [2021-10-13 17:54:48,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:48,862 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 11815 transitions. [2021-10-13 17:54:48,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 11815 transitions. [2021-10-13 17:54:48,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:48,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:48,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:48,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-10-13 17:54:48,868 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:48,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:48,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1777559399, now seen corresponding path program 117 times [2021-10-13 17:54:48,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:48,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353672850] [2021-10-13 17:54:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:48,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:48,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:48,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353672850] [2021-10-13 17:54:48,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353672850] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:48,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:48,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:48,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511223927] [2021-10-13 17:54:48,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:48,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:48,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:48,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:48,967 INFO L87 Difference]: Start difference. First operand 4102 states and 11815 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:49,374 INFO L93 Difference]: Finished difference Result 4618 states and 13001 transitions. [2021-10-13 17:54:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:54:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:49,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:49,384 INFO L225 Difference]: With dead ends: 4618 [2021-10-13 17:54:49,384 INFO L226 Difference]: Without dead ends: 4588 [2021-10-13 17:54:49,384 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 116.9ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:54:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2021-10-13 17:54:49,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4100. [2021-10-13 17:54:49,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 2.878750914857282) internal successors, (11800), 4099 states have internal predecessors, (11800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 11800 transitions. [2021-10-13 17:54:49,446 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 11800 transitions. Word has length 38 [2021-10-13 17:54:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:49,446 INFO L470 AbstractCegarLoop]: Abstraction has 4100 states and 11800 transitions. [2021-10-13 17:54:49,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 11800 transitions. [2021-10-13 17:54:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:49,452 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:49,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:49,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-10-13 17:54:49,453 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:49,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1554609641, now seen corresponding path program 118 times [2021-10-13 17:54:49,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:49,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793923059] [2021-10-13 17:54:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:49,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:49,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:49,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793923059] [2021-10-13 17:54:49,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793923059] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:49,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:49,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:49,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573106906] [2021-10-13 17:54:49,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:49,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:49,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:49,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:49,552 INFO L87 Difference]: Start difference. First operand 4100 states and 11800 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:49,956 INFO L93 Difference]: Finished difference Result 4956 states and 13914 transitions. [2021-10-13 17:54:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:54:49,956 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:49,964 INFO L225 Difference]: With dead ends: 4956 [2021-10-13 17:54:49,965 INFO L226 Difference]: Without dead ends: 4858 [2021-10-13 17:54:49,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:54:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-10-13 17:54:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4082. [2021-10-13 17:54:50,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4082 states, 4081 states have (on average 2.8791962754226903) internal successors, (11750), 4081 states have internal predecessors, (11750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 11750 transitions. [2021-10-13 17:54:50,028 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 11750 transitions. Word has length 38 [2021-10-13 17:54:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:50,028 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 11750 transitions. [2021-10-13 17:54:50,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 11750 transitions. [2021-10-13 17:54:50,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:50,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:50,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:50,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-10-13 17:54:50,034 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:50,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1360091997, now seen corresponding path program 119 times [2021-10-13 17:54:50,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:50,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123504178] [2021-10-13 17:54:50,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:50,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:50,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:50,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123504178] [2021-10-13 17:54:50,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123504178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:50,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:50,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:50,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184859220] [2021-10-13 17:54:50,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:50,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:50,125 INFO L87 Difference]: Start difference. First operand 4082 states and 11750 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:50,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:50,570 INFO L93 Difference]: Finished difference Result 5300 states and 14677 transitions. [2021-10-13 17:54:50,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:54:50,571 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:50,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:50,579 INFO L225 Difference]: With dead ends: 5300 [2021-10-13 17:54:50,580 INFO L226 Difference]: Without dead ends: 5292 [2021-10-13 17:54:50,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 130.1ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:54:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-10-13 17:54:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 4086. [2021-10-13 17:54:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4085 states have (on average 2.878824969400245) internal successors, (11760), 4085 states have internal predecessors, (11760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11760 transitions. [2021-10-13 17:54:50,646 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11760 transitions. Word has length 38 [2021-10-13 17:54:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:50,647 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11760 transitions. [2021-10-13 17:54:50,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:50,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11760 transitions. [2021-10-13 17:54:50,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:50,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:50,653 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:50,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-10-13 17:54:50,653 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:50,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1341418813, now seen corresponding path program 120 times [2021-10-13 17:54:50,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:50,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214073872] [2021-10-13 17:54:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:50,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:50,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:50,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:50,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214073872] [2021-10-13 17:54:50,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214073872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:50,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:50,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:50,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103248349] [2021-10-13 17:54:50,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:50,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:50,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:50,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:50,739 INFO L87 Difference]: Start difference. First operand 4086 states and 11760 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:51,090 INFO L93 Difference]: Finished difference Result 4408 states and 12546 transitions. [2021-10-13 17:54:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:54:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:51,099 INFO L225 Difference]: With dead ends: 4408 [2021-10-13 17:54:51,099 INFO L226 Difference]: Without dead ends: 4392 [2021-10-13 17:54:51,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:54:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-10-13 17:54:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4104. [2021-10-13 17:54:51,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 4103 states have (on average 2.8781379478430416) internal successors, (11809), 4103 states have internal predecessors, (11809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 11809 transitions. [2021-10-13 17:54:51,161 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 11809 transitions. Word has length 38 [2021-10-13 17:54:51,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:51,161 INFO L470 AbstractCegarLoop]: Abstraction has 4104 states and 11809 transitions. [2021-10-13 17:54:51,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 11809 transitions. [2021-10-13 17:54:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:51,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:51,168 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:51,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-10-13 17:54:51,168 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash 590782761, now seen corresponding path program 121 times [2021-10-13 17:54:51,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:51,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695595081] [2021-10-13 17:54:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:51,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:51,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:51,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695595081] [2021-10-13 17:54:51,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695595081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:51,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:51,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:51,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998489135] [2021-10-13 17:54:51,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:51,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:51,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:51,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:51,252 INFO L87 Difference]: Start difference. First operand 4104 states and 11809 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:51,564 INFO L93 Difference]: Finished difference Result 4358 states and 12418 transitions. [2021-10-13 17:54:51,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:54:51,564 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:51,572 INFO L225 Difference]: With dead ends: 4358 [2021-10-13 17:54:51,572 INFO L226 Difference]: Without dead ends: 4328 [2021-10-13 17:54:51,572 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:54:51,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2021-10-13 17:54:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4086. [2021-10-13 17:54:51,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4085 states have (on average 2.8783353733170136) internal successors, (11758), 4085 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11758 transitions. [2021-10-13 17:54:51,633 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11758 transitions. Word has length 38 [2021-10-13 17:54:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:51,633 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11758 transitions. [2021-10-13 17:54:51,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11758 transitions. [2021-10-13 17:54:51,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:51,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:51,639 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:51,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-10-13 17:54:51,639 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:51,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:51,639 INFO L82 PathProgramCache]: Analyzing trace with hash -343185135, now seen corresponding path program 122 times [2021-10-13 17:54:51,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:51,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693430140] [2021-10-13 17:54:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:51,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:51,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:51,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693430140] [2021-10-13 17:54:51,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693430140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:51,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:51,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:51,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200532347] [2021-10-13 17:54:51,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:51,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:51,766 INFO L87 Difference]: Start difference. First operand 4086 states and 11758 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:52,192 INFO L93 Difference]: Finished difference Result 4360 states and 12413 transitions. [2021-10-13 17:54:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:54:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:52,200 INFO L225 Difference]: With dead ends: 4360 [2021-10-13 17:54:52,200 INFO L226 Difference]: Without dead ends: 4336 [2021-10-13 17:54:52,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 169.1ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:52,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-10-13 17:54:52,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4086. [2021-10-13 17:54:52,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4086 states, 4085 states have (on average 2.877845777233782) internal successors, (11756), 4085 states have internal predecessors, (11756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11756 transitions. [2021-10-13 17:54:52,266 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11756 transitions. Word has length 38 [2021-10-13 17:54:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:52,266 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11756 transitions. [2021-10-13 17:54:52,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11756 transitions. [2021-10-13 17:54:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:52,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:52,272 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:52,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-10-13 17:54:52,273 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:52,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:52,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1649210443, now seen corresponding path program 123 times [2021-10-13 17:54:52,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:52,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224552582] [2021-10-13 17:54:52,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:52,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:52,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:52,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224552582] [2021-10-13 17:54:52,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224552582] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:52,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:52,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:52,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047391320] [2021-10-13 17:54:52,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:52,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:52,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:52,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:52,414 INFO L87 Difference]: Start difference. First operand 4086 states and 11756 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:53,027 INFO L93 Difference]: Finished difference Result 4548 states and 12795 transitions. [2021-10-13 17:54:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:53,028 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:53,036 INFO L225 Difference]: With dead ends: 4548 [2021-10-13 17:54:53,036 INFO L226 Difference]: Without dead ends: 4486 [2021-10-13 17:54:53,037 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 243.0ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:54:53,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-10-13 17:54:53,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4154. [2021-10-13 17:54:53,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 2.873344570190224) internal successors, (11933), 4153 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11933 transitions. [2021-10-13 17:54:53,101 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11933 transitions. Word has length 38 [2021-10-13 17:54:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:53,101 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11933 transitions. [2021-10-13 17:54:53,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11933 transitions. [2021-10-13 17:54:53,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:53,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:53,131 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:53,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-10-13 17:54:53,132 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:53,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:53,132 INFO L82 PathProgramCache]: Analyzing trace with hash -349614713, now seen corresponding path program 124 times [2021-10-13 17:54:53,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:53,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957851306] [2021-10-13 17:54:53,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:53,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:53,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:53,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957851306] [2021-10-13 17:54:53,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957851306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:53,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:53,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:53,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971847755] [2021-10-13 17:54:53,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:53,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:53,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:53,239 INFO L87 Difference]: Start difference. First operand 4154 states and 11933 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:53,747 INFO L93 Difference]: Finished difference Result 5260 states and 14534 transitions. [2021-10-13 17:54:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:53,758 INFO L225 Difference]: With dead ends: 5260 [2021-10-13 17:54:53,759 INFO L226 Difference]: Without dead ends: 5196 [2021-10-13 17:54:53,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 153.2ms TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:53,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2021-10-13 17:54:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4154. [2021-10-13 17:54:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 2.873344570190224) internal successors, (11933), 4153 states have internal predecessors, (11933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11933 transitions. [2021-10-13 17:54:53,840 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11933 transitions. Word has length 38 [2021-10-13 17:54:53,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:53,840 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11933 transitions. [2021-10-13 17:54:53,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:53,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11933 transitions. [2021-10-13 17:54:53,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:53,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:53,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:53,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-10-13 17:54:53,846 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:53,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1919714835, now seen corresponding path program 125 times [2021-10-13 17:54:53,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:53,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297404105] [2021-10-13 17:54:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:53,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:53,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:53,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297404105] [2021-10-13 17:54:53,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297404105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:53,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:53,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:53,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138933744] [2021-10-13 17:54:53,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:53,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:53,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:53,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:53,949 INFO L87 Difference]: Start difference. First operand 4154 states and 11933 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:54,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:54,399 INFO L93 Difference]: Finished difference Result 4514 states and 12701 transitions. [2021-10-13 17:54:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:54:54,399 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:54,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:54,407 INFO L225 Difference]: With dead ends: 4514 [2021-10-13 17:54:54,407 INFO L226 Difference]: Without dead ends: 4424 [2021-10-13 17:54:54,407 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 157.5ms TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2021-10-13 17:54:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 4094. [2021-10-13 17:54:54,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4094 states, 4093 states have (on average 2.8756413388712434) internal successors, (11770), 4093 states have internal predecessors, (11770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11770 transitions. [2021-10-13 17:54:54,471 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11770 transitions. Word has length 38 [2021-10-13 17:54:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:54,471 INFO L470 AbstractCegarLoop]: Abstraction has 4094 states and 11770 transitions. [2021-10-13 17:54:54,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11770 transitions. [2021-10-13 17:54:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:54,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:54,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:54,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-10-13 17:54:54,478 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:54,478 INFO L82 PathProgramCache]: Analyzing trace with hash 588056673, now seen corresponding path program 126 times [2021-10-13 17:54:54,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:54,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085539476] [2021-10-13 17:54:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:54,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:54,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:54,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085539476] [2021-10-13 17:54:54,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085539476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:54,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:54,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:54:54,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025768151] [2021-10-13 17:54:54,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:54:54,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:54,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:54:54,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:54:54,587 INFO L87 Difference]: Start difference. First operand 4094 states and 11770 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:55,108 INFO L93 Difference]: Finished difference Result 4482 states and 12612 transitions. [2021-10-13 17:54:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:55,108 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:55,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:55,116 INFO L225 Difference]: With dead ends: 4482 [2021-10-13 17:54:55,116 INFO L226 Difference]: Without dead ends: 4410 [2021-10-13 17:54:55,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 186.0ms TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:54:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2021-10-13 17:54:55,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4088. [2021-10-13 17:54:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 2.876682162955713) internal successors, (11757), 4087 states have internal predecessors, (11757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11757 transitions. [2021-10-13 17:54:55,180 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11757 transitions. Word has length 38 [2021-10-13 17:54:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:55,180 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11757 transitions. [2021-10-13 17:54:55,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11757 transitions. [2021-10-13 17:54:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:55,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:55,187 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:55,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-10-13 17:54:55,188 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:55,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:55,188 INFO L82 PathProgramCache]: Analyzing trace with hash 879986273, now seen corresponding path program 127 times [2021-10-13 17:54:55,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:55,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593099534] [2021-10-13 17:54:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:55,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:55,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:55,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593099534] [2021-10-13 17:54:55,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593099534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:55,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:55,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:55,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876076818] [2021-10-13 17:54:55,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:55,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:55,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:55,302 INFO L87 Difference]: Start difference. First operand 4088 states and 11757 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:55,747 INFO L93 Difference]: Finished difference Result 4992 states and 13908 transitions. [2021-10-13 17:54:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:54:55,748 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:55,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:55,757 INFO L225 Difference]: With dead ends: 4992 [2021-10-13 17:54:55,758 INFO L226 Difference]: Without dead ends: 4984 [2021-10-13 17:54:55,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 147.6ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:54:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2021-10-13 17:54:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 4092. [2021-10-13 17:54:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4091 states have (on average 2.876313859692007) internal successors, (11767), 4091 states have internal predecessors, (11767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 11767 transitions. [2021-10-13 17:54:55,831 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 11767 transitions. Word has length 38 [2021-10-13 17:54:55,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:55,831 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 11767 transitions. [2021-10-13 17:54:55,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 11767 transitions. [2021-10-13 17:54:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:55,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:55,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:55,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-10-13 17:54:55,839 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:55,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash 898659457, now seen corresponding path program 128 times [2021-10-13 17:54:55,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:55,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046024599] [2021-10-13 17:54:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:55,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:55,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:55,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046024599] [2021-10-13 17:54:55,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046024599] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:55,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:55,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:55,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89989149] [2021-10-13 17:54:55,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:55,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:55,926 INFO L87 Difference]: Start difference. First operand 4092 states and 11767 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:56,321 INFO L93 Difference]: Finished difference Result 4460 states and 12652 transitions. [2021-10-13 17:54:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:54:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:56,333 INFO L225 Difference]: With dead ends: 4460 [2021-10-13 17:54:56,333 INFO L226 Difference]: Without dead ends: 4444 [2021-10-13 17:54:56,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 142.3ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:54:56,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-10-13 17:54:56,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4110. [2021-10-13 17:54:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4110 states, 4109 states have (on average 2.8756388415672913) internal successors, (11816), 4109 states have internal predecessors, (11816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 11816 transitions. [2021-10-13 17:54:56,432 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 11816 transitions. Word has length 38 [2021-10-13 17:54:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:56,432 INFO L470 AbstractCegarLoop]: Abstraction has 4110 states and 11816 transitions. [2021-10-13 17:54:56,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 11816 transitions. [2021-10-13 17:54:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:56,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:56,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:56,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-10-13 17:54:56,442 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:56,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1464106265, now seen corresponding path program 129 times [2021-10-13 17:54:56,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:56,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917764549] [2021-10-13 17:54:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:56,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:56,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:56,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917764549] [2021-10-13 17:54:56,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917764549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:56,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:56,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:54:56,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528118414] [2021-10-13 17:54:56,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:54:56,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:56,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:54:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:54:56,539 INFO L87 Difference]: Start difference. First operand 4110 states and 11816 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:56,884 INFO L93 Difference]: Finished difference Result 4410 states and 12524 transitions. [2021-10-13 17:54:56,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:54:56,884 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:56,894 INFO L225 Difference]: With dead ends: 4410 [2021-10-13 17:54:56,894 INFO L226 Difference]: Without dead ends: 4380 [2021-10-13 17:54:56,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 141.7ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:54:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2021-10-13 17:54:56,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 4092. [2021-10-13 17:54:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4092 states, 4091 states have (on average 2.875824981667074) internal successors, (11765), 4091 states have internal predecessors, (11765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 11765 transitions. [2021-10-13 17:54:56,965 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 11765 transitions. Word has length 38 [2021-10-13 17:54:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:56,965 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 11765 transitions. [2021-10-13 17:54:56,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:56,965 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 11765 transitions. [2021-10-13 17:54:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:56,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:56,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:56,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-10-13 17:54:56,972 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:56,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:56,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1896893135, now seen corresponding path program 130 times [2021-10-13 17:54:56,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:56,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659945174] [2021-10-13 17:54:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:56,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:57,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:57,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659945174] [2021-10-13 17:54:57,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659945174] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:57,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:57,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:57,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167912819] [2021-10-13 17:54:57,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:57,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:57,098 INFO L87 Difference]: Start difference. First operand 4092 states and 11765 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:57,581 INFO L93 Difference]: Finished difference Result 4420 states and 12535 transitions. [2021-10-13 17:54:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:54:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:57,589 INFO L225 Difference]: With dead ends: 4420 [2021-10-13 17:54:57,590 INFO L226 Difference]: Without dead ends: 4396 [2021-10-13 17:54:57,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 201.9ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2021-10-13 17:54:57,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4088. [2021-10-13 17:54:57,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 2.876192806459506) internal successors, (11755), 4087 states have internal predecessors, (11755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:57,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11755 transitions. [2021-10-13 17:54:57,652 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11755 transitions. Word has length 38 [2021-10-13 17:54:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:57,653 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11755 transitions. [2021-10-13 17:54:57,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11755 transitions. [2021-10-13 17:54:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:57,658 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:57,659 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:57,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-10-13 17:54:57,659 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:57,659 INFO L82 PathProgramCache]: Analyzing trace with hash 691089211, now seen corresponding path program 131 times [2021-10-13 17:54:57,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:57,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155151211] [2021-10-13 17:54:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:57,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:57,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:57,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:57,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155151211] [2021-10-13 17:54:57,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155151211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:57,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:57,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:57,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250526360] [2021-10-13 17:54:57,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:57,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:57,779 INFO L87 Difference]: Start difference. First operand 4088 states and 11755 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:58,084 INFO L93 Difference]: Finished difference Result 4144 states and 11853 transitions. [2021-10-13 17:54:58,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:54:58,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:58,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:58,091 INFO L225 Difference]: With dead ends: 4144 [2021-10-13 17:54:58,092 INFO L226 Difference]: Without dead ends: 4110 [2021-10-13 17:54:58,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 144.8ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:54:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-10-13 17:54:58,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 4088. [2021-10-13 17:54:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 2.8737460239784682) internal successors, (11745), 4087 states have internal predecessors, (11745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11745 transitions. [2021-10-13 17:54:58,150 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11745 transitions. Word has length 38 [2021-10-13 17:54:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:58,150 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11745 transitions. [2021-10-13 17:54:58,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11745 transitions. [2021-10-13 17:54:58,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:58,156 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:58,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:58,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-10-13 17:54:58,156 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:58,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:58,157 INFO L82 PathProgramCache]: Analyzing trace with hash -605407197, now seen corresponding path program 132 times [2021-10-13 17:54:58,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:58,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478686688] [2021-10-13 17:54:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:58,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:58,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:58,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478686688] [2021-10-13 17:54:58,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478686688] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:58,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:58,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:58,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995570260] [2021-10-13 17:54:58,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:58,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:58,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:58,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:58,248 INFO L87 Difference]: Start difference. First operand 4088 states and 11745 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:58,741 INFO L93 Difference]: Finished difference Result 4542 states and 12768 transitions. [2021-10-13 17:54:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:54:58,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:58,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:58,750 INFO L225 Difference]: With dead ends: 4542 [2021-10-13 17:54:58,750 INFO L226 Difference]: Without dead ends: 4480 [2021-10-13 17:54:58,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:54:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2021-10-13 17:54:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4156. [2021-10-13 17:54:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 4155 states have (on average 2.8693140794223826) internal successors, (11922), 4155 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 11922 transitions. [2021-10-13 17:54:58,812 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 11922 transitions. Word has length 38 [2021-10-13 17:54:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:58,813 INFO L470 AbstractCegarLoop]: Abstraction has 4156 states and 11922 transitions. [2021-10-13 17:54:58,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 11922 transitions. [2021-10-13 17:54:58,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:58,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:58,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:58,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-10-13 17:54:58,819 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:58,819 INFO L82 PathProgramCache]: Analyzing trace with hash 694188533, now seen corresponding path program 133 times [2021-10-13 17:54:58,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:58,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919602259] [2021-10-13 17:54:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:58,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:58,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:58,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:58,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919602259] [2021-10-13 17:54:58,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919602259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:58,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:58,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:58,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202897159] [2021-10-13 17:54:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:58,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:58,924 INFO L87 Difference]: Start difference. First operand 4156 states and 11922 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:54:59,509 INFO L93 Difference]: Finished difference Result 5064 states and 13989 transitions. [2021-10-13 17:54:59,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:54:59,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:54:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:54:59,518 INFO L225 Difference]: With dead ends: 5064 [2021-10-13 17:54:59,518 INFO L226 Difference]: Without dead ends: 5000 [2021-10-13 17:54:59,519 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 168.1ms TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:54:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2021-10-13 17:54:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4156. [2021-10-13 17:54:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4156 states, 4155 states have (on average 2.8693140794223826) internal successors, (11922), 4155 states have internal predecessors, (11922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:59,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 11922 transitions. [2021-10-13 17:54:59,613 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 11922 transitions. Word has length 38 [2021-10-13 17:54:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:54:59,613 INFO L470 AbstractCegarLoop]: Abstraction has 4156 states and 11922 transitions. [2021-10-13 17:54:59,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:54:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 11922 transitions. [2021-10-13 17:54:59,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:54:59,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:54:59,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:54:59,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-10-13 17:54:59,619 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:54:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:54:59,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1331449215, now seen corresponding path program 134 times [2021-10-13 17:54:59,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:54:59,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719318304] [2021-10-13 17:54:59,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:54:59,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:54:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:54:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:54:59,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:54:59,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719318304] [2021-10-13 17:54:59,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719318304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:54:59,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:54:59,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:54:59,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977189259] [2021-10-13 17:54:59,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:54:59,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:54:59,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:54:59,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:54:59,721 INFO L87 Difference]: Start difference. First operand 4156 states and 11922 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:00,280 INFO L93 Difference]: Finished difference Result 4566 states and 12801 transitions. [2021-10-13 17:55:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:00,289 INFO L225 Difference]: With dead ends: 4566 [2021-10-13 17:55:00,289 INFO L226 Difference]: Without dead ends: 4476 [2021-10-13 17:55:00,290 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-10-13 17:55:00,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4096. [2021-10-13 17:55:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4096 states, 4095 states have (on average 2.8715506715506716) internal successors, (11759), 4095 states have internal predecessors, (11759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:00,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 11759 transitions. [2021-10-13 17:55:00,350 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 11759 transitions. Word has length 38 [2021-10-13 17:55:00,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:00,350 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 11759 transitions. [2021-10-13 17:55:00,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:00,350 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 11759 transitions. [2021-10-13 17:55:00,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:00,356 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:00,356 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:00,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-10-13 17:55:00,356 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:00,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:00,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1631859919, now seen corresponding path program 135 times [2021-10-13 17:55:00,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:00,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503613757] [2021-10-13 17:55:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:00,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:00,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:00,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:00,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503613757] [2021-10-13 17:55:00,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503613757] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:00,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:00,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:00,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822199050] [2021-10-13 17:55:00,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:00,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:00,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:00,473 INFO L87 Difference]: Start difference. First operand 4096 states and 11759 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:01,076 INFO L93 Difference]: Finished difference Result 4534 states and 12712 transitions. [2021-10-13 17:55:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:55:01,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:01,084 INFO L225 Difference]: With dead ends: 4534 [2021-10-13 17:55:01,084 INFO L226 Difference]: Without dead ends: 4466 [2021-10-13 17:55:01,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 235.7ms TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:01,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2021-10-13 17:55:01,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 4088. [2021-10-13 17:55:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4088 states, 4087 states have (on average 2.8727673109860534) internal successors, (11741), 4087 states have internal predecessors, (11741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11741 transitions. [2021-10-13 17:55:01,147 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11741 transitions. Word has length 38 [2021-10-13 17:55:01,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:01,147 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11741 transitions. [2021-10-13 17:55:01,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11741 transitions. [2021-10-13 17:55:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:01,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:01,153 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:01,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-10-13 17:55:01,153 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:01,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:01,153 INFO L82 PathProgramCache]: Analyzing trace with hash -505185813, now seen corresponding path program 136 times [2021-10-13 17:55:01,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:01,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748165192] [2021-10-13 17:55:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:01,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:01,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:01,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:01,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748165192] [2021-10-13 17:55:01,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748165192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:01,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:01,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:01,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289191985] [2021-10-13 17:55:01,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:01,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:01,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:01,266 INFO L87 Difference]: Start difference. First operand 4088 states and 11741 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:01,648 INFO L93 Difference]: Finished difference Result 4258 states and 12062 transitions. [2021-10-13 17:55:01,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:01,648 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:01,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:01,656 INFO L225 Difference]: With dead ends: 4258 [2021-10-13 17:55:01,656 INFO L226 Difference]: Without dead ends: 4164 [2021-10-13 17:55:01,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 162.1ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:01,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2021-10-13 17:55:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4064. [2021-10-13 17:55:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 4063 states have (on average 2.8739847403396506) internal successors, (11677), 4063 states have internal predecessors, (11677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 11677 transitions. [2021-10-13 17:55:01,722 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 11677 transitions. Word has length 38 [2021-10-13 17:55:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:01,722 INFO L470 AbstractCegarLoop]: Abstraction has 4064 states and 11677 transitions. [2021-10-13 17:55:01,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 11677 transitions. [2021-10-13 17:55:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:01,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:01,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:01,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-10-13 17:55:01,729 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:01,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash 62947225, now seen corresponding path program 137 times [2021-10-13 17:55:01,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:01,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44275813] [2021-10-13 17:55:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:01,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:01,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:01,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:01,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44275813] [2021-10-13 17:55:01,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44275813] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:01,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:01,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:01,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43971788] [2021-10-13 17:55:01,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:01,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:01,837 INFO L87 Difference]: Start difference. First operand 4064 states and 11677 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:02,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:02,353 INFO L93 Difference]: Finished difference Result 5600 states and 15444 transitions. [2021-10-13 17:55:02,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:02,354 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:02,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:02,364 INFO L225 Difference]: With dead ends: 5600 [2021-10-13 17:55:02,365 INFO L226 Difference]: Without dead ends: 5592 [2021-10-13 17:55:02,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-13 17:55:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 4080. [2021-10-13 17:55:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 2.8739887227261582) internal successors, (11723), 4079 states have internal predecessors, (11723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 11723 transitions. [2021-10-13 17:55:02,447 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 11723 transitions. Word has length 38 [2021-10-13 17:55:02,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:02,447 INFO L470 AbstractCegarLoop]: Abstraction has 4080 states and 11723 transitions. [2021-10-13 17:55:02,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 11723 transitions. [2021-10-13 17:55:02,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:02,453 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:02,453 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:02,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-10-13 17:55:02,453 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:02,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash -183089431, now seen corresponding path program 138 times [2021-10-13 17:55:02,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:02,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546414908] [2021-10-13 17:55:02,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:02,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:02,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:02,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546414908] [2021-10-13 17:55:02,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546414908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:02,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:02,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:02,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515563302] [2021-10-13 17:55:02,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:02,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:02,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:02,565 INFO L87 Difference]: Start difference. First operand 4080 states and 11723 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:03,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:03,261 INFO L93 Difference]: Finished difference Result 5854 states and 16098 transitions. [2021-10-13 17:55:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:03,273 INFO L225 Difference]: With dead ends: 5854 [2021-10-13 17:55:03,274 INFO L226 Difference]: Without dead ends: 5832 [2021-10-13 17:55:03,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2021-10-13 17:55:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4076. [2021-10-13 17:55:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 4075 states have (on average 2.8741104294478528) internal successors, (11712), 4075 states have internal predecessors, (11712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:03,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 11712 transitions. [2021-10-13 17:55:03,348 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 11712 transitions. Word has length 38 [2021-10-13 17:55:03,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:03,348 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 11712 transitions. [2021-10-13 17:55:03,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 11712 transitions. [2021-10-13 17:55:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:03,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:03,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:03,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-10-13 17:55:03,354 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash -953445929, now seen corresponding path program 139 times [2021-10-13 17:55:03,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:03,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157061624] [2021-10-13 17:55:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:03,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:03,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:03,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157061624] [2021-10-13 17:55:03,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157061624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:03,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:03,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:03,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871962199] [2021-10-13 17:55:03,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:03,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:03,460 INFO L87 Difference]: Start difference. First operand 4076 states and 11712 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:04,092 INFO L93 Difference]: Finished difference Result 5432 states and 14848 transitions. [2021-10-13 17:55:04,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:55:04,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:04,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:04,102 INFO L225 Difference]: With dead ends: 5432 [2021-10-13 17:55:04,102 INFO L226 Difference]: Without dead ends: 5416 [2021-10-13 17:55:04,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:04,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2021-10-13 17:55:04,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4098. [2021-10-13 17:55:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 2.8740541859897486) internal successors, (11775), 4097 states have internal predecessors, (11775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 11775 transitions. [2021-10-13 17:55:04,169 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 11775 transitions. Word has length 38 [2021-10-13 17:55:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:04,169 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 11775 transitions. [2021-10-13 17:55:04,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,169 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 11775 transitions. [2021-10-13 17:55:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:04,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:04,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:04,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-10-13 17:55:04,175 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:04,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:04,175 INFO L82 PathProgramCache]: Analyzing trace with hash 978755645, now seen corresponding path program 140 times [2021-10-13 17:55:04,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:04,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104733123] [2021-10-13 17:55:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:04,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:04,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:04,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104733123] [2021-10-13 17:55:04,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104733123] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:04,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:04,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:04,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406138777] [2021-10-13 17:55:04,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:04,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:04,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:04,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:04,283 INFO L87 Difference]: Start difference. First operand 4098 states and 11775 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:04,762 INFO L93 Difference]: Finished difference Result 4706 states and 13171 transitions. [2021-10-13 17:55:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:04,763 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:04,771 INFO L225 Difference]: With dead ends: 4706 [2021-10-13 17:55:04,771 INFO L226 Difference]: Without dead ends: 4676 [2021-10-13 17:55:04,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 171.8ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2021-10-13 17:55:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4076. [2021-10-13 17:55:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4076 states, 4075 states have (on average 2.872638036809816) internal successors, (11706), 4075 states have internal predecessors, (11706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 11706 transitions. [2021-10-13 17:55:04,836 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 11706 transitions. Word has length 38 [2021-10-13 17:55:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:04,837 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 11706 transitions. [2021-10-13 17:55:04,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 11706 transitions. [2021-10-13 17:55:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:04,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:04,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:04,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-10-13 17:55:04,844 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:04,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:04,844 INFO L82 PathProgramCache]: Analyzing trace with hash -236684329, now seen corresponding path program 141 times [2021-10-13 17:55:04,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:04,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552620963] [2021-10-13 17:55:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:04,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:04,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:04,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:04,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552620963] [2021-10-13 17:55:04,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552620963] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:04,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:04,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:04,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186753771] [2021-10-13 17:55:04,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:04,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:04,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:04,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:04,954 INFO L87 Difference]: Start difference. First operand 4076 states and 11706 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:05,744 INFO L93 Difference]: Finished difference Result 5784 states and 15784 transitions. [2021-10-13 17:55:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 17:55:05,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:05,757 INFO L225 Difference]: With dead ends: 5784 [2021-10-13 17:55:05,757 INFO L226 Difference]: Without dead ends: 5718 [2021-10-13 17:55:05,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 231.4ms TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:55:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-10-13 17:55:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4154. [2021-10-13 17:55:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 2.866843245846376) internal successors, (11906), 4153 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11906 transitions. [2021-10-13 17:55:05,841 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11906 transitions. Word has length 38 [2021-10-13 17:55:05,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:05,841 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11906 transitions. [2021-10-13 17:55:05,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11906 transitions. [2021-10-13 17:55:05,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:05,849 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:05,849 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:05,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-10-13 17:55:05,850 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:05,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:05,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1941553901, now seen corresponding path program 142 times [2021-10-13 17:55:05,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:05,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689985738] [2021-10-13 17:55:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:05,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:05,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:05,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689985738] [2021-10-13 17:55:05,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689985738] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:05,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:05,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:05,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816373926] [2021-10-13 17:55:05,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:05,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:05,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:05,964 INFO L87 Difference]: Start difference. First operand 4154 states and 11906 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:06,533 INFO L93 Difference]: Finished difference Result 5026 states and 14039 transitions. [2021-10-13 17:55:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:06,542 INFO L225 Difference]: With dead ends: 5026 [2021-10-13 17:55:06,542 INFO L226 Difference]: Without dead ends: 4928 [2021-10-13 17:55:06,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 194.2ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:06,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-10-13 17:55:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4064. [2021-10-13 17:55:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4064 states, 4063 states have (on average 2.873000246123554) internal successors, (11673), 4063 states have internal predecessors, (11673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 11673 transitions. [2021-10-13 17:55:06,636 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 11673 transitions. Word has length 38 [2021-10-13 17:55:06,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:06,636 INFO L470 AbstractCegarLoop]: Abstraction has 4064 states and 11673 transitions. [2021-10-13 17:55:06,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 11673 transitions. [2021-10-13 17:55:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:06,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:06,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:06,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-10-13 17:55:06,643 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:06,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:06,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1485872565, now seen corresponding path program 143 times [2021-10-13 17:55:06,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:06,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884108202] [2021-10-13 17:55:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:06,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:06,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:06,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:06,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884108202] [2021-10-13 17:55:06,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884108202] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:06,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:06,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:55:06,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462629169] [2021-10-13 17:55:06,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:55:06,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:55:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:55:06,732 INFO L87 Difference]: Start difference. First operand 4064 states and 11673 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:07,022 INFO L93 Difference]: Finished difference Result 3392 states and 9302 transitions. [2021-10-13 17:55:07,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:55:07,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:07,027 INFO L225 Difference]: With dead ends: 3392 [2021-10-13 17:55:07,028 INFO L226 Difference]: Without dead ends: 2840 [2021-10-13 17:55:07,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 77.1ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-13 17:55:07,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-10-13 17:55:07,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2562. [2021-10-13 17:55:07,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 2.834439672003124) internal successors, (7259), 2561 states have internal predecessors, (7259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7259 transitions. [2021-10-13 17:55:07,066 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7259 transitions. Word has length 38 [2021-10-13 17:55:07,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:07,066 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 7259 transitions. [2021-10-13 17:55:07,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7259 transitions. [2021-10-13 17:55:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:07,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:07,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:07,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-10-13 17:55:07,070 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:07,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:07,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1978201605, now seen corresponding path program 144 times [2021-10-13 17:55:07,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:07,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829809353] [2021-10-13 17:55:07,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:07,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:07,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:07,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829809353] [2021-10-13 17:55:07,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829809353] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:07,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:07,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:07,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811570824] [2021-10-13 17:55:07,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:07,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:07,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:07,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:07,176 INFO L87 Difference]: Start difference. First operand 2562 states and 7259 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:07,654 INFO L93 Difference]: Finished difference Result 2928 states and 8086 transitions. [2021-10-13 17:55:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:07,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:07,659 INFO L225 Difference]: With dead ends: 2928 [2021-10-13 17:55:07,660 INFO L226 Difference]: Without dead ends: 2916 [2021-10-13 17:55:07,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 175.7ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-10-13 17:55:07,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2562. [2021-10-13 17:55:07,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 2.8320968371729793) internal successors, (7253), 2561 states have internal predecessors, (7253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7253 transitions. [2021-10-13 17:55:07,701 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7253 transitions. Word has length 38 [2021-10-13 17:55:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:07,701 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 7253 transitions. [2021-10-13 17:55:07,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:07,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7253 transitions. [2021-10-13 17:55:07,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:07,705 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:07,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:07,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-10-13 17:55:07,706 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:07,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:07,706 INFO L82 PathProgramCache]: Analyzing trace with hash -355311659, now seen corresponding path program 145 times [2021-10-13 17:55:07,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:07,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394421013] [2021-10-13 17:55:07,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:07,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:07,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:07,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:07,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394421013] [2021-10-13 17:55:07,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394421013] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:07,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:07,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:07,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450062121] [2021-10-13 17:55:07,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:07,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:07,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:07,800 INFO L87 Difference]: Start difference. First operand 2562 states and 7253 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:08,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:08,273 INFO L93 Difference]: Finished difference Result 3582 states and 9804 transitions. [2021-10-13 17:55:08,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:08,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:08,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:08,279 INFO L225 Difference]: With dead ends: 3582 [2021-10-13 17:55:08,279 INFO L226 Difference]: Without dead ends: 3574 [2021-10-13 17:55:08,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 150.7ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-10-13 17:55:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2592. [2021-10-13 17:55:08,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2591 states have (on average 2.828251640293323) internal successors, (7328), 2591 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:08,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 7328 transitions. [2021-10-13 17:55:08,324 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 7328 transitions. Word has length 38 [2021-10-13 17:55:08,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:08,324 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 7328 transitions. [2021-10-13 17:55:08,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:08,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 7328 transitions. [2021-10-13 17:55:08,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:08,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:08,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:08,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-10-13 17:55:08,329 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1414452133, now seen corresponding path program 146 times [2021-10-13 17:55:08,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:08,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627312509] [2021-10-13 17:55:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:08,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:08,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:08,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627312509] [2021-10-13 17:55:08,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627312509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:08,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:08,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:08,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190213199] [2021-10-13 17:55:08,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:08,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:08,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:08,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:08,436 INFO L87 Difference]: Start difference. First operand 2592 states and 7328 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:08,998 INFO L93 Difference]: Finished difference Result 3644 states and 9945 transitions. [2021-10-13 17:55:08,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:08,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:08,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:09,004 INFO L225 Difference]: With dead ends: 3644 [2021-10-13 17:55:09,005 INFO L226 Difference]: Without dead ends: 3630 [2021-10-13 17:55:09,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 210.3ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:09,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2021-10-13 17:55:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 2584. [2021-10-13 17:55:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2583 states have (on average 2.8300425861401473) internal successors, (7310), 2583 states have internal predecessors, (7310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:09,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 7310 transitions. [2021-10-13 17:55:09,049 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 7310 transitions. Word has length 38 [2021-10-13 17:55:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:09,049 INFO L470 AbstractCegarLoop]: Abstraction has 2584 states and 7310 transitions. [2021-10-13 17:55:09,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:09,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 7310 transitions. [2021-10-13 17:55:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:09,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:09,053 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:09,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-10-13 17:55:09,053 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:09,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:09,054 INFO L82 PathProgramCache]: Analyzing trace with hash 185201903, now seen corresponding path program 147 times [2021-10-13 17:55:09,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:09,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360180075] [2021-10-13 17:55:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:09,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:09,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:09,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360180075] [2021-10-13 17:55:09,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360180075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:09,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:09,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:09,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737033699] [2021-10-13 17:55:09,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:09,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:09,163 INFO L87 Difference]: Start difference. First operand 2584 states and 7310 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:09,691 INFO L93 Difference]: Finished difference Result 3036 states and 8320 transitions. [2021-10-13 17:55:09,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:09,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:09,696 INFO L225 Difference]: With dead ends: 3036 [2021-10-13 17:55:09,696 INFO L226 Difference]: Without dead ends: 2942 [2021-10-13 17:55:09,697 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 175.3ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-10-13 17:55:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2634. [2021-10-13 17:55:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 2.8131409039118878) internal successors, (7407), 2633 states have internal predecessors, (7407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7407 transitions. [2021-10-13 17:55:09,734 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7407 transitions. Word has length 38 [2021-10-13 17:55:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:09,734 INFO L470 AbstractCegarLoop]: Abstraction has 2634 states and 7407 transitions. [2021-10-13 17:55:09,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7407 transitions. [2021-10-13 17:55:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:09,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:09,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:09,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-10-13 17:55:09,738 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -565551179, now seen corresponding path program 148 times [2021-10-13 17:55:09,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:09,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002595549] [2021-10-13 17:55:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:09,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:09,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:09,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002595549] [2021-10-13 17:55:09,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002595549] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:09,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:09,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:09,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538745902] [2021-10-13 17:55:09,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:09,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:09,843 INFO L87 Difference]: Start difference. First operand 2634 states and 7407 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:10,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:10,425 INFO L93 Difference]: Finished difference Result 3592 states and 9690 transitions. [2021-10-13 17:55:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:55:10,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:10,432 INFO L225 Difference]: With dead ends: 3592 [2021-10-13 17:55:10,432 INFO L226 Difference]: Without dead ends: 3480 [2021-10-13 17:55:10,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 207.1ms TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:10,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-10-13 17:55:10,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2690. [2021-10-13 17:55:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2689 states have (on average 2.806619561175158) internal successors, (7547), 2689 states have internal predecessors, (7547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 7547 transitions. [2021-10-13 17:55:10,473 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 7547 transitions. Word has length 38 [2021-10-13 17:55:10,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:10,473 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 7547 transitions. [2021-10-13 17:55:10,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:10,473 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 7547 transitions. [2021-10-13 17:55:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:10,477 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:10,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:10,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-10-13 17:55:10,477 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:10,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:10,478 INFO L82 PathProgramCache]: Analyzing trace with hash 743867877, now seen corresponding path program 149 times [2021-10-13 17:55:10,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:10,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016322486] [2021-10-13 17:55:10,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:10,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:10,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:10,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:10,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016322486] [2021-10-13 17:55:10,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016322486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:10,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:10,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:10,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318708886] [2021-10-13 17:55:10,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:10,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:10,606 INFO L87 Difference]: Start difference. First operand 2690 states and 7547 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:11,319 INFO L93 Difference]: Finished difference Result 3386 states and 9106 transitions. [2021-10-13 17:55:11,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:55:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:11,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:11,325 INFO L225 Difference]: With dead ends: 3386 [2021-10-13 17:55:11,325 INFO L226 Difference]: Without dead ends: 3262 [2021-10-13 17:55:11,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 288.6ms TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:55:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-10-13 17:55:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2682. [2021-10-13 17:55:11,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 2.8082804923535996) internal successors, (7529), 2681 states have internal predecessors, (7529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7529 transitions. [2021-10-13 17:55:11,364 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7529 transitions. Word has length 38 [2021-10-13 17:55:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:11,364 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7529 transitions. [2021-10-13 17:55:11,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7529 transitions. [2021-10-13 17:55:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:11,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:11,368 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:11,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-10-13 17:55:11,369 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:11,369 INFO L82 PathProgramCache]: Analyzing trace with hash -86993585, now seen corresponding path program 150 times [2021-10-13 17:55:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:11,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404594186] [2021-10-13 17:55:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:11,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:11,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:11,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404594186] [2021-10-13 17:55:11,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404594186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:11,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:11,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:55:11,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9575936] [2021-10-13 17:55:11,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:55:11,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:11,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:55:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:55:11,463 INFO L87 Difference]: Start difference. First operand 2682 states and 7529 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:11,808 INFO L93 Difference]: Finished difference Result 3410 states and 9220 transitions. [2021-10-13 17:55:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:55:11,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:11,815 INFO L225 Difference]: With dead ends: 3410 [2021-10-13 17:55:11,815 INFO L226 Difference]: Without dead ends: 3402 [2021-10-13 17:55:11,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 107.5ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:55:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-10-13 17:55:11,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 2694. [2021-10-13 17:55:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 2.8091347939101374) internal successors, (7565), 2693 states have internal predecessors, (7565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 7565 transitions. [2021-10-13 17:55:11,855 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 7565 transitions. Word has length 38 [2021-10-13 17:55:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:11,855 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 7565 transitions. [2021-10-13 17:55:11,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 7565 transitions. [2021-10-13 17:55:11,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:11,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:11,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:11,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-10-13 17:55:11,861 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:11,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:11,861 INFO L82 PathProgramCache]: Analyzing trace with hash 373351151, now seen corresponding path program 151 times [2021-10-13 17:55:11,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:11,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000228358] [2021-10-13 17:55:11,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:11,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:11,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:11,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000228358] [2021-10-13 17:55:11,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000228358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:11,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:11,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:11,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308150133] [2021-10-13 17:55:11,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:11,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:11,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:11,963 INFO L87 Difference]: Start difference. First operand 2694 states and 7565 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:12,428 INFO L93 Difference]: Finished difference Result 3466 states and 9309 transitions. [2021-10-13 17:55:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:12,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:12,435 INFO L225 Difference]: With dead ends: 3466 [2021-10-13 17:55:12,435 INFO L226 Difference]: Without dead ends: 3340 [2021-10-13 17:55:12,435 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 151.7ms TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-10-13 17:55:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2682. [2021-10-13 17:55:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 2.8075345020514733) internal successors, (7527), 2681 states have internal predecessors, (7527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7527 transitions. [2021-10-13 17:55:12,475 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7527 transitions. Word has length 38 [2021-10-13 17:55:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:12,476 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7527 transitions. [2021-10-13 17:55:12,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7527 transitions. [2021-10-13 17:55:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:12,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:12,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:12,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-10-13 17:55:12,480 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:12,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1850291487, now seen corresponding path program 152 times [2021-10-13 17:55:12,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:12,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503658940] [2021-10-13 17:55:12,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:12,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:12,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:12,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503658940] [2021-10-13 17:55:12,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503658940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:12,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:12,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:12,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797607443] [2021-10-13 17:55:12,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:12,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:12,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:12,587 INFO L87 Difference]: Start difference. First operand 2682 states and 7527 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:12,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:12,967 INFO L93 Difference]: Finished difference Result 3370 states and 9086 transitions. [2021-10-13 17:55:12,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:12,968 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:12,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:12,974 INFO L225 Difference]: With dead ends: 3370 [2021-10-13 17:55:12,974 INFO L226 Difference]: Without dead ends: 3362 [2021-10-13 17:55:12,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:55:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-10-13 17:55:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2682. [2021-10-13 17:55:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2681 states have (on average 2.8067885117493474) internal successors, (7525), 2681 states have internal predecessors, (7525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7525 transitions. [2021-10-13 17:55:13,016 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7525 transitions. Word has length 38 [2021-10-13 17:55:13,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:13,017 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7525 transitions. [2021-10-13 17:55:13,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7525 transitions. [2021-10-13 17:55:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:13,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:13,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:13,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-10-13 17:55:13,021 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:13,021 INFO L82 PathProgramCache]: Analyzing trace with hash -674912017, now seen corresponding path program 153 times [2021-10-13 17:55:13,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:13,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521423611] [2021-10-13 17:55:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:13,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:13,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:13,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521423611] [2021-10-13 17:55:13,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521423611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:13,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:13,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:13,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351829045] [2021-10-13 17:55:13,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:13,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:13,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:13,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:13,140 INFO L87 Difference]: Start difference. First operand 2682 states and 7525 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:13,670 INFO L93 Difference]: Finished difference Result 3334 states and 8998 transitions. [2021-10-13 17:55:13,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:13,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:13,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:13,676 INFO L225 Difference]: With dead ends: 3334 [2021-10-13 17:55:13,676 INFO L226 Difference]: Without dead ends: 3326 [2021-10-13 17:55:13,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 183.2ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-10-13 17:55:13,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2680. [2021-10-13 17:55:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2679 states have (on average 2.807017543859649) internal successors, (7520), 2679 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:13,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 7520 transitions. [2021-10-13 17:55:13,720 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 7520 transitions. Word has length 38 [2021-10-13 17:55:13,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:13,720 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 7520 transitions. [2021-10-13 17:55:13,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 7520 transitions. [2021-10-13 17:55:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:13,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:13,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:13,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-10-13 17:55:13,725 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:13,725 INFO L82 PathProgramCache]: Analyzing trace with hash -861915627, now seen corresponding path program 154 times [2021-10-13 17:55:13,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:13,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675102230] [2021-10-13 17:55:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:13,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:13,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:13,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675102230] [2021-10-13 17:55:13,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675102230] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:13,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:13,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:13,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758499496] [2021-10-13 17:55:13,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:13,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:13,836 INFO L87 Difference]: Start difference. First operand 2680 states and 7520 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:14,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:14,374 INFO L93 Difference]: Finished difference Result 3340 states and 8915 transitions. [2021-10-13 17:55:14,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:14,374 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:14,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:14,381 INFO L225 Difference]: With dead ends: 3340 [2021-10-13 17:55:14,381 INFO L226 Difference]: Without dead ends: 3228 [2021-10-13 17:55:14,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 182.3ms TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-13 17:55:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2566. [2021-10-13 17:55:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2565 states have (on average 2.7867446393762183) internal successors, (7148), 2565 states have internal predecessors, (7148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 7148 transitions. [2021-10-13 17:55:14,423 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 7148 transitions. Word has length 38 [2021-10-13 17:55:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:14,424 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 7148 transitions. [2021-10-13 17:55:14,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 7148 transitions. [2021-10-13 17:55:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:14,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:14,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:14,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-10-13 17:55:14,428 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:14,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:14,429 INFO L82 PathProgramCache]: Analyzing trace with hash 447503429, now seen corresponding path program 155 times [2021-10-13 17:55:14,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:14,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114758788] [2021-10-13 17:55:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:14,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:14,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:14,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114758788] [2021-10-13 17:55:14,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114758788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:14,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:14,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:14,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534803744] [2021-10-13 17:55:14,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:14,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:14,547 INFO L87 Difference]: Start difference. First operand 2566 states and 7148 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:15,096 INFO L93 Difference]: Finished difference Result 3080 states and 8220 transitions. [2021-10-13 17:55:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:15,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:15,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:15,103 INFO L225 Difference]: With dead ends: 3080 [2021-10-13 17:55:15,103 INFO L226 Difference]: Without dead ends: 2966 [2021-10-13 17:55:15,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 210.8ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:15,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-10-13 17:55:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2390. [2021-10-13 17:55:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 2.7827542904981164) internal successors, (6648), 2389 states have internal predecessors, (6648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 6648 transitions. [2021-10-13 17:55:15,146 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 6648 transitions. Word has length 38 [2021-10-13 17:55:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 6648 transitions. [2021-10-13 17:55:15,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 6648 transitions. [2021-10-13 17:55:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:15,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:15,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:15,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-10-13 17:55:15,150 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:15,150 INFO L82 PathProgramCache]: Analyzing trace with hash -951711641, now seen corresponding path program 156 times [2021-10-13 17:55:15,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:15,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683785174] [2021-10-13 17:55:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:15,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:15,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:15,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683785174] [2021-10-13 17:55:15,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683785174] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:15,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:15,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:15,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295915515] [2021-10-13 17:55:15,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:15,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:15,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:15,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:15,251 INFO L87 Difference]: Start difference. First operand 2390 states and 6648 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:15,668 INFO L93 Difference]: Finished difference Result 2848 states and 7679 transitions. [2021-10-13 17:55:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:15,668 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:15,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:15,675 INFO L225 Difference]: With dead ends: 2848 [2021-10-13 17:55:15,675 INFO L226 Difference]: Without dead ends: 2840 [2021-10-13 17:55:15,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 160.5ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-10-13 17:55:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2390. [2021-10-13 17:55:15,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2389 states have (on average 2.781917120133947) internal successors, (6646), 2389 states have internal predecessors, (6646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 6646 transitions. [2021-10-13 17:55:15,715 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 6646 transitions. Word has length 38 [2021-10-13 17:55:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:15,715 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 6646 transitions. [2021-10-13 17:55:15,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 6646 transitions. [2021-10-13 17:55:15,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:15,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:15,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:15,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-10-13 17:55:15,719 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:15,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1197748297, now seen corresponding path program 157 times [2021-10-13 17:55:15,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:15,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142511305] [2021-10-13 17:55:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:15,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:15,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:15,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:15,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142511305] [2021-10-13 17:55:15,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142511305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:15,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:15,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:15,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559541996] [2021-10-13 17:55:15,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:15,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:15,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:15,828 INFO L87 Difference]: Start difference. First operand 2390 states and 6646 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:16,304 INFO L93 Difference]: Finished difference Result 2882 states and 7756 transitions. [2021-10-13 17:55:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:16,310 INFO L225 Difference]: With dead ends: 2882 [2021-10-13 17:55:16,310 INFO L226 Difference]: Without dead ends: 2860 [2021-10-13 17:55:16,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 176.5ms TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:16,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-10-13 17:55:16,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2386. [2021-10-13 17:55:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2386 states, 2385 states have (on average 2.7819706498951784) internal successors, (6635), 2385 states have internal predecessors, (6635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 6635 transitions. [2021-10-13 17:55:16,346 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 6635 transitions. Word has length 38 [2021-10-13 17:55:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:16,347 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 6635 transitions. [2021-10-13 17:55:16,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 6635 transitions. [2021-10-13 17:55:16,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:16,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:16,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:16,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-10-13 17:55:16,350 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1968104795, now seen corresponding path program 158 times [2021-10-13 17:55:16,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:16,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931020483] [2021-10-13 17:55:16,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:16,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:16,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:16,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931020483] [2021-10-13 17:55:16,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931020483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:16,456 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:16,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:16,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500736020] [2021-10-13 17:55:16,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:16,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:16,457 INFO L87 Difference]: Start difference. First operand 2386 states and 6635 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:16,907 INFO L93 Difference]: Finished difference Result 2764 states and 7472 transitions. [2021-10-13 17:55:16,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:16,907 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:16,912 INFO L225 Difference]: With dead ends: 2764 [2021-10-13 17:55:16,912 INFO L226 Difference]: Without dead ends: 2748 [2021-10-13 17:55:16,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2021-10-13 17:55:16,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2380. [2021-10-13 17:55:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 2379 states have (on average 2.781841109709962) internal successors, (6618), 2379 states have internal predecessors, (6618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 6618 transitions. [2021-10-13 17:55:16,947 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 6618 transitions. Word has length 38 [2021-10-13 17:55:16,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:16,947 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 6618 transitions. [2021-10-13 17:55:16,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:16,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 6618 transitions. [2021-10-13 17:55:16,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:16,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:16,950 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:16,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-10-13 17:55:16,951 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:16,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:16,951 INFO L82 PathProgramCache]: Analyzing trace with hash -35903221, now seen corresponding path program 159 times [2021-10-13 17:55:16,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:16,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696035089] [2021-10-13 17:55:16,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:16,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:17,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:17,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696035089] [2021-10-13 17:55:17,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696035089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:17,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:17,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:17,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903863802] [2021-10-13 17:55:17,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:17,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:17,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:17,054 INFO L87 Difference]: Start difference. First operand 2380 states and 6618 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:17,493 INFO L93 Difference]: Finished difference Result 2620 states and 7168 transitions. [2021-10-13 17:55:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:17,498 INFO L225 Difference]: With dead ends: 2620 [2021-10-13 17:55:17,498 INFO L226 Difference]: Without dead ends: 2590 [2021-10-13 17:55:17,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 159.7ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:17,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-10-13 17:55:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2358. [2021-10-13 17:55:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2357 states have (on average 2.7785320322443785) internal successors, (6549), 2357 states have internal predecessors, (6549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 6549 transitions. [2021-10-13 17:55:17,535 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 6549 transitions. Word has length 38 [2021-10-13 17:55:17,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:17,535 INFO L470 AbstractCegarLoop]: Abstraction has 2358 states and 6549 transitions. [2021-10-13 17:55:17,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 6549 transitions. [2021-10-13 17:55:17,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:17,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:17,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:17,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-10-13 17:55:17,539 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:17,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:17,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1251343195, now seen corresponding path program 160 times [2021-10-13 17:55:17,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:17,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871685794] [2021-10-13 17:55:17,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:17,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:17,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:17,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871685794] [2021-10-13 17:55:17,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871685794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:17,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:17,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:17,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311498991] [2021-10-13 17:55:17,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:17,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:17,657 INFO L87 Difference]: Start difference. First operand 2358 states and 6549 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:18,232 INFO L93 Difference]: Finished difference Result 2882 states and 7673 transitions. [2021-10-13 17:55:18,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:18,238 INFO L225 Difference]: With dead ends: 2882 [2021-10-13 17:55:18,238 INFO L226 Difference]: Without dead ends: 2816 [2021-10-13 17:55:18,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-10-13 17:55:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2322. [2021-10-13 17:55:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 2321 states have (on average 2.7802671262386904) internal successors, (6453), 2321 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 6453 transitions. [2021-10-13 17:55:18,273 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 6453 transitions. Word has length 38 [2021-10-13 17:55:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 6453 transitions. [2021-10-13 17:55:18,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 6453 transitions. [2021-10-13 17:55:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:18,276 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:18,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:18,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-10-13 17:55:18,277 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:18,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:18,277 INFO L82 PathProgramCache]: Analyzing trace with hash 926895035, now seen corresponding path program 161 times [2021-10-13 17:55:18,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:18,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020041281] [2021-10-13 17:55:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:18,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:18,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:18,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020041281] [2021-10-13 17:55:18,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020041281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:18,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:18,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:18,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845753002] [2021-10-13 17:55:18,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:18,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:18,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:18,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:18,390 INFO L87 Difference]: Start difference. First operand 2322 states and 6453 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:18,937 INFO L93 Difference]: Finished difference Result 2758 states and 7401 transitions. [2021-10-13 17:55:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:18,944 INFO L225 Difference]: With dead ends: 2758 [2021-10-13 17:55:18,944 INFO L226 Difference]: Without dead ends: 2660 [2021-10-13 17:55:18,944 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-13 17:55:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2232. [2021-10-13 17:55:18,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 2231 states have (on average 2.790676826535186) internal successors, (6226), 2231 states have internal predecessors, (6226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 6226 transitions. [2021-10-13 17:55:18,979 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 6226 transitions. Word has length 38 [2021-10-13 17:55:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:18,980 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 6226 transitions. [2021-10-13 17:55:18,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 6226 transitions. [2021-10-13 17:55:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:18,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:18,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:18,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-10-13 17:55:18,983 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:18,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:18,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1121412679, now seen corresponding path program 162 times [2021-10-13 17:55:18,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:18,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246562194] [2021-10-13 17:55:18,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:18,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:19,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:19,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246562194] [2021-10-13 17:55:19,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246562194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:19,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:19,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:19,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443748949] [2021-10-13 17:55:19,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:19,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:19,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:19,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:19,074 INFO L87 Difference]: Start difference. First operand 2232 states and 6226 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:19,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:19,475 INFO L93 Difference]: Finished difference Result 2702 states and 7263 transitions. [2021-10-13 17:55:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:19,480 INFO L225 Difference]: With dead ends: 2702 [2021-10-13 17:55:19,480 INFO L226 Difference]: Without dead ends: 2694 [2021-10-13 17:55:19,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 169.1ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-10-13 17:55:19,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2228. [2021-10-13 17:55:19,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2227 states have (on average 2.789402784014369) internal successors, (6212), 2227 states have internal predecessors, (6212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:19,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6212 transitions. [2021-10-13 17:55:19,514 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6212 transitions. Word has length 38 [2021-10-13 17:55:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:19,514 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 6212 transitions. [2021-10-13 17:55:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6212 transitions. [2021-10-13 17:55:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:19,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:19,518 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:19,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-10-13 17:55:19,518 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1140085863, now seen corresponding path program 163 times [2021-10-13 17:55:19,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:19,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032434813] [2021-10-13 17:55:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:19,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:19,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:19,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032434813] [2021-10-13 17:55:19,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032434813] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:19,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161336280] [2021-10-13 17:55:19,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:19,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:19,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:19,627 INFO L87 Difference]: Start difference. First operand 2228 states and 6212 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:20,121 INFO L93 Difference]: Finished difference Result 2704 states and 7260 transitions. [2021-10-13 17:55:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:20,126 INFO L225 Difference]: With dead ends: 2704 [2021-10-13 17:55:20,126 INFO L226 Difference]: Without dead ends: 2688 [2021-10-13 17:55:20,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 208.1ms TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:20,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-10-13 17:55:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2222. [2021-10-13 17:55:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2222 states, 2221 states have (on average 2.7892841062584424) internal successors, (6195), 2221 states have internal predecessors, (6195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6195 transitions. [2021-10-13 17:55:20,158 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6195 transitions. Word has length 38 [2021-10-13 17:55:20,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:20,158 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 6195 transitions. [2021-10-13 17:55:20,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6195 transitions. [2021-10-13 17:55:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:20,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:20,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:20,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-10-13 17:55:20,162 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1222679859, now seen corresponding path program 164 times [2021-10-13 17:55:20,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:20,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917061139] [2021-10-13 17:55:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:20,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:20,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:20,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917061139] [2021-10-13 17:55:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917061139] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:20,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:20,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:20,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672859212] [2021-10-13 17:55:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:20,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:20,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:20,255 INFO L87 Difference]: Start difference. First operand 2222 states and 6195 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:20,691 INFO L93 Difference]: Finished difference Result 2470 states and 6770 transitions. [2021-10-13 17:55:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:20,696 INFO L225 Difference]: With dead ends: 2470 [2021-10-13 17:55:20,696 INFO L226 Difference]: Without dead ends: 2440 [2021-10-13 17:55:20,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 229.5ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:20,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-10-13 17:55:20,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2204. [2021-10-13 17:55:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 2203 states have (on average 2.7889241942805265) internal successors, (6144), 2203 states have internal predecessors, (6144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 6144 transitions. [2021-10-13 17:55:20,727 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 6144 transitions. Word has length 38 [2021-10-13 17:55:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:20,727 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 6144 transitions. [2021-10-13 17:55:20,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:20,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 6144 transitions. [2021-10-13 17:55:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:20,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:20,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:20,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-10-13 17:55:20,731 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:20,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2138319541, now seen corresponding path program 165 times [2021-10-13 17:55:20,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:20,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276817147] [2021-10-13 17:55:20,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:20,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:20,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:20,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276817147] [2021-10-13 17:55:20,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276817147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:20,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:20,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:20,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931338299] [2021-10-13 17:55:20,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:20,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:20,826 INFO L87 Difference]: Start difference. First operand 2204 states and 6144 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:21,193 INFO L93 Difference]: Finished difference Result 2502 states and 6830 transitions. [2021-10-13 17:55:21,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:21,194 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:21,198 INFO L225 Difference]: With dead ends: 2502 [2021-10-13 17:55:21,198 INFO L226 Difference]: Without dead ends: 2478 [2021-10-13 17:55:21,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 170.5ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-10-13 17:55:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2198. [2021-10-13 17:55:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 2.788802913063268) internal successors, (6127), 2197 states have internal predecessors, (6127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 6127 transitions. [2021-10-13 17:55:21,229 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 6127 transitions. Word has length 38 [2021-10-13 17:55:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:21,229 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 6127 transitions. [2021-10-13 17:55:21,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 6127 transitions. [2021-10-13 17:55:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:21,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:21,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:21,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-10-13 17:55:21,232 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash 832294233, now seen corresponding path program 166 times [2021-10-13 17:55:21,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:21,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313480061] [2021-10-13 17:55:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:21,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:21,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:21,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313480061] [2021-10-13 17:55:21,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313480061] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:21,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:21,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:21,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073720214] [2021-10-13 17:55:21,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:21,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:21,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:21,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:21,336 INFO L87 Difference]: Start difference. First operand 2198 states and 6127 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:21,935 INFO L93 Difference]: Finished difference Result 2652 states and 7121 transitions. [2021-10-13 17:55:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:55:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:21,944 INFO L225 Difference]: With dead ends: 2652 [2021-10-13 17:55:21,944 INFO L226 Difference]: Without dead ends: 2590 [2021-10-13 17:55:21,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 257.7ms TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-10-13 17:55:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2198. [2021-10-13 17:55:21,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2198 states, 2197 states have (on average 2.783340919435594) internal successors, (6115), 2197 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 6115 transitions. [2021-10-13 17:55:21,977 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 6115 transitions. Word has length 38 [2021-10-13 17:55:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:21,977 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 6115 transitions. [2021-10-13 17:55:21,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 6115 transitions. [2021-10-13 17:55:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:21,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:21,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:21,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-10-13 17:55:21,981 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:21,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2131889963, now seen corresponding path program 167 times [2021-10-13 17:55:21,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:21,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955443384] [2021-10-13 17:55:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:21,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:21,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:22,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:22,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955443384] [2021-10-13 17:55:22,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955443384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:22,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:22,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:22,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842299027] [2021-10-13 17:55:22,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:22,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:22,076 INFO L87 Difference]: Start difference. First operand 2198 states and 6115 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:22,597 INFO L93 Difference]: Finished difference Result 2642 states and 7082 transitions. [2021-10-13 17:55:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:22,601 INFO L225 Difference]: With dead ends: 2642 [2021-10-13 17:55:22,601 INFO L226 Difference]: Without dead ends: 2578 [2021-10-13 17:55:22,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 187.6ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-10-13 17:55:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2182. [2021-10-13 17:55:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2182 states, 2181 states have (on average 2.7794589637780835) internal successors, (6062), 2181 states have internal predecessors, (6062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 6062 transitions. [2021-10-13 17:55:22,631 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 6062 transitions. Word has length 38 [2021-10-13 17:55:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:22,631 INFO L470 AbstractCegarLoop]: Abstraction has 2182 states and 6062 transitions. [2021-10-13 17:55:22,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 6062 transitions. [2021-10-13 17:55:22,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:22,634 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:22,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:22,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-10-13 17:55:22,635 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:22,635 INFO L82 PathProgramCache]: Analyzing trace with hash 106252215, now seen corresponding path program 168 times [2021-10-13 17:55:22,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:22,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135910120] [2021-10-13 17:55:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:22,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:22,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:22,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135910120] [2021-10-13 17:55:22,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135910120] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:22,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:22,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:22,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541746465] [2021-10-13 17:55:22,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:22,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:22,726 INFO L87 Difference]: Start difference. First operand 2182 states and 6062 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:23,294 INFO L93 Difference]: Finished difference Result 2690 states and 7159 transitions. [2021-10-13 17:55:23,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:23,299 INFO L225 Difference]: With dead ends: 2690 [2021-10-13 17:55:23,300 INFO L226 Difference]: Without dead ends: 2600 [2021-10-13 17:55:23,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-10-13 17:55:23,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2086. [2021-10-13 17:55:23,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 2.790887290167866) internal successors, (5819), 2085 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5819 transitions. [2021-10-13 17:55:23,330 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5819 transitions. Word has length 38 [2021-10-13 17:55:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:23,330 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5819 transitions. [2021-10-13 17:55:23,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5819 transitions. [2021-10-13 17:55:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:23,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:23,333 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:23,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-10-13 17:55:23,333 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1225405947, now seen corresponding path program 169 times [2021-10-13 17:55:23,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:23,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167667708] [2021-10-13 17:55:23,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:23,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:23,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:23,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167667708] [2021-10-13 17:55:23,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167667708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:23,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:23,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:23,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568988698] [2021-10-13 17:55:23,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:23,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:23,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:23,430 INFO L87 Difference]: Start difference. First operand 2086 states and 5819 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:23,964 INFO L93 Difference]: Finished difference Result 2506 states and 6754 transitions. [2021-10-13 17:55:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:23,969 INFO L225 Difference]: With dead ends: 2506 [2021-10-13 17:55:23,969 INFO L226 Difference]: Without dead ends: 2434 [2021-10-13 17:55:23,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 186.3ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:23,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-10-13 17:55:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2058. [2021-10-13 17:55:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2057 states have (on average 2.8011667476908118) internal successors, (5762), 2057 states have internal predecessors, (5762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 5762 transitions. [2021-10-13 17:55:24,003 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 5762 transitions. Word has length 38 [2021-10-13 17:55:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:24,003 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 5762 transitions. [2021-10-13 17:55:24,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 5762 transitions. [2021-10-13 17:55:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:24,006 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:24,006 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:24,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-10-13 17:55:24,006 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:24,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1347939981, now seen corresponding path program 170 times [2021-10-13 17:55:24,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:24,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826696524] [2021-10-13 17:55:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:24,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:24,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:24,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826696524] [2021-10-13 17:55:24,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826696524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:24,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:24,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:55:24,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386033980] [2021-10-13 17:55:24,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:55:24,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:55:24,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:55:24,077 INFO L87 Difference]: Start difference. First operand 2058 states and 5762 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:24,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:24,411 INFO L93 Difference]: Finished difference Result 2392 states and 6548 transitions. [2021-10-13 17:55:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:55:24,411 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:24,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:24,415 INFO L225 Difference]: With dead ends: 2392 [2021-10-13 17:55:24,415 INFO L226 Difference]: Without dead ends: 2292 [2021-10-13 17:55:24,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-13 17:55:24,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-10-13 17:55:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2086. [2021-10-13 17:55:24,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 2.7990407673860913) internal successors, (5836), 2085 states have internal predecessors, (5836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5836 transitions. [2021-10-13 17:55:24,461 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5836 transitions. Word has length 38 [2021-10-13 17:55:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:24,461 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5836 transitions. [2021-10-13 17:55:24,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5836 transitions. [2021-10-13 17:55:24,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:24,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:24,464 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:24,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-10-13 17:55:24,464 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:24,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:24,465 INFO L82 PathProgramCache]: Analyzing trace with hash -855610941, now seen corresponding path program 171 times [2021-10-13 17:55:24,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:24,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114343573] [2021-10-13 17:55:24,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:24,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:24,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:24,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114343573] [2021-10-13 17:55:24,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114343573] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:24,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:24,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:24,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391074589] [2021-10-13 17:55:24,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:24,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:24,571 INFO L87 Difference]: Start difference. First operand 2086 states and 5836 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:25,026 INFO L93 Difference]: Finished difference Result 2340 states and 6413 transitions. [2021-10-13 17:55:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:25,026 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:25,030 INFO L225 Difference]: With dead ends: 2340 [2021-10-13 17:55:25,031 INFO L226 Difference]: Without dead ends: 2312 [2021-10-13 17:55:25,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 178.0ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-10-13 17:55:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2098. [2021-10-13 17:55:25,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 2.791607057701478) internal successors, (5854), 2097 states have internal predecessors, (5854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 5854 transitions. [2021-10-13 17:55:25,062 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 5854 transitions. Word has length 38 [2021-10-13 17:55:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:25,062 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 5854 transitions. [2021-10-13 17:55:25,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 5854 transitions. [2021-10-13 17:55:25,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:25,065 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:25,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:25,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-10-13 17:55:25,066 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:25,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1105843091, now seen corresponding path program 172 times [2021-10-13 17:55:25,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:25,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621793067] [2021-10-13 17:55:25,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:25,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:25,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:25,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621793067] [2021-10-13 17:55:25,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621793067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:25,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:25,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:25,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424163774] [2021-10-13 17:55:25,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:25,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:25,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:25,168 INFO L87 Difference]: Start difference. First operand 2098 states and 5854 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:25,571 INFO L93 Difference]: Finished difference Result 2652 states and 7139 transitions. [2021-10-13 17:55:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:25,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:25,576 INFO L225 Difference]: With dead ends: 2652 [2021-10-13 17:55:25,576 INFO L226 Difference]: Without dead ends: 2644 [2021-10-13 17:55:25,576 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-10-13 17:55:25,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2122. [2021-10-13 17:55:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 2121 states have (on average 2.7911362564827913) internal successors, (5920), 2121 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 5920 transitions. [2021-10-13 17:55:25,610 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 5920 transitions. Word has length 38 [2021-10-13 17:55:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:25,611 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 5920 transitions. [2021-10-13 17:55:25,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 5920 transitions. [2021-10-13 17:55:25,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:25,614 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:25,614 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:25,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-10-13 17:55:25,614 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:25,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:25,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1419360413, now seen corresponding path program 173 times [2021-10-13 17:55:25,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:25,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381865619] [2021-10-13 17:55:25,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:25,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:25,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:25,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381865619] [2021-10-13 17:55:25,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381865619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:25,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:25,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:25,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791477111] [2021-10-13 17:55:25,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:25,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:25,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:25,719 INFO L87 Difference]: Start difference. First operand 2122 states and 5920 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:26,231 INFO L93 Difference]: Finished difference Result 2694 states and 7216 transitions. [2021-10-13 17:55:26,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:26,232 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:26,236 INFO L225 Difference]: With dead ends: 2694 [2021-10-13 17:55:26,236 INFO L226 Difference]: Without dead ends: 2660 [2021-10-13 17:55:26,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 212.1ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-13 17:55:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2098. [2021-10-13 17:55:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 2097 states have (on average 2.7963757749165477) internal successors, (5864), 2097 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 5864 transitions. [2021-10-13 17:55:26,271 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 5864 transitions. Word has length 38 [2021-10-13 17:55:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:26,271 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 5864 transitions. [2021-10-13 17:55:26,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 5864 transitions. [2021-10-13 17:55:26,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:26,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:26,275 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:26,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-10-13 17:55:26,275 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1646356653, now seen corresponding path program 174 times [2021-10-13 17:55:26,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:26,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847854959] [2021-10-13 17:55:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:26,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:26,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:26,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847854959] [2021-10-13 17:55:26,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847854959] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:26,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:26,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:26,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17038482] [2021-10-13 17:55:26,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:26,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:26,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:26,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:26,363 INFO L87 Difference]: Start difference. First operand 2098 states and 5864 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:26,815 INFO L93 Difference]: Finished difference Result 2328 states and 6328 transitions. [2021-10-13 17:55:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:26,820 INFO L225 Difference]: With dead ends: 2328 [2021-10-13 17:55:26,821 INFO L226 Difference]: Without dead ends: 2218 [2021-10-13 17:55:26,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:26,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-10-13 17:55:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2052. [2021-10-13 17:55:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.80107264748903) internal successors, (5745), 2051 states have internal predecessors, (5745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5745 transitions. [2021-10-13 17:55:26,853 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5745 transitions. Word has length 38 [2021-10-13 17:55:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:26,853 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5745 transitions. [2021-10-13 17:55:26,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:26,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5745 transitions. [2021-10-13 17:55:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:26,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:26,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:26,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-10-13 17:55:26,856 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash 895603571, now seen corresponding path program 175 times [2021-10-13 17:55:26,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:26,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588116835] [2021-10-13 17:55:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:26,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:26,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:26,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:26,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588116835] [2021-10-13 17:55:26,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588116835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:26,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:26,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:26,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639802229] [2021-10-13 17:55:26,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:26,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:26,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:26,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:26,945 INFO L87 Difference]: Start difference. First operand 2052 states and 5745 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:27,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:27,406 INFO L93 Difference]: Finished difference Result 2430 states and 6568 transitions. [2021-10-13 17:55:27,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:27,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:27,412 INFO L225 Difference]: With dead ends: 2430 [2021-10-13 17:55:27,412 INFO L226 Difference]: Without dead ends: 2396 [2021-10-13 17:55:27,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2021-10-13 17:55:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2062. [2021-10-13 17:55:27,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 2.7986414361960215) internal successors, (5768), 2061 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5768 transitions. [2021-10-13 17:55:27,445 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5768 transitions. Word has length 38 [2021-10-13 17:55:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:27,446 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5768 transitions. [2021-10-13 17:55:27,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5768 transitions. [2021-10-13 17:55:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:27,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:27,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:27,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-10-13 17:55:27,449 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:27,449 INFO L82 PathProgramCache]: Analyzing trace with hash -2089944669, now seen corresponding path program 176 times [2021-10-13 17:55:27,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:27,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179490538] [2021-10-13 17:55:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:27,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:27,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:27,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:27,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179490538] [2021-10-13 17:55:27,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179490538] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:27,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:27,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:27,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50488883] [2021-10-13 17:55:27,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:27,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:27,550 INFO L87 Difference]: Start difference. First operand 2062 states and 5768 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:28,094 INFO L93 Difference]: Finished difference Result 2454 states and 6614 transitions. [2021-10-13 17:55:28,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:28,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:28,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:28,099 INFO L225 Difference]: With dead ends: 2454 [2021-10-13 17:55:28,099 INFO L226 Difference]: Without dead ends: 2432 [2021-10-13 17:55:28,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-10-13 17:55:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2054. [2021-10-13 17:55:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2053 states have (on average 2.800779347296639) internal successors, (5750), 2053 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 5750 transitions. [2021-10-13 17:55:28,133 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 5750 transitions. Word has length 38 [2021-10-13 17:55:28,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:28,133 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 5750 transitions. [2021-10-13 17:55:28,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 5750 transitions. [2021-10-13 17:55:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:28,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:28,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:28,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-10-13 17:55:28,136 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:28,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1374161165, now seen corresponding path program 177 times [2021-10-13 17:55:28,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:28,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821145283] [2021-10-13 17:55:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:28,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:28,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:28,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821145283] [2021-10-13 17:55:28,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821145283] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:28,218 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:28,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:28,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167354720] [2021-10-13 17:55:28,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:28,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:28,220 INFO L87 Difference]: Start difference. First operand 2054 states and 5750 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:28,569 INFO L93 Difference]: Finished difference Result 2662 states and 7149 transitions. [2021-10-13 17:55:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:28,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:28,574 INFO L225 Difference]: With dead ends: 2662 [2021-10-13 17:55:28,574 INFO L226 Difference]: Without dead ends: 2654 [2021-10-13 17:55:28,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 139.3ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:28,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2021-10-13 17:55:28,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2074. [2021-10-13 17:55:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 2073 states have (on average 2.7998070429329474) internal successors, (5804), 2073 states have internal predecessors, (5804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5804 transitions. [2021-10-13 17:55:28,608 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5804 transitions. Word has length 38 [2021-10-13 17:55:28,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:28,608 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 5804 transitions. [2021-10-13 17:55:28,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:28,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5804 transitions. [2021-10-13 17:55:28,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:28,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:28,611 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:28,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-10-13 17:55:28,612 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1834505901, now seen corresponding path program 178 times [2021-10-13 17:55:28,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:28,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178882699] [2021-10-13 17:55:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:28,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:28,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:28,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178882699] [2021-10-13 17:55:28,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178882699] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:28,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:28,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:28,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168641592] [2021-10-13 17:55:28,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:28,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:28,700 INFO L87 Difference]: Start difference. First operand 2074 states and 5804 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:29,117 INFO L93 Difference]: Finished difference Result 2670 states and 7151 transitions. [2021-10-13 17:55:29,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:29,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:29,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:29,122 INFO L225 Difference]: With dead ends: 2670 [2021-10-13 17:55:29,122 INFO L226 Difference]: Without dead ends: 2634 [2021-10-13 17:55:29,123 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 172.9ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-10-13 17:55:29,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2070. [2021-10-13 17:55:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.7994200096665054) internal successors, (5792), 2069 states have internal predecessors, (5792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5792 transitions. [2021-10-13 17:55:29,156 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5792 transitions. Word has length 38 [2021-10-13 17:55:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:29,156 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5792 transitions. [2021-10-13 17:55:29,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5792 transitions. [2021-10-13 17:55:29,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:29,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:29,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:29,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-10-13 17:55:29,160 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:29,160 INFO L82 PathProgramCache]: Analyzing trace with hash -983521059, now seen corresponding path program 179 times [2021-10-13 17:55:29,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:29,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111195824] [2021-10-13 17:55:29,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:29,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:29,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:29,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111195824] [2021-10-13 17:55:29,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111195824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:29,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:29,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:29,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665666266] [2021-10-13 17:55:29,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:29,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:29,245 INFO L87 Difference]: Start difference. First operand 2070 states and 5792 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:29,612 INFO L93 Difference]: Finished difference Result 2552 states and 6904 transitions. [2021-10-13 17:55:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:29,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:29,619 INFO L225 Difference]: With dead ends: 2552 [2021-10-13 17:55:29,620 INFO L226 Difference]: Without dead ends: 2544 [2021-10-13 17:55:29,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 146.9ms TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-10-13 17:55:29,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2072. [2021-10-13 17:55:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2072 states, 2071 states have (on average 2.7981651376146788) internal successors, (5795), 2071 states have internal predecessors, (5795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 5795 transitions. [2021-10-13 17:55:29,670 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 5795 transitions. Word has length 38 [2021-10-13 17:55:29,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:29,670 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 5795 transitions. [2021-10-13 17:55:29,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 5795 transitions. [2021-10-13 17:55:29,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:29,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:29,675 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:29,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-10-13 17:55:29,675 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:29,676 INFO L82 PathProgramCache]: Analyzing trace with hash 786242733, now seen corresponding path program 180 times [2021-10-13 17:55:29,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:29,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543582306] [2021-10-13 17:55:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:29,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:29,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:29,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543582306] [2021-10-13 17:55:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543582306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:29,766 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699324261] [2021-10-13 17:55:29,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:29,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:29,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:29,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:29,767 INFO L87 Difference]: Start difference. First operand 2072 states and 5795 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:30,202 INFO L93 Difference]: Finished difference Result 2566 states and 6933 transitions. [2021-10-13 17:55:30,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:30,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:30,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:30,207 INFO L225 Difference]: With dead ends: 2566 [2021-10-13 17:55:30,207 INFO L226 Difference]: Without dead ends: 2558 [2021-10-13 17:55:30,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:30,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-10-13 17:55:30,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2070. [2021-10-13 17:55:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 2069 states have (on average 2.7984533591106815) internal successors, (5790), 2069 states have internal predecessors, (5790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5790 transitions. [2021-10-13 17:55:30,242 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5790 transitions. Word has length 38 [2021-10-13 17:55:30,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:30,242 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5790 transitions. [2021-10-13 17:55:30,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5790 transitions. [2021-10-13 17:55:30,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:30,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:30,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:30,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-10-13 17:55:30,245 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:30,246 INFO L82 PathProgramCache]: Analyzing trace with hash 599239123, now seen corresponding path program 181 times [2021-10-13 17:55:30,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:30,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643607276] [2021-10-13 17:55:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:30,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:30,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:30,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:30,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643607276] [2021-10-13 17:55:30,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643607276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:30,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:30,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:30,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141368024] [2021-10-13 17:55:30,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:30,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:30,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:30,336 INFO L87 Difference]: Start difference. First operand 2070 states and 5790 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:30,801 INFO L93 Difference]: Finished difference Result 2574 states and 6943 transitions. [2021-10-13 17:55:30,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:30,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:30,806 INFO L225 Difference]: With dead ends: 2574 [2021-10-13 17:55:30,806 INFO L226 Difference]: Without dead ends: 2540 [2021-10-13 17:55:30,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 191.5ms TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-10-13 17:55:30,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2064. [2021-10-13 17:55:30,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 2063 states have (on average 2.7944740668928745) internal successors, (5765), 2063 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5765 transitions. [2021-10-13 17:55:30,865 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5765 transitions. Word has length 38 [2021-10-13 17:55:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:30,865 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 5765 transitions. [2021-10-13 17:55:30,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5765 transitions. [2021-10-13 17:55:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:30,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:30,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:30,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-10-13 17:55:30,868 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:30,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:30,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1908658179, now seen corresponding path program 182 times [2021-10-13 17:55:30,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:30,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884989864] [2021-10-13 17:55:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:30,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:30,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:30,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884989864] [2021-10-13 17:55:30,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884989864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:30,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:30,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:30,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934447081] [2021-10-13 17:55:30,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:30,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:30,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:30,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:30,963 INFO L87 Difference]: Start difference. First operand 2064 states and 5765 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:31,428 INFO L93 Difference]: Finished difference Result 2562 states and 6917 transitions. [2021-10-13 17:55:31,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:31,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:31,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:31,433 INFO L225 Difference]: With dead ends: 2562 [2021-10-13 17:55:31,433 INFO L226 Difference]: Without dead ends: 2538 [2021-10-13 17:55:31,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 214.0ms TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:55:31,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-10-13 17:55:31,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2054. [2021-10-13 17:55:31,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2054 states, 2053 states have (on average 2.79980516317584) internal successors, (5748), 2053 states have internal predecessors, (5748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 5748 transitions. [2021-10-13 17:55:31,465 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 5748 transitions. Word has length 38 [2021-10-13 17:55:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:31,465 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 5748 transitions. [2021-10-13 17:55:31,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 5748 transitions. [2021-10-13 17:55:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:31,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:31,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:31,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-10-13 17:55:31,469 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:31,469 INFO L82 PathProgramCache]: Analyzing trace with hash -652626957, now seen corresponding path program 183 times [2021-10-13 17:55:31,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:31,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871133168] [2021-10-13 17:55:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:31,470 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:31,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:31,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871133168] [2021-10-13 17:55:31,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871133168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:31,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:31,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:31,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46818638] [2021-10-13 17:55:31,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:31,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:31,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:31,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:31,547 INFO L87 Difference]: Start difference. First operand 2054 states and 5748 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:31,849 INFO L93 Difference]: Finished difference Result 2360 states and 6445 transitions. [2021-10-13 17:55:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:55:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:31,854 INFO L225 Difference]: With dead ends: 2360 [2021-10-13 17:55:31,854 INFO L226 Difference]: Without dead ends: 2268 [2021-10-13 17:55:31,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:55:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-10-13 17:55:31,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2066. [2021-10-13 17:55:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2065 states have (on average 2.7932203389830508) internal successors, (5768), 2065 states have internal predecessors, (5768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 5768 transitions. [2021-10-13 17:55:31,884 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 5768 transitions. Word has length 38 [2021-10-13 17:55:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:31,884 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 5768 transitions. [2021-10-13 17:55:31,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 5768 transitions. [2021-10-13 17:55:31,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:31,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:31,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:31,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-10-13 17:55:31,887 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash -160297917, now seen corresponding path program 184 times [2021-10-13 17:55:31,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:31,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978727379] [2021-10-13 17:55:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:31,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:32,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:32,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978727379] [2021-10-13 17:55:32,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978727379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:32,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:32,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:32,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333296203] [2021-10-13 17:55:32,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:32,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:32,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:32,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:32,008 INFO L87 Difference]: Start difference. First operand 2066 states and 5768 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:32,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:32,539 INFO L93 Difference]: Finished difference Result 2338 states and 6383 transitions. [2021-10-13 17:55:32,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:32,540 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:32,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:32,544 INFO L225 Difference]: With dead ends: 2338 [2021-10-13 17:55:32,544 INFO L226 Difference]: Without dead ends: 2310 [2021-10-13 17:55:32,544 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 247.3ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-10-13 17:55:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2080. [2021-10-13 17:55:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2079 states have (on average 2.7854737854737857) internal successors, (5791), 2079 states have internal predecessors, (5791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5791 transitions. [2021-10-13 17:55:32,574 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5791 transitions. Word has length 38 [2021-10-13 17:55:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:32,575 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5791 transitions. [2021-10-13 17:55:32,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:32,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5791 transitions. [2021-10-13 17:55:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:32,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:32,579 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:32,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-10-13 17:55:32,580 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:32,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1801156115, now seen corresponding path program 185 times [2021-10-13 17:55:32,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:32,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067115773] [2021-10-13 17:55:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:32,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:32,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:32,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067115773] [2021-10-13 17:55:32,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067115773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:32,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:32,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:32,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380010860] [2021-10-13 17:55:32,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:32,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:32,687 INFO L87 Difference]: Start difference. First operand 2080 states and 5791 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:33,154 INFO L93 Difference]: Finished difference Result 2632 states and 7044 transitions. [2021-10-13 17:55:33,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:33,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:33,159 INFO L225 Difference]: With dead ends: 2632 [2021-10-13 17:55:33,159 INFO L226 Difference]: Without dead ends: 2624 [2021-10-13 17:55:33,159 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 215.6ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-10-13 17:55:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2086. [2021-10-13 17:55:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 2085 states have (on average 2.7827338129496404) internal successors, (5802), 2085 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5802 transitions. [2021-10-13 17:55:33,191 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5802 transitions. Word has length 38 [2021-10-13 17:55:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:33,191 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5802 transitions. [2021-10-13 17:55:33,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5802 transitions. [2021-10-13 17:55:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:33,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:33,194 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:33,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-10-13 17:55:33,194 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:33,195 INFO L82 PathProgramCache]: Analyzing trace with hash -724047389, now seen corresponding path program 186 times [2021-10-13 17:55:33,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:33,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734410032] [2021-10-13 17:55:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:33,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:33,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:33,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734410032] [2021-10-13 17:55:33,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734410032] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:33,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:33,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:33,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854485808] [2021-10-13 17:55:33,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:33,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:33,309 INFO L87 Difference]: Start difference. First operand 2086 states and 5802 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:33,887 INFO L93 Difference]: Finished difference Result 2672 states and 7118 transitions. [2021-10-13 17:55:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 17:55:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:33,891 INFO L225 Difference]: With dead ends: 2672 [2021-10-13 17:55:33,891 INFO L226 Difference]: Without dead ends: 2638 [2021-10-13 17:55:33,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 268.5ms TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-10-13 17:55:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-10-13 17:55:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2062. [2021-10-13 17:55:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 2.7918486171761283) internal successors, (5754), 2061 states have internal predecessors, (5754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5754 transitions. [2021-10-13 17:55:33,924 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5754 transitions. Word has length 38 [2021-10-13 17:55:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:33,924 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5754 transitions. [2021-10-13 17:55:33,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5754 transitions. [2021-10-13 17:55:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:33,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:33,927 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:33,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-10-13 17:55:33,928 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:33,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:33,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1007731565, now seen corresponding path program 187 times [2021-10-13 17:55:33,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:33,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509252493] [2021-10-13 17:55:33,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:33,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:34,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:34,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509252493] [2021-10-13 17:55:34,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509252493] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:34,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:34,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:34,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105810440] [2021-10-13 17:55:34,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:34,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:34,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:34,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:34,044 INFO L87 Difference]: Start difference. First operand 2062 states and 5754 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:34,401 INFO L93 Difference]: Finished difference Result 2250 states and 6179 transitions. [2021-10-13 17:55:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:34,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:34,406 INFO L225 Difference]: With dead ends: 2250 [2021-10-13 17:55:34,406 INFO L226 Difference]: Without dead ends: 2234 [2021-10-13 17:55:34,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-13 17:55:34,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2060. [2021-10-13 17:55:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.7921321029626034) internal successors, (5749), 2059 states have internal predecessors, (5749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5749 transitions. [2021-10-13 17:55:34,436 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5749 transitions. Word has length 38 [2021-10-13 17:55:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:34,436 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5749 transitions. [2021-10-13 17:55:34,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5749 transitions. [2021-10-13 17:55:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:34,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:34,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:34,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-10-13 17:55:34,440 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1835938237, now seen corresponding path program 188 times [2021-10-13 17:55:34,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:34,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104132704] [2021-10-13 17:55:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:34,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:34,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:34,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104132704] [2021-10-13 17:55:34,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104132704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:34,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:34,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:34,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683430696] [2021-10-13 17:55:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:34,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:34,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:34,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:34,552 INFO L87 Difference]: Start difference. First operand 2060 states and 5749 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:35,119 INFO L93 Difference]: Finished difference Result 2334 states and 6352 transitions. [2021-10-13 17:55:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:35,124 INFO L225 Difference]: With dead ends: 2334 [2021-10-13 17:55:35,124 INFO L226 Difference]: Without dead ends: 2314 [2021-10-13 17:55:35,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 203.0ms TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-10-13 17:55:35,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2066. [2021-10-13 17:55:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2065 states have (on average 2.788377723970944) internal successors, (5758), 2065 states have internal predecessors, (5758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 5758 transitions. [2021-10-13 17:55:35,155 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 5758 transitions. Word has length 38 [2021-10-13 17:55:35,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:35,156 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 5758 transitions. [2021-10-13 17:55:35,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 5758 transitions. [2021-10-13 17:55:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:35,161 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:35,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:35,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-10-13 17:55:35,162 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:35,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1550188151, now seen corresponding path program 189 times [2021-10-13 17:55:35,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:35,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690216250] [2021-10-13 17:55:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:35,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:35,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:35,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690216250] [2021-10-13 17:55:35,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690216250] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:35,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:35,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:35,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983254306] [2021-10-13 17:55:35,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:35,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:35,286 INFO L87 Difference]: Start difference. First operand 2066 states and 5758 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:35,827 INFO L93 Difference]: Finished difference Result 2588 states and 6942 transitions. [2021-10-13 17:55:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:35,828 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:35,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:35,832 INFO L225 Difference]: With dead ends: 2588 [2021-10-13 17:55:35,832 INFO L226 Difference]: Without dead ends: 2570 [2021-10-13 17:55:35,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 233.5ms TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-10-13 17:55:35,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2068. [2021-10-13 17:55:35,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2067 states have (on average 2.7871311078858247) internal successors, (5761), 2067 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 5761 transitions. [2021-10-13 17:55:35,864 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 5761 transitions. Word has length 38 [2021-10-13 17:55:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:35,866 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 5761 transitions. [2021-10-13 17:55:35,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:35,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 5761 transitions. [2021-10-13 17:55:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:35,870 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:35,870 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-10-13 17:55:35,871 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash -240769095, now seen corresponding path program 190 times [2021-10-13 17:55:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:35,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176686103] [2021-10-13 17:55:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:35,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:36,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:36,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176686103] [2021-10-13 17:55:36,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176686103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:36,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:36,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:36,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070148688] [2021-10-13 17:55:36,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:36,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:36,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:36,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:36,007 INFO L87 Difference]: Start difference. First operand 2068 states and 5761 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:36,640 INFO L93 Difference]: Finished difference Result 2628 states and 7018 transitions. [2021-10-13 17:55:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-13 17:55:36,640 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:36,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:36,644 INFO L225 Difference]: With dead ends: 2628 [2021-10-13 17:55:36,644 INFO L226 Difference]: Without dead ends: 2606 [2021-10-13 17:55:36,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:55:36,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-10-13 17:55:36,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2060. [2021-10-13 17:55:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 2059 states have (on average 2.7911607576493442) internal successors, (5747), 2059 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:36,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5747 transitions. [2021-10-13 17:55:36,675 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5747 transitions. Word has length 38 [2021-10-13 17:55:36,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:36,675 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5747 transitions. [2021-10-13 17:55:36,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:36,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5747 transitions. [2021-10-13 17:55:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:36,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:36,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:36,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-10-13 17:55:36,678 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:36,679 INFO L82 PathProgramCache]: Analyzing trace with hash 2065816515, now seen corresponding path program 191 times [2021-10-13 17:55:36,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:36,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985266426] [2021-10-13 17:55:36,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:36,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:36,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:36,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985266426] [2021-10-13 17:55:36,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985266426] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:36,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:36,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:36,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946241115] [2021-10-13 17:55:36,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:36,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:36,808 INFO L87 Difference]: Start difference. First operand 2060 states and 5747 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:37,242 INFO L93 Difference]: Finished difference Result 2248 states and 6166 transitions. [2021-10-13 17:55:37,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:37,242 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:37,246 INFO L225 Difference]: With dead ends: 2248 [2021-10-13 17:55:37,246 INFO L226 Difference]: Without dead ends: 2216 [2021-10-13 17:55:37,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 206.5ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2021-10-13 17:55:37,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2052. [2021-10-13 17:55:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 2.794246708922477) internal successors, (5731), 2051 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5731 transitions. [2021-10-13 17:55:37,278 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5731 transitions. Word has length 38 [2021-10-13 17:55:37,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:37,278 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5731 transitions. [2021-10-13 17:55:37,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5731 transitions. [2021-10-13 17:55:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:37,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:37,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:37,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-10-13 17:55:37,283 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:37,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2097110799, now seen corresponding path program 192 times [2021-10-13 17:55:37,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:37,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553021367] [2021-10-13 17:55:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:37,284 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:37,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:37,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553021367] [2021-10-13 17:55:37,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553021367] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:37,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:37,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:37,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906064188] [2021-10-13 17:55:37,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:37,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:37,388 INFO L87 Difference]: Start difference. First operand 2052 states and 5731 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:37,754 INFO L93 Difference]: Finished difference Result 2450 states and 6620 transitions. [2021-10-13 17:55:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:37,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:37,758 INFO L225 Difference]: With dead ends: 2450 [2021-10-13 17:55:37,758 INFO L226 Difference]: Without dead ends: 2442 [2021-10-13 17:55:37,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:55:37,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-10-13 17:55:37,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2058. [2021-10-13 17:55:37,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2058 states, 2057 states have (on average 2.7953330092367525) internal successors, (5750), 2057 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 5750 transitions. [2021-10-13 17:55:37,787 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 5750 transitions. Word has length 38 [2021-10-13 17:55:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:37,787 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 5750 transitions. [2021-10-13 17:55:37,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 5750 transitions. [2021-10-13 17:55:37,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:37,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:37,790 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:37,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-10-13 17:55:37,790 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1737511761, now seen corresponding path program 193 times [2021-10-13 17:55:37,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:37,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32192715] [2021-10-13 17:55:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:37,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:37,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:37,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32192715] [2021-10-13 17:55:37,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32192715] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:37,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:37,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:37,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980902931] [2021-10-13 17:55:37,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:37,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:37,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:37,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:37,871 INFO L87 Difference]: Start difference. First operand 2058 states and 5750 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:38,318 INFO L93 Difference]: Finished difference Result 2428 states and 6549 transitions. [2021-10-13 17:55:38,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:38,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:38,323 INFO L225 Difference]: With dead ends: 2428 [2021-10-13 17:55:38,323 INFO L226 Difference]: Without dead ends: 2392 [2021-10-13 17:55:38,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2021-10-13 17:55:38,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2050. [2021-10-13 17:55:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 2049 states have (on average 2.793557833089312) internal successors, (5724), 2049 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 5724 transitions. [2021-10-13 17:55:38,352 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 5724 transitions. Word has length 38 [2021-10-13 17:55:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:38,352 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 5724 transitions. [2021-10-13 17:55:38,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 5724 transitions. [2021-10-13 17:55:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:38,355 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:38,355 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:38,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-10-13 17:55:38,355 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash -260571425, now seen corresponding path program 194 times [2021-10-13 17:55:38,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:38,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190198067] [2021-10-13 17:55:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:38,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:38,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:38,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:38,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190198067] [2021-10-13 17:55:38,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190198067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:38,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:38,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:38,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44812903] [2021-10-13 17:55:38,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:38,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:38,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:38,439 INFO L87 Difference]: Start difference. First operand 2050 states and 5724 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:38,809 INFO L93 Difference]: Finished difference Result 2472 states and 6655 transitions. [2021-10-13 17:55:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:55:38,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:38,813 INFO L225 Difference]: With dead ends: 2472 [2021-10-13 17:55:38,813 INFO L226 Difference]: Without dead ends: 2464 [2021-10-13 17:55:38,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 138.3ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:55:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2021-10-13 17:55:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2050. [2021-10-13 17:55:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 2049 states have (on average 2.792581747193753) internal successors, (5722), 2049 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 5722 transitions. [2021-10-13 17:55:38,842 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 5722 transitions. Word has length 38 [2021-10-13 17:55:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:38,843 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 5722 transitions. [2021-10-13 17:55:38,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 5722 transitions. [2021-10-13 17:55:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:38,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:38,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:38,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-10-13 17:55:38,846 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:38,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1509192367, now seen corresponding path program 195 times [2021-10-13 17:55:38,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:38,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589598462] [2021-10-13 17:55:38,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:38,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:38,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589598462] [2021-10-13 17:55:38,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589598462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:38,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:38,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:38,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891275659] [2021-10-13 17:55:38,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:38,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:38,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:38,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:38,932 INFO L87 Difference]: Start difference. First operand 2050 states and 5722 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:39,375 INFO L93 Difference]: Finished difference Result 2486 states and 6676 transitions. [2021-10-13 17:55:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:39,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:39,380 INFO L225 Difference]: With dead ends: 2486 [2021-10-13 17:55:39,380 INFO L226 Difference]: Without dead ends: 2478 [2021-10-13 17:55:39,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 175.0ms TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-10-13 17:55:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2048. [2021-10-13 17:55:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2048 states, 2047 states have (on average 2.792867611138251) internal successors, (5717), 2047 states have internal predecessors, (5717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5717 transitions. [2021-10-13 17:55:39,432 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5717 transitions. Word has length 38 [2021-10-13 17:55:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:39,432 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5717 transitions. [2021-10-13 17:55:39,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5717 transitions. [2021-10-13 17:55:39,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:39,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:39,435 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:39,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-10-13 17:55:39,435 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:39,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:39,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1322188757, now seen corresponding path program 196 times [2021-10-13 17:55:39,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:39,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690118566] [2021-10-13 17:55:39,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:39,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:39,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690118566] [2021-10-13 17:55:39,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690118566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:39,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:39,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:39,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582534794] [2021-10-13 17:55:39,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:39,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:39,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:39,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:39,518 INFO L87 Difference]: Start difference. First operand 2048 states and 5717 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:39,951 INFO L93 Difference]: Finished difference Result 2424 states and 6527 transitions. [2021-10-13 17:55:39,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:39,951 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:39,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:39,956 INFO L225 Difference]: With dead ends: 2424 [2021-10-13 17:55:39,956 INFO L226 Difference]: Without dead ends: 2390 [2021-10-13 17:55:39,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 158.7ms TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-10-13 17:55:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2042. [2021-10-13 17:55:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2042 states, 2041 states have (on average 2.788829005389515) internal successors, (5692), 2041 states have internal predecessors, (5692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 5692 transitions. [2021-10-13 17:55:39,987 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 5692 transitions. Word has length 38 [2021-10-13 17:55:39,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:39,987 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 5692 transitions. [2021-10-13 17:55:39,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 5692 transitions. [2021-10-13 17:55:39,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:39,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:39,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:39,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-10-13 17:55:39,990 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1663359483, now seen corresponding path program 197 times [2021-10-13 17:55:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:39,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622571704] [2021-10-13 17:55:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:39,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:40,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:40,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622571704] [2021-10-13 17:55:40,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622571704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:40,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:40,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:40,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190728519] [2021-10-13 17:55:40,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:40,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:40,087 INFO L87 Difference]: Start difference. First operand 2042 states and 5692 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:40,579 INFO L93 Difference]: Finished difference Result 2412 states and 6485 transitions. [2021-10-13 17:55:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:40,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:40,584 INFO L225 Difference]: With dead ends: 2412 [2021-10-13 17:55:40,584 INFO L226 Difference]: Without dead ends: 2388 [2021-10-13 17:55:40,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-10-13 17:55:40,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2032. [2021-10-13 17:55:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2032 states, 2031 states have (on average 2.794190054160512) internal successors, (5675), 2031 states have internal predecessors, (5675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 5675 transitions. [2021-10-13 17:55:40,617 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 5675 transitions. Word has length 38 [2021-10-13 17:55:40,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:40,618 INFO L470 AbstractCegarLoop]: Abstraction has 2032 states and 5675 transitions. [2021-10-13 17:55:40,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:40,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5675 transitions. [2021-10-13 17:55:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:40,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:40,621 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-10-13 17:55:40,621 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:40,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash 545486485, now seen corresponding path program 198 times [2021-10-13 17:55:40,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:40,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857944176] [2021-10-13 17:55:40,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:40,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:40,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:40,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857944176] [2021-10-13 17:55:40,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857944176] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:40,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:40,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:40,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282225433] [2021-10-13 17:55:40,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:40,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:40,708 INFO L87 Difference]: Start difference. First operand 2032 states and 5675 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:41,083 INFO L93 Difference]: Finished difference Result 2182 states and 5965 transitions. [2021-10-13 17:55:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:55:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:41,088 INFO L225 Difference]: With dead ends: 2182 [2021-10-13 17:55:41,088 INFO L226 Difference]: Without dead ends: 2088 [2021-10-13 17:55:41,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:55:41,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-10-13 17:55:41,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2024. [2021-10-13 17:55:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2024 states, 2023 states have (on average 2.795353435491844) internal successors, (5655), 2023 states have internal predecessors, (5655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 5655 transitions. [2021-10-13 17:55:41,120 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 5655 transitions. Word has length 38 [2021-10-13 17:55:41,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:41,120 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 5655 transitions. [2021-10-13 17:55:41,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 5655 transitions. [2021-10-13 17:55:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:41,124 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:41,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:41,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-10-13 17:55:41,124 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:41,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:41,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1730681199, now seen corresponding path program 199 times [2021-10-13 17:55:41,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:41,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286496156] [2021-10-13 17:55:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:41,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:41,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:41,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286496156] [2021-10-13 17:55:41,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286496156] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:41,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:41,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:41,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153785264] [2021-10-13 17:55:41,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:41,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:41,239 INFO L87 Difference]: Start difference. First operand 2024 states and 5655 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:41,785 INFO L93 Difference]: Finished difference Result 2138 states and 5876 transitions. [2021-10-13 17:55:41,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:41,785 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:41,789 INFO L225 Difference]: With dead ends: 2138 [2021-10-13 17:55:41,789 INFO L226 Difference]: Without dead ends: 2122 [2021-10-13 17:55:41,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 259.9ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-10-13 17:55:41,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2022. [2021-10-13 17:55:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 2021 states have (on average 2.7956457199406235) internal successors, (5650), 2021 states have internal predecessors, (5650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 5650 transitions. [2021-10-13 17:55:41,819 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 5650 transitions. Word has length 38 [2021-10-13 17:55:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:41,819 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 5650 transitions. [2021-10-13 17:55:41,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 5650 transitions. [2021-10-13 17:55:41,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:41,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:41,822 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:41,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-10-13 17:55:41,823 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:41,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:41,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1506201147, now seen corresponding path program 200 times [2021-10-13 17:55:41,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:41,823 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496655741] [2021-10-13 17:55:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:41,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:41,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:41,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496655741] [2021-10-13 17:55:41,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496655741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:41,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:41,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:41,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138635569] [2021-10-13 17:55:41,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:41,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:41,960 INFO L87 Difference]: Start difference. First operand 2022 states and 5650 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:42,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:42,525 INFO L93 Difference]: Finished difference Result 2180 states and 5960 transitions. [2021-10-13 17:55:42,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:42,529 INFO L225 Difference]: With dead ends: 2180 [2021-10-13 17:55:42,530 INFO L226 Difference]: Without dead ends: 2154 [2021-10-13 17:55:42,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 241.2ms TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:42,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-10-13 17:55:42,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2018. [2021-10-13 17:55:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 2017 states have (on average 2.797223599405057) internal successors, (5642), 2017 states have internal predecessors, (5642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:42,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 5642 transitions. [2021-10-13 17:55:42,559 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 5642 transitions. Word has length 38 [2021-10-13 17:55:42,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:42,559 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 5642 transitions. [2021-10-13 17:55:42,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 5642 transitions. [2021-10-13 17:55:42,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:42,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:42,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:42,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-10-13 17:55:42,562 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:42,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:42,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1390755681, now seen corresponding path program 201 times [2021-10-13 17:55:42,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:42,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049179041] [2021-10-13 17:55:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:42,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:42,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:42,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049179041] [2021-10-13 17:55:42,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049179041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:42,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:42,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:42,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319868974] [2021-10-13 17:55:42,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:42,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:42,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:42,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:42,661 INFO L87 Difference]: Start difference. First operand 2018 states and 5642 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:42,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:42,973 INFO L93 Difference]: Finished difference Result 1930 states and 5399 transitions. [2021-10-13 17:55:42,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:55:42,973 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:42,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:42,979 INFO L225 Difference]: With dead ends: 1930 [2021-10-13 17:55:42,979 INFO L226 Difference]: Without dead ends: 1798 [2021-10-13 17:55:42,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-13 17:55:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-10-13 17:55:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1736. [2021-10-13 17:55:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1735 states have (on average 2.8697406340057636) internal successors, (4979), 1735 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 4979 transitions. [2021-10-13 17:55:43,026 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 4979 transitions. Word has length 38 [2021-10-13 17:55:43,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:43,026 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 4979 transitions. [2021-10-13 17:55:43,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 4979 transitions. [2021-10-13 17:55:43,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:43,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:43,031 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:43,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-10-13 17:55:43,031 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:43,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:43,032 INFO L82 PathProgramCache]: Analyzing trace with hash -898426641, now seen corresponding path program 202 times [2021-10-13 17:55:43,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:43,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207932380] [2021-10-13 17:55:43,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:43,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:43,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:43,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207932380] [2021-10-13 17:55:43,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207932380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:43,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:43,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:43,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535880433] [2021-10-13 17:55:43,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:43,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:43,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:43,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:43,157 INFO L87 Difference]: Start difference. First operand 1736 states and 4979 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:43,601 INFO L93 Difference]: Finished difference Result 1798 states and 5090 transitions. [2021-10-13 17:55:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:43,602 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:43,605 INFO L225 Difference]: With dead ends: 1798 [2021-10-13 17:55:43,605 INFO L226 Difference]: Without dead ends: 1786 [2021-10-13 17:55:43,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 157.2ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:55:43,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-10-13 17:55:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1736. [2021-10-13 17:55:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1736 states, 1735 states have (on average 2.8662824207492794) internal successors, (4973), 1735 states have internal predecessors, (4973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 4973 transitions. [2021-10-13 17:55:43,628 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 4973 transitions. Word has length 38 [2021-10-13 17:55:43,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:43,629 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 4973 transitions. [2021-10-13 17:55:43,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:43,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 4973 transitions. [2021-10-13 17:55:43,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:43,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:43,631 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:43,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-10-13 17:55:43,632 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:43,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:43,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1063027391, now seen corresponding path program 203 times [2021-10-13 17:55:43,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:43,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217534829] [2021-10-13 17:55:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:43,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:43,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:43,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217534829] [2021-10-13 17:55:43,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217534829] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:43,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:43,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:43,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890649419] [2021-10-13 17:55:43,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:43,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:43,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:43,728 INFO L87 Difference]: Start difference. First operand 1736 states and 4973 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:44,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:44,227 INFO L93 Difference]: Finished difference Result 2064 states and 5699 transitions. [2021-10-13 17:55:44,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:55:44,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:44,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:44,231 INFO L225 Difference]: With dead ends: 2064 [2021-10-13 17:55:44,231 INFO L226 Difference]: Without dead ends: 2056 [2021-10-13 17:55:44,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 175.5ms TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:44,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-10-13 17:55:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1732. [2021-10-13 17:55:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 2.8671288272674755) internal successors, (4963), 1731 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:44,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 4963 transitions. [2021-10-13 17:55:44,257 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 4963 transitions. Word has length 38 [2021-10-13 17:55:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:44,257 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 4963 transitions. [2021-10-13 17:55:44,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 4963 transitions. [2021-10-13 17:55:44,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:44,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:44,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:44,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-10-13 17:55:44,260 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:44,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:44,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1462176113, now seen corresponding path program 204 times [2021-10-13 17:55:44,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:44,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126664611] [2021-10-13 17:55:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:44,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:44,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:44,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126664611] [2021-10-13 17:55:44,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126664611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:44,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:44,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:44,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616016637] [2021-10-13 17:55:44,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:44,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:44,363 INFO L87 Difference]: Start difference. First operand 1732 states and 4963 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:44,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:44,977 INFO L93 Difference]: Finished difference Result 2100 states and 5769 transitions. [2021-10-13 17:55:44,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:44,978 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:44,981 INFO L225 Difference]: With dead ends: 2100 [2021-10-13 17:55:44,981 INFO L226 Difference]: Without dead ends: 2086 [2021-10-13 17:55:44,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 216.5ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2021-10-13 17:55:45,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1724. [2021-10-13 17:55:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.8723157283807312) internal successors, (4949), 1723 states have internal predecessors, (4949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:45,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4949 transitions. [2021-10-13 17:55:45,008 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4949 transitions. Word has length 38 [2021-10-13 17:55:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:45,008 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 4949 transitions. [2021-10-13 17:55:45,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4949 transitions. [2021-10-13 17:55:45,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:45,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:45,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:45,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-10-13 17:55:45,011 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:45,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:45,011 INFO L82 PathProgramCache]: Analyzing trace with hash 269602841, now seen corresponding path program 205 times [2021-10-13 17:55:45,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:45,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543797687] [2021-10-13 17:55:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:45,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:45,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:45,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543797687] [2021-10-13 17:55:45,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543797687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:45,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:45,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:45,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141868326] [2021-10-13 17:55:45,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:45,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:45,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:45,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:45,104 INFO L87 Difference]: Start difference. First operand 1724 states and 4949 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:45,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:45,563 INFO L93 Difference]: Finished difference Result 1786 states and 5060 transitions. [2021-10-13 17:55:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:45,564 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:45,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:45,566 INFO L225 Difference]: With dead ends: 1786 [2021-10-13 17:55:45,567 INFO L226 Difference]: Without dead ends: 1770 [2021-10-13 17:55:45,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 206.3ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-10-13 17:55:45,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1722. [2021-10-13 17:55:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1721 states have (on average 2.872748402091807) internal successors, (4944), 1721 states have internal predecessors, (4944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 4944 transitions. [2021-10-13 17:55:45,589 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 4944 transitions. Word has length 38 [2021-10-13 17:55:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:45,589 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 4944 transitions. [2021-10-13 17:55:45,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 4944 transitions. [2021-10-13 17:55:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:45,592 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:45,592 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:45,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-10-13 17:55:45,592 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:45,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:45,592 INFO L82 PathProgramCache]: Analyzing trace with hash -936201083, now seen corresponding path program 206 times [2021-10-13 17:55:45,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:45,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441683684] [2021-10-13 17:55:45,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:45,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:45,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:45,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441683684] [2021-10-13 17:55:45,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441683684] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:45,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:45,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:45,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452154829] [2021-10-13 17:55:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:45,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:45,687 INFO L87 Difference]: Start difference. First operand 1722 states and 4944 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:46,134 INFO L93 Difference]: Finished difference Result 1802 states and 5082 transitions. [2021-10-13 17:55:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:46,137 INFO L225 Difference]: With dead ends: 1802 [2021-10-13 17:55:46,137 INFO L226 Difference]: Without dead ends: 1776 [2021-10-13 17:55:46,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 187.4ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:46,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-10-13 17:55:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1716. [2021-10-13 17:55:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 2.871720116618076) internal successors, (4925), 1715 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 4925 transitions. [2021-10-13 17:55:46,160 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 4925 transitions. Word has length 38 [2021-10-13 17:55:46,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:46,160 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 4925 transitions. [2021-10-13 17:55:46,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 4925 transitions. [2021-10-13 17:55:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:46,162 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:46,163 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:46,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-10-13 17:55:46,163 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:46,163 INFO L82 PathProgramCache]: Analyzing trace with hash 161795417, now seen corresponding path program 207 times [2021-10-13 17:55:46,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:46,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593914042] [2021-10-13 17:55:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:46,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:46,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:46,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:46,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593914042] [2021-10-13 17:55:46,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593914042] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:46,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:46,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:46,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350309615] [2021-10-13 17:55:46,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:46,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:46,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:46,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:46,260 INFO L87 Difference]: Start difference. First operand 1716 states and 4925 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:46,668 INFO L93 Difference]: Finished difference Result 1822 states and 5133 transitions. [2021-10-13 17:55:46,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:46,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:46,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:46,671 INFO L225 Difference]: With dead ends: 1822 [2021-10-13 17:55:46,671 INFO L226 Difference]: Without dead ends: 1802 [2021-10-13 17:55:46,672 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 170.1ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-10-13 17:55:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1716. [2021-10-13 17:55:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1715 states have (on average 2.868221574344023) internal successors, (4919), 1715 states have internal predecessors, (4919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 4919 transitions. [2021-10-13 17:55:46,695 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 4919 transitions. Word has length 38 [2021-10-13 17:55:46,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:46,695 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 4919 transitions. [2021-10-13 17:55:46,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:46,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 4919 transitions. [2021-10-13 17:55:46,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:46,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:46,698 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:46,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-10-13 17:55:46,698 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:46,698 INFO L82 PathProgramCache]: Analyzing trace with hash 447545503, now seen corresponding path program 208 times [2021-10-13 17:55:46,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:46,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743819611] [2021-10-13 17:55:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:46,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:46,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:46,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743819611] [2021-10-13 17:55:46,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743819611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:46,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:46,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:46,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476954421] [2021-10-13 17:55:46,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:46,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:46,803 INFO L87 Difference]: Start difference. First operand 1716 states and 4919 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:47,340 INFO L93 Difference]: Finished difference Result 2034 states and 5630 transitions. [2021-10-13 17:55:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:47,343 INFO L225 Difference]: With dead ends: 2034 [2021-10-13 17:55:47,343 INFO L226 Difference]: Without dead ends: 2016 [2021-10-13 17:55:47,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 198.6ms TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:55:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-10-13 17:55:47,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1710. [2021-10-13 17:55:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1709 states have (on average 2.8695143358689292) internal successors, (4904), 1709 states have internal predecessors, (4904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 4904 transitions. [2021-10-13 17:55:47,368 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 4904 transitions. Word has length 38 [2021-10-13 17:55:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:47,368 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 4904 transitions. [2021-10-13 17:55:47,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 4904 transitions. [2021-10-13 17:55:47,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:47,370 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:47,370 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:47,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-10-13 17:55:47,370 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:47,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:47,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1756964559, now seen corresponding path program 209 times [2021-10-13 17:55:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:47,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761815931] [2021-10-13 17:55:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:47,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:47,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:47,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761815931] [2021-10-13 17:55:47,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761815931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:47,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:47,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:47,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480068964] [2021-10-13 17:55:47,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:47,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:47,485 INFO L87 Difference]: Start difference. First operand 1710 states and 4904 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:48,108 INFO L93 Difference]: Finished difference Result 2072 states and 5703 transitions. [2021-10-13 17:55:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:48,109 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:48,112 INFO L225 Difference]: With dead ends: 2072 [2021-10-13 17:55:48,112 INFO L226 Difference]: Without dead ends: 2050 [2021-10-13 17:55:48,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 242.8ms TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2021-10-13 17:55:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1702. [2021-10-13 17:55:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1701 states have (on average 2.874779541446208) internal successors, (4890), 1701 states have internal predecessors, (4890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4890 transitions. [2021-10-13 17:55:48,137 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4890 transitions. Word has length 38 [2021-10-13 17:55:48,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:48,137 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4890 transitions. [2021-10-13 17:55:48,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4890 transitions. [2021-10-13 17:55:48,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:48,139 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:48,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:48,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-10-13 17:55:48,140 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:48,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:48,140 INFO L82 PathProgramCache]: Analyzing trace with hash -231417127, now seen corresponding path program 210 times [2021-10-13 17:55:48,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:48,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901579808] [2021-10-13 17:55:48,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:48,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:48,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:48,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901579808] [2021-10-13 17:55:48,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901579808] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:48,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:48,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:48,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878218515] [2021-10-13 17:55:48,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:48,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:48,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:48,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:48,267 INFO L87 Difference]: Start difference. First operand 1702 states and 4890 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:48,859 INFO L93 Difference]: Finished difference Result 1808 states and 5098 transitions. [2021-10-13 17:55:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:48,859 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:48,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:48,863 INFO L225 Difference]: With dead ends: 1808 [2021-10-13 17:55:48,863 INFO L226 Difference]: Without dead ends: 1784 [2021-10-13 17:55:48,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 242.7ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:48,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-10-13 17:55:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1700. [2021-10-13 17:55:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1699 states have (on average 2.8752207180694525) internal successors, (4885), 1699 states have internal predecessors, (4885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 4885 transitions. [2021-10-13 17:55:48,892 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4885 transitions. Word has length 38 [2021-10-13 17:55:48,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:48,893 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 4885 transitions. [2021-10-13 17:55:48,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:48,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4885 transitions. [2021-10-13 17:55:48,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:48,895 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:48,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:48,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-10-13 17:55:48,896 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:48,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:48,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1799661295, now seen corresponding path program 211 times [2021-10-13 17:55:48,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:48,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354727933] [2021-10-13 17:55:48,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:48,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:49,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:49,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354727933] [2021-10-13 17:55:49,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354727933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:49,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:49,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:49,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436380219] [2021-10-13 17:55:49,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:49,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:49,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:49,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:49,023 INFO L87 Difference]: Start difference. First operand 1700 states and 4885 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:49,539 INFO L93 Difference]: Finished difference Result 1814 states and 5101 transitions. [2021-10-13 17:55:49,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:49,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:49,542 INFO L225 Difference]: With dead ends: 1814 [2021-10-13 17:55:49,542 INFO L226 Difference]: Without dead ends: 1756 [2021-10-13 17:55:49,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 207.0ms TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:49,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2021-10-13 17:55:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1642. [2021-10-13 17:55:49,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 2.9092017062766606) internal successors, (4774), 1641 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 4774 transitions. [2021-10-13 17:55:49,567 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 4774 transitions. Word has length 38 [2021-10-13 17:55:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:49,567 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 4774 transitions. [2021-10-13 17:55:49,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 4774 transitions. [2021-10-13 17:55:49,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:49,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:49,570 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:49,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-10-13 17:55:49,570 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:49,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:49,571 INFO L82 PathProgramCache]: Analyzing trace with hash 640794507, now seen corresponding path program 212 times [2021-10-13 17:55:49,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:49,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260445617] [2021-10-13 17:55:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:49,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:49,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:49,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260445617] [2021-10-13 17:55:49,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260445617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:49,713 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:49,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 17:55:49,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714827401] [2021-10-13 17:55:49,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 17:55:49,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 17:55:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 17:55:49,715 INFO L87 Difference]: Start difference. First operand 1642 states and 4774 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:49,904 INFO L93 Difference]: Finished difference Result 1831 states and 5216 transitions. [2021-10-13 17:55:49,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 17:55:49,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:49,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:49,909 INFO L225 Difference]: With dead ends: 1831 [2021-10-13 17:55:49,909 INFO L226 Difference]: Without dead ends: 1440 [2021-10-13 17:55:49,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-13 17:55:49,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1440. [2021-10-13 17:55:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 2.963863794301598) internal successors, (4265), 1439 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4265 transitions. [2021-10-13 17:55:49,932 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4265 transitions. Word has length 38 [2021-10-13 17:55:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:49,933 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4265 transitions. [2021-10-13 17:55:49,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:49,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4265 transitions. [2021-10-13 17:55:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:49,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:49,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:49,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-10-13 17:55:49,935 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:49,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1871808187, now seen corresponding path program 213 times [2021-10-13 17:55:49,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:49,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809921158] [2021-10-13 17:55:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:49,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:50,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:50,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809921158] [2021-10-13 17:55:50,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809921158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:50,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:50,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:50,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177323596] [2021-10-13 17:55:50,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:50,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:50,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:50,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:50,064 INFO L87 Difference]: Start difference. First operand 1440 states and 4265 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:50,472 INFO L93 Difference]: Finished difference Result 1480 states and 4323 transitions. [2021-10-13 17:55:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:55:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:50,475 INFO L225 Difference]: With dead ends: 1480 [2021-10-13 17:55:50,475 INFO L226 Difference]: Without dead ends: 1460 [2021-10-13 17:55:50,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:55:50,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-13 17:55:50,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1440. [2021-10-13 17:55:50,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 2.9596942321056288) internal successors, (4259), 1439 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4259 transitions. [2021-10-13 17:55:50,499 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4259 transitions. Word has length 38 [2021-10-13 17:55:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:50,499 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4259 transitions. [2021-10-13 17:55:50,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4259 transitions. [2021-10-13 17:55:50,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:50,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:50,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:50,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-10-13 17:55:50,502 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:50,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:50,502 INFO L82 PathProgramCache]: Analyzing trace with hash 459053497, now seen corresponding path program 214 times [2021-10-13 17:55:50,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:50,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642414687] [2021-10-13 17:55:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:50,502 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:50,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:50,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642414687] [2021-10-13 17:55:50,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642414687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:50,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:50,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:50,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614543994] [2021-10-13 17:55:50,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:50,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:50,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:50,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:50,575 INFO L87 Difference]: Start difference. First operand 1440 states and 4259 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:50,942 INFO L93 Difference]: Finished difference Result 1594 states and 4566 transitions. [2021-10-13 17:55:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:50,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:50,946 INFO L225 Difference]: With dead ends: 1594 [2021-10-13 17:55:50,946 INFO L226 Difference]: Without dead ends: 1586 [2021-10-13 17:55:50,946 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 137.0ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:55:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-10-13 17:55:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1442. [2021-10-13 17:55:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.959056210964608) internal successors, (4264), 1441 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4264 transitions. [2021-10-13 17:55:50,967 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4264 transitions. Word has length 38 [2021-10-13 17:55:50,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:50,968 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4264 transitions. [2021-10-13 17:55:50,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4264 transitions. [2021-10-13 17:55:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:50,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:50,970 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:50,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-10-13 17:55:50,970 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:50,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1635656113, now seen corresponding path program 215 times [2021-10-13 17:55:50,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:50,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981734412] [2021-10-13 17:55:50,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:50,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:51,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:51,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981734412] [2021-10-13 17:55:51,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981734412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:51,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091108903] [2021-10-13 17:55:51,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:51,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:51,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:51,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:51,081 INFO L87 Difference]: Start difference. First operand 1442 states and 4264 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:51,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:51,538 INFO L93 Difference]: Finished difference Result 1592 states and 4559 transitions. [2021-10-13 17:55:51,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:51,538 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:51,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:51,542 INFO L225 Difference]: With dead ends: 1592 [2021-10-13 17:55:51,542 INFO L226 Difference]: Without dead ends: 1584 [2021-10-13 17:55:51,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 189.3ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:51,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-10-13 17:55:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1448. [2021-10-13 17:55:51,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1448 states, 1447 states have (on average 2.955770559778853) internal successors, (4277), 1447 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4277 transitions. [2021-10-13 17:55:51,564 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4277 transitions. Word has length 38 [2021-10-13 17:55:51,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:51,564 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 4277 transitions. [2021-10-13 17:55:51,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:51,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4277 transitions. [2021-10-13 17:55:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:51,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:51,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:51,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-10-13 17:55:51,567 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:51,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:51,567 INFO L82 PathProgramCache]: Analyzing trace with hash 296545461, now seen corresponding path program 216 times [2021-10-13 17:55:51,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:51,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932615] [2021-10-13 17:55:51,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:51,567 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:51,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:51,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:51,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932615] [2021-10-13 17:55:51,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:51,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:51,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:51,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672276778] [2021-10-13 17:55:51,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:51,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:51,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:51,668 INFO L87 Difference]: Start difference. First operand 1448 states and 4277 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:52,090 INFO L93 Difference]: Finished difference Result 1534 states and 4434 transitions. [2021-10-13 17:55:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:55:52,091 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:52,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:52,096 INFO L225 Difference]: With dead ends: 1534 [2021-10-13 17:55:52,096 INFO L226 Difference]: Without dead ends: 1516 [2021-10-13 17:55:52,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 126.8ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:55:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-13 17:55:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1442. [2021-10-13 17:55:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.9576682859125607) internal successors, (4262), 1441 states have internal predecessors, (4262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4262 transitions. [2021-10-13 17:55:52,137 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4262 transitions. Word has length 38 [2021-10-13 17:55:52,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:52,137 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4262 transitions. [2021-10-13 17:55:52,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4262 transitions. [2021-10-13 17:55:52,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:52,141 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:52,141 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:52,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-10-13 17:55:52,141 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:52,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:52,142 INFO L82 PathProgramCache]: Analyzing trace with hash -963668901, now seen corresponding path program 217 times [2021-10-13 17:55:52,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:52,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692945820] [2021-10-13 17:55:52,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:52,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:52,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:52,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692945820] [2021-10-13 17:55:52,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692945820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:52,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:52,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:52,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083699066] [2021-10-13 17:55:52,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:52,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:52,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:52,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:52,274 INFO L87 Difference]: Start difference. First operand 1442 states and 4262 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:52,754 INFO L93 Difference]: Finished difference Result 1508 states and 4381 transitions. [2021-10-13 17:55:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:55:52,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:52,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:52,758 INFO L225 Difference]: With dead ends: 1508 [2021-10-13 17:55:52,759 INFO L226 Difference]: Without dead ends: 1486 [2021-10-13 17:55:52,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 177.1ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:55:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-13 17:55:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1434. [2021-10-13 17:55:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1433 states have (on average 2.961618981158409) internal successors, (4244), 1433 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 4244 transitions. [2021-10-13 17:55:52,789 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 4244 transitions. Word has length 38 [2021-10-13 17:55:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:52,790 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 4244 transitions. [2021-10-13 17:55:52,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 4244 transitions. [2021-10-13 17:55:52,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:52,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:52,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:52,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-10-13 17:55:52,792 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:52,792 INFO L82 PathProgramCache]: Analyzing trace with hash -50126625, now seen corresponding path program 218 times [2021-10-13 17:55:52,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:52,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436609510] [2021-10-13 17:55:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:52,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:52,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:52,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:52,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436609510] [2021-10-13 17:55:52,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436609510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:52,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:52,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:52,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923514124] [2021-10-13 17:55:52,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:52,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:52,895 INFO L87 Difference]: Start difference. First operand 1434 states and 4244 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:53,547 INFO L93 Difference]: Finished difference Result 1508 states and 4382 transitions. [2021-10-13 17:55:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:53,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:53,553 INFO L225 Difference]: With dead ends: 1508 [2021-10-13 17:55:53,553 INFO L226 Difference]: Without dead ends: 1480 [2021-10-13 17:55:53,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 266.8ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:55:53,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-10-13 17:55:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1428. [2021-10-13 17:55:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 2.9635599159074983) internal successors, (4229), 1427 states have internal predecessors, (4229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4229 transitions. [2021-10-13 17:55:53,586 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4229 transitions. Word has length 38 [2021-10-13 17:55:53,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:53,586 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 4229 transitions. [2021-10-13 17:55:53,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:53,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4229 transitions. [2021-10-13 17:55:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:53,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:53,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:53,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-10-13 17:55:53,590 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:53,591 INFO L82 PathProgramCache]: Analyzing trace with hash 141082295, now seen corresponding path program 219 times [2021-10-13 17:55:53,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:53,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125588086] [2021-10-13 17:55:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:53,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:53,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:53,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125588086] [2021-10-13 17:55:53,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125588086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:53,692 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:53,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:53,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654165767] [2021-10-13 17:55:53,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:53,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:53,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:53,693 INFO L87 Difference]: Start difference. First operand 1428 states and 4229 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:54,168 INFO L93 Difference]: Finished difference Result 1536 states and 4443 transitions. [2021-10-13 17:55:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:55:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:54,171 INFO L225 Difference]: With dead ends: 1536 [2021-10-13 17:55:54,171 INFO L226 Difference]: Without dead ends: 1518 [2021-10-13 17:55:54,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:55:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-13 17:55:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1430. [2021-10-13 17:55:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.9629111266620014) internal successors, (4234), 1429 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4234 transitions. [2021-10-13 17:55:54,192 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4234 transitions. Word has length 38 [2021-10-13 17:55:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:54,192 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 4234 transitions. [2021-10-13 17:55:54,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4234 transitions. [2021-10-13 17:55:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:54,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:54,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:54,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-10-13 17:55:54,195 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:54,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:54,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1557200689, now seen corresponding path program 220 times [2021-10-13 17:55:54,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:54,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360068008] [2021-10-13 17:55:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:54,196 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:54,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:54,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:54,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360068008] [2021-10-13 17:55:54,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360068008] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:54,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:54,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:54,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897012124] [2021-10-13 17:55:54,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:54,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:54,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:54,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:54,307 INFO L87 Difference]: Start difference. First operand 1430 states and 4234 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:54,849 INFO L93 Difference]: Finished difference Result 1532 states and 4431 transitions. [2021-10-13 17:55:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:55:54,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:54,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:54,852 INFO L225 Difference]: With dead ends: 1532 [2021-10-13 17:55:54,852 INFO L226 Difference]: Without dead ends: 1516 [2021-10-13 17:55:54,852 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 215.6ms TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:54,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-13 17:55:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1436. [2021-10-13 17:55:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.959581881533101) internal successors, (4247), 1435 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4247 transitions. [2021-10-13 17:55:54,873 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4247 transitions. Word has length 38 [2021-10-13 17:55:54,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:54,873 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4247 transitions. [2021-10-13 17:55:54,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4247 transitions. [2021-10-13 17:55:54,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:54,875 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:54,875 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:54,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-10-13 17:55:54,875 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:54,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2115866663, now seen corresponding path program 221 times [2021-10-13 17:55:54,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:54,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960168236] [2021-10-13 17:55:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:54,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:54,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:54,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960168236] [2021-10-13 17:55:54,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960168236] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:54,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:54,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:54,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117876286] [2021-10-13 17:55:54,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:54,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:54,991 INFO L87 Difference]: Start difference. First operand 1436 states and 4247 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:55,549 INFO L93 Difference]: Finished difference Result 1544 states and 4456 transitions. [2021-10-13 17:55:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:55:55,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:55,553 INFO L225 Difference]: With dead ends: 1544 [2021-10-13 17:55:55,553 INFO L226 Difference]: Without dead ends: 1518 [2021-10-13 17:55:55,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 237.4ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:55:55,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-13 17:55:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1430. [2021-10-13 17:55:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 2.9615115465360393) internal successors, (4232), 1429 states have internal predecessors, (4232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4232 transitions. [2021-10-13 17:55:55,574 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4232 transitions. Word has length 38 [2021-10-13 17:55:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:55,574 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 4232 transitions. [2021-10-13 17:55:55,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4232 transitions. [2021-10-13 17:55:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:55,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:55,576 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:55,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-10-13 17:55:55,577 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:55,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1700675621, now seen corresponding path program 222 times [2021-10-13 17:55:55,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:55,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372559256] [2021-10-13 17:55:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:55,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:55,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:55,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:55,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372559256] [2021-10-13 17:55:55,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372559256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:55,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:55,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:55:55,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749526835] [2021-10-13 17:55:55,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:55:55,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:55:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:55:55,679 INFO L87 Difference]: Start difference. First operand 1430 states and 4232 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:56,425 INFO L93 Difference]: Finished difference Result 1530 states and 4429 transitions. [2021-10-13 17:55:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:55:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:56,430 INFO L225 Difference]: With dead ends: 1530 [2021-10-13 17:55:56,431 INFO L226 Difference]: Without dead ends: 1500 [2021-10-13 17:55:56,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 318.1ms TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:55:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-10-13 17:55:56,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1422. [2021-10-13 17:55:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1421 states have (on average 2.9655172413793105) internal successors, (4214), 1421 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:56,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4214 transitions. [2021-10-13 17:55:56,467 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4214 transitions. Word has length 38 [2021-10-13 17:55:56,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:56,467 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 4214 transitions. [2021-10-13 17:55:56,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:56,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4214 transitions. [2021-10-13 17:55:56,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:56,471 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:56,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:56,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-10-13 17:55:56,472 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:56,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:56,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1110311841, now seen corresponding path program 223 times [2021-10-13 17:55:56,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:56,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815976256] [2021-10-13 17:55:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:56,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:56,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:56,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815976256] [2021-10-13 17:55:56,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815976256] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:56,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:56,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:56,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051669815] [2021-10-13 17:55:56,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:56,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:56,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:56,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:56,700 INFO L87 Difference]: Start difference. First operand 1422 states and 4214 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:57,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:57,432 INFO L93 Difference]: Finished difference Result 1596 states and 4589 transitions. [2021-10-13 17:55:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:55:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:57,438 INFO L225 Difference]: With dead ends: 1596 [2021-10-13 17:55:57,438 INFO L226 Difference]: Without dead ends: 1588 [2021-10-13 17:55:57,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 250.2ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-10-13 17:55:57,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1438. [2021-10-13 17:55:57,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 2.9631176061238693) internal successors, (4258), 1437 states have internal predecessors, (4258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4258 transitions. [2021-10-13 17:55:57,474 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4258 transitions. Word has length 38 [2021-10-13 17:55:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:57,475 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 4258 transitions. [2021-10-13 17:55:57,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4258 transitions. [2021-10-13 17:55:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:57,479 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:57,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:57,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-10-13 17:55:57,479 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:57,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:57,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1380555707, now seen corresponding path program 224 times [2021-10-13 17:55:57,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:57,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422927292] [2021-10-13 17:55:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:57,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:57,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:57,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422927292] [2021-10-13 17:55:57,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422927292] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:57,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:57,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:55:57,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398658308] [2021-10-13 17:55:57,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:55:57,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:55:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:55:57,702 INFO L87 Difference]: Start difference. First operand 1438 states and 4258 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:58,463 INFO L93 Difference]: Finished difference Result 1594 states and 4586 transitions. [2021-10-13 17:55:58,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:58,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:58,467 INFO L225 Difference]: With dead ends: 1594 [2021-10-13 17:55:58,467 INFO L226 Difference]: Without dead ends: 1576 [2021-10-13 17:55:58,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 322.3ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:55:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-13 17:55:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1442. [2021-10-13 17:55:58,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1441 states have (on average 2.960444136016655) internal successors, (4266), 1441 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4266 transitions. [2021-10-13 17:55:58,494 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4266 transitions. Word has length 38 [2021-10-13 17:55:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:58,494 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4266 transitions. [2021-10-13 17:55:58,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4266 transitions. [2021-10-13 17:55:58,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:58,497 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:58,497 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-10-13 17:55:58,497 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash 683113723, now seen corresponding path program 225 times [2021-10-13 17:55:58,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:58,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408278941] [2021-10-13 17:55:58,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:58,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:58,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:58,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408278941] [2021-10-13 17:55:58,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408278941] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:58,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:58,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:58,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697526480] [2021-10-13 17:55:58,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:58,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:58,596 INFO L87 Difference]: Start difference. First operand 1442 states and 4266 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:59,020 INFO L93 Difference]: Finished difference Result 1580 states and 4541 transitions. [2021-10-13 17:55:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:55:59,021 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:59,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:59,024 INFO L225 Difference]: With dead ends: 1580 [2021-10-13 17:55:59,024 INFO L226 Difference]: Without dead ends: 1562 [2021-10-13 17:55:59,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 146.4ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:55:59,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-13 17:55:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1436. [2021-10-13 17:55:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.959581881533101) internal successors, (4247), 1435 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4247 transitions. [2021-10-13 17:55:59,048 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4247 transitions. Word has length 38 [2021-10-13 17:55:59,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:59,049 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4247 transitions. [2021-10-13 17:55:59,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4247 transitions. [2021-10-13 17:55:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:59,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:59,051 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:59,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-10-13 17:55:59,051 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 590596383, now seen corresponding path program 226 times [2021-10-13 17:55:59,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:59,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528092044] [2021-10-13 17:55:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:59,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:59,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:59,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528092044] [2021-10-13 17:55:59,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528092044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:59,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:59,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:55:59,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120893679] [2021-10-13 17:55:59,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:55:59,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:55:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:55:59,225 INFO L87 Difference]: Start difference. First operand 1436 states and 4247 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:55:59,739 INFO L93 Difference]: Finished difference Result 1606 states and 4599 transitions. [2021-10-13 17:55:59,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:55:59,740 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:55:59,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:55:59,743 INFO L225 Difference]: With dead ends: 1606 [2021-10-13 17:55:59,743 INFO L226 Difference]: Without dead ends: 1574 [2021-10-13 17:55:59,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 195.7ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:55:59,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-10-13 17:55:59,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1424. [2021-10-13 17:55:59,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 2.964862965565706) internal successors, (4219), 1423 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4219 transitions. [2021-10-13 17:55:59,765 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4219 transitions. Word has length 38 [2021-10-13 17:55:59,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:55:59,765 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4219 transitions. [2021-10-13 17:55:59,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:55:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4219 transitions. [2021-10-13 17:55:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:55:59,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:55:59,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:55:59,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-10-13 17:55:59,768 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:55:59,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:55:59,768 INFO L82 PathProgramCache]: Analyzing trace with hash 831642173, now seen corresponding path program 227 times [2021-10-13 17:55:59,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:55:59,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928746388] [2021-10-13 17:55:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:55:59,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:55:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:55:59,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:55:59,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:55:59,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928746388] [2021-10-13 17:55:59,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928746388] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:55:59,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:55:59,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:55:59,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984792412] [2021-10-13 17:55:59,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:55:59,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:55:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:55:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:55:59,844 INFO L87 Difference]: Start difference. First operand 1424 states and 4219 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:00,205 INFO L93 Difference]: Finished difference Result 1618 states and 4636 transitions. [2021-10-13 17:56:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:00,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:00,208 INFO L225 Difference]: With dead ends: 1618 [2021-10-13 17:56:00,208 INFO L226 Difference]: Without dead ends: 1610 [2021-10-13 17:56:00,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:00,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-10-13 17:56:00,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1426. [2021-10-13 17:56:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.9642105263157896) internal successors, (4224), 1425 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4224 transitions. [2021-10-13 17:56:00,229 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4224 transitions. Word has length 38 [2021-10-13 17:56:00,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:00,229 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4224 transitions. [2021-10-13 17:56:00,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4224 transitions. [2021-10-13 17:56:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:00,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:00,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:00,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-10-13 17:56:00,232 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1263067437, now seen corresponding path program 228 times [2021-10-13 17:56:00,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:00,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002294951] [2021-10-13 17:56:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:00,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:00,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:00,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002294951] [2021-10-13 17:56:00,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002294951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:00,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:00,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:00,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840977599] [2021-10-13 17:56:00,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:00,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:00,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:00,324 INFO L87 Difference]: Start difference. First operand 1426 states and 4224 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:00,737 INFO L93 Difference]: Finished difference Result 1616 states and 4629 transitions. [2021-10-13 17:56:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:00,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:00,740 INFO L225 Difference]: With dead ends: 1616 [2021-10-13 17:56:00,740 INFO L226 Difference]: Without dead ends: 1608 [2021-10-13 17:56:00,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 178.2ms TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-10-13 17:56:00,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1432. [2021-10-13 17:56:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 2.9608665269042627) internal successors, (4237), 1431 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 4237 transitions. [2021-10-13 17:56:00,761 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 4237 transitions. Word has length 38 [2021-10-13 17:56:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:00,761 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 4237 transitions. [2021-10-13 17:56:00,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 4237 transitions. [2021-10-13 17:56:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:00,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:00,763 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:00,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-10-13 17:56:00,764 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:00,764 INFO L82 PathProgramCache]: Analyzing trace with hash 669134137, now seen corresponding path program 229 times [2021-10-13 17:56:00,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:00,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234028223] [2021-10-13 17:56:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:00,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:00,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:00,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:00,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234028223] [2021-10-13 17:56:00,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234028223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:00,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:00,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:00,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5608445] [2021-10-13 17:56:00,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:00,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:00,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:00,849 INFO L87 Difference]: Start difference. First operand 1432 states and 4237 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:01,195 INFO L93 Difference]: Finished difference Result 1566 states and 4516 transitions. [2021-10-13 17:56:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:01,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:01,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:01,199 INFO L225 Difference]: With dead ends: 1566 [2021-10-13 17:56:01,199 INFO L226 Difference]: Without dead ends: 1548 [2021-10-13 17:56:01,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 140.0ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-13 17:56:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1426. [2021-10-13 17:56:01,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.9628070175438594) internal successors, (4222), 1425 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4222 transitions. [2021-10-13 17:56:01,234 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4222 transitions. Word has length 38 [2021-10-13 17:56:01,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:01,235 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4222 transitions. [2021-10-13 17:56:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4222 transitions. [2021-10-13 17:56:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:01,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:01,239 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:01,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-10-13 17:56:01,240 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:01,240 INFO L82 PathProgramCache]: Analyzing trace with hash -591080225, now seen corresponding path program 230 times [2021-10-13 17:56:01,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:01,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727951140] [2021-10-13 17:56:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:01,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:01,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:01,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727951140] [2021-10-13 17:56:01,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727951140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:01,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:01,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:01,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909463527] [2021-10-13 17:56:01,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:01,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:01,362 INFO L87 Difference]: Start difference. First operand 1426 states and 4222 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:01,804 INFO L93 Difference]: Finished difference Result 1564 states and 4507 transitions. [2021-10-13 17:56:01,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:01,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:01,807 INFO L225 Difference]: With dead ends: 1564 [2021-10-13 17:56:01,807 INFO L226 Difference]: Without dead ends: 1548 [2021-10-13 17:56:01,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-13 17:56:01,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1424. [2021-10-13 17:56:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 2.9634574841883343) internal successors, (4217), 1423 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4217 transitions. [2021-10-13 17:56:01,828 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4217 transitions. Word has length 38 [2021-10-13 17:56:01,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:01,828 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4217 transitions. [2021-10-13 17:56:01,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4217 transitions. [2021-10-13 17:56:01,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:01,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:01,830 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:01,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-10-13 17:56:01,830 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:01,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1859361513, now seen corresponding path program 231 times [2021-10-13 17:56:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:01,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494013707] [2021-10-13 17:56:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:01,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:01,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:01,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494013707] [2021-10-13 17:56:01,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494013707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:01,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:01,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:01,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100402723] [2021-10-13 17:56:01,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:01,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:01,941 INFO L87 Difference]: Start difference. First operand 1424 states and 4217 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:02,397 INFO L93 Difference]: Finished difference Result 1580 states and 4553 transitions. [2021-10-13 17:56:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:02,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:02,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:02,400 INFO L225 Difference]: With dead ends: 1580 [2021-10-13 17:56:02,400 INFO L226 Difference]: Without dead ends: 1562 [2021-10-13 17:56:02,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 186.2ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:02,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-13 17:56:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1426. [2021-10-13 17:56:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.9628070175438594) internal successors, (4222), 1425 states have internal predecessors, (4222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:02,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4222 transitions. [2021-10-13 17:56:02,421 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4222 transitions. Word has length 38 [2021-10-13 17:56:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:02,422 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4222 transitions. [2021-10-13 17:56:02,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4222 transitions. [2021-10-13 17:56:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:02,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:02,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:02,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-10-13 17:56:02,424 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:02,425 INFO L82 PathProgramCache]: Analyzing trace with hash 737322799, now seen corresponding path program 232 times [2021-10-13 17:56:02,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:02,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704119086] [2021-10-13 17:56:02,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:02,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:02,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:02,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704119086] [2021-10-13 17:56:02,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704119086] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:02,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:02,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:02,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299649715] [2021-10-13 17:56:02,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:02,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:02,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:02,547 INFO L87 Difference]: Start difference. First operand 1426 states and 4222 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:03,011 INFO L93 Difference]: Finished difference Result 1576 states and 4541 transitions. [2021-10-13 17:56:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:56:03,011 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:03,014 INFO L225 Difference]: With dead ends: 1576 [2021-10-13 17:56:03,014 INFO L226 Difference]: Without dead ends: 1560 [2021-10-13 17:56:03,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 216.4ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:56:03,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-10-13 17:56:03,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1432. [2021-10-13 17:56:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 2.959468902865129) internal successors, (4235), 1431 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 4235 transitions. [2021-10-13 17:56:03,034 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 4235 transitions. Word has length 38 [2021-10-13 17:56:03,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:03,034 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 4235 transitions. [2021-10-13 17:56:03,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 4235 transitions. [2021-10-13 17:56:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:03,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:03,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:03,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-10-13 17:56:03,037 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:03,037 INFO L82 PathProgramCache]: Analyzing trace with hash 178656825, now seen corresponding path program 233 times [2021-10-13 17:56:03,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:03,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516281225] [2021-10-13 17:56:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:03,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:03,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:03,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516281225] [2021-10-13 17:56:03,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516281225] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:03,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:03,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:03,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234162265] [2021-10-13 17:56:03,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:03,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:03,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:03,159 INFO L87 Difference]: Start difference. First operand 1432 states and 4235 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:03,672 INFO L93 Difference]: Finished difference Result 1588 states and 4566 transitions. [2021-10-13 17:56:03,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:56:03,672 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:03,675 INFO L225 Difference]: With dead ends: 1588 [2021-10-13 17:56:03,675 INFO L226 Difference]: Without dead ends: 1562 [2021-10-13 17:56:03,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:56:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-13 17:56:03,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1426. [2021-10-13 17:56:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.9614035087719297) internal successors, (4220), 1425 states have internal predecessors, (4220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4220 transitions. [2021-10-13 17:56:03,695 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4220 transitions. Word has length 38 [2021-10-13 17:56:03,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:03,695 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4220 transitions. [2021-10-13 17:56:03,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:03,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4220 transitions. [2021-10-13 17:56:03,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:03,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:03,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:03,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-10-13 17:56:03,698 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:03,698 INFO L82 PathProgramCache]: Analyzing trace with hash 593847867, now seen corresponding path program 234 times [2021-10-13 17:56:03,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:03,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167076251] [2021-10-13 17:56:03,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:03,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:03,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:03,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167076251] [2021-10-13 17:56:03,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167076251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:03,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:03,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:03,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798315955] [2021-10-13 17:56:03,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:03,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:03,823 INFO L87 Difference]: Start difference. First operand 1426 states and 4220 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:04,392 INFO L93 Difference]: Finished difference Result 1574 states and 4539 transitions. [2021-10-13 17:56:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:56:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:04,396 INFO L225 Difference]: With dead ends: 1574 [2021-10-13 17:56:04,396 INFO L226 Difference]: Without dead ends: 1542 [2021-10-13 17:56:04,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 258.3ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:56:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-10-13 17:56:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1416. [2021-10-13 17:56:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.9674911660777386) internal successors, (4199), 1415 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4199 transitions. [2021-10-13 17:56:04,419 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4199 transitions. Word has length 38 [2021-10-13 17:56:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:04,419 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4199 transitions. [2021-10-13 17:56:04,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4199 transitions. [2021-10-13 17:56:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:04,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:04,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:04,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-10-13 17:56:04,421 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:04,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1323451083, now seen corresponding path program 235 times [2021-10-13 17:56:04,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:04,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892757275] [2021-10-13 17:56:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:04,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:04,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:04,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:04,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892757275] [2021-10-13 17:56:04,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892757275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:04,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:04,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:04,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449163012] [2021-10-13 17:56:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:04,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:04,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:04,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:04,515 INFO L87 Difference]: Start difference. First operand 1416 states and 4199 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:04,814 INFO L93 Difference]: Finished difference Result 1440 states and 4233 transitions. [2021-10-13 17:56:04,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:04,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:04,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:04,817 INFO L225 Difference]: With dead ends: 1440 [2021-10-13 17:56:04,817 INFO L226 Difference]: Without dead ends: 1420 [2021-10-13 17:56:04,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-13 17:56:04,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1416. [2021-10-13 17:56:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 2.963250883392226) internal successors, (4193), 1415 states have internal predecessors, (4193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4193 transitions. [2021-10-13 17:56:04,838 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4193 transitions. Word has length 38 [2021-10-13 17:56:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:04,838 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4193 transitions. [2021-10-13 17:56:04,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4193 transitions. [2021-10-13 17:56:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:04,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:04,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:04,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-10-13 17:56:04,840 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash 657467375, now seen corresponding path program 236 times [2021-10-13 17:56:04,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:04,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560210001] [2021-10-13 17:56:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:04,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:04,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:04,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560210001] [2021-10-13 17:56:04,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560210001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:04,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:04,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:56:04,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66482909] [2021-10-13 17:56:04,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:56:04,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:04,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:56:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:56:04,937 INFO L87 Difference]: Start difference. First operand 1416 states and 4193 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:05,330 INFO L93 Difference]: Finished difference Result 1524 states and 4411 transitions. [2021-10-13 17:56:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:05,333 INFO L225 Difference]: With dead ends: 1524 [2021-10-13 17:56:05,334 INFO L226 Difference]: Without dead ends: 1516 [2021-10-13 17:56:05,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-13 17:56:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1418. [2021-10-13 17:56:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 2.9625970359915312) internal successors, (4198), 1417 states have internal predecessors, (4198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4198 transitions. [2021-10-13 17:56:05,354 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4198 transitions. Word has length 38 [2021-10-13 17:56:05,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:05,354 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 4198 transitions. [2021-10-13 17:56:05,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4198 transitions. [2021-10-13 17:56:05,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:05,357 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:05,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:05,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-10-13 17:56:05,357 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:05,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:05,357 INFO L82 PathProgramCache]: Analyzing trace with hash -450024191, now seen corresponding path program 237 times [2021-10-13 17:56:05,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:05,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200997594] [2021-10-13 17:56:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:05,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:05,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:05,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200997594] [2021-10-13 17:56:05,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200997594] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:05,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:05,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:05,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556090288] [2021-10-13 17:56:05,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:05,471 INFO L87 Difference]: Start difference. First operand 1418 states and 4198 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:05,924 INFO L93 Difference]: Finished difference Result 1522 states and 4404 transitions. [2021-10-13 17:56:05,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:56:05,925 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:05,927 INFO L225 Difference]: With dead ends: 1522 [2021-10-13 17:56:05,927 INFO L226 Difference]: Without dead ends: 1514 [2021-10-13 17:56:05,928 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:05,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-10-13 17:56:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1424. [2021-10-13 17:56:05,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 2.9592410400562192) internal successors, (4211), 1423 states have internal predecessors, (4211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4211 transitions. [2021-10-13 17:56:05,952 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4211 transitions. Word has length 38 [2021-10-13 17:56:05,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:05,952 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4211 transitions. [2021-10-13 17:56:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4211 transitions. [2021-10-13 17:56:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:05,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:05,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:05,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-10-13 17:56:05,954 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:05,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:05,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1444337811, now seen corresponding path program 238 times [2021-10-13 17:56:05,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:05,955 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575906725] [2021-10-13 17:56:05,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:05,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:06,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:06,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575906725] [2021-10-13 17:56:06,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575906725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:06,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:06,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:06,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893195400] [2021-10-13 17:56:06,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:06,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:06,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:06,148 INFO L87 Difference]: Start difference. First operand 1424 states and 4211 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:06,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:06,489 INFO L93 Difference]: Finished difference Result 1464 states and 4279 transitions. [2021-10-13 17:56:06,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:06,489 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:06,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:06,492 INFO L225 Difference]: With dead ends: 1464 [2021-10-13 17:56:06,492 INFO L226 Difference]: Without dead ends: 1446 [2021-10-13 17:56:06,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-13 17:56:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1418. [2021-10-13 17:56:06,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1417 states have (on average 2.961185603387438) internal successors, (4196), 1417 states have internal predecessors, (4196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:06,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4196 transitions. [2021-10-13 17:56:06,518 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4196 transitions. Word has length 38 [2021-10-13 17:56:06,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:06,519 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 4196 transitions. [2021-10-13 17:56:06,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:06,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4196 transitions. [2021-10-13 17:56:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:06,522 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:06,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:06,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-10-13 17:56:06,523 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:06,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:06,524 INFO L82 PathProgramCache]: Analyzing trace with hash 136039125, now seen corresponding path program 239 times [2021-10-13 17:56:06,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:06,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341409946] [2021-10-13 17:56:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:06,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:06,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:06,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341409946] [2021-10-13 17:56:06,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341409946] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:06,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:06,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:06,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720444706] [2021-10-13 17:56:06,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:06,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:06,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:06,659 INFO L87 Difference]: Start difference. First operand 1418 states and 4196 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:07,049 INFO L93 Difference]: Finished difference Result 1460 states and 4267 transitions. [2021-10-13 17:56:07,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:07,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:07,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:07,053 INFO L225 Difference]: With dead ends: 1460 [2021-10-13 17:56:07,054 INFO L226 Difference]: Without dead ends: 1438 [2021-10-13 17:56:07,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 187.9ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-10-13 17:56:07,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1410. [2021-10-13 17:56:07,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 2.965223562810504) internal successors, (4178), 1409 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 4178 transitions. [2021-10-13 17:56:07,078 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 4178 transitions. Word has length 38 [2021-10-13 17:56:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:07,078 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 4178 transitions. [2021-10-13 17:56:07,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 4178 transitions. [2021-10-13 17:56:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:07,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:07,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:07,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-10-13 17:56:07,082 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:07,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:07,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1412411295, now seen corresponding path program 240 times [2021-10-13 17:56:07,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:07,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053165097] [2021-10-13 17:56:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:07,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:07,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:07,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053165097] [2021-10-13 17:56:07,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053165097] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:07,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:07,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:07,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734398567] [2021-10-13 17:56:07,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:07,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:07,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:07,239 INFO L87 Difference]: Start difference. First operand 1410 states and 4178 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:07,782 INFO L93 Difference]: Finished difference Result 1484 states and 4316 transitions. [2021-10-13 17:56:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 17:56:07,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:07,785 INFO L225 Difference]: With dead ends: 1484 [2021-10-13 17:56:07,785 INFO L226 Difference]: Without dead ends: 1456 [2021-10-13 17:56:07,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 242.8ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:56:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-10-13 17:56:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1404. [2021-10-13 17:56:07,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.9672131147540983) internal successors, (4163), 1403 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4163 transitions. [2021-10-13 17:56:07,806 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4163 transitions. Word has length 38 [2021-10-13 17:56:07,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:07,807 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4163 transitions. [2021-10-13 17:56:07,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4163 transitions. [2021-10-13 17:56:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:07,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:07,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:07,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-10-13 17:56:07,809 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1745962853, now seen corresponding path program 241 times [2021-10-13 17:56:07,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:07,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226860392] [2021-10-13 17:56:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:07,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:07,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:07,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226860392] [2021-10-13 17:56:07,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226860392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:07,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:07,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:07,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028716778] [2021-10-13 17:56:07,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:07,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:07,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:07,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:07,942 INFO L87 Difference]: Start difference. First operand 1404 states and 4163 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:08,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:08,462 INFO L93 Difference]: Finished difference Result 1486 states and 4323 transitions. [2021-10-13 17:56:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-13 17:56:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:08,465 INFO L225 Difference]: With dead ends: 1486 [2021-10-13 17:56:08,465 INFO L226 Difference]: Without dead ends: 1466 [2021-10-13 17:56:08,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 213.5ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:56:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-13 17:56:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1412. [2021-10-13 17:56:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 2.9603118355776044) internal successors, (4177), 1411 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4177 transitions. [2021-10-13 17:56:08,486 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4177 transitions. Word has length 38 [2021-10-13 17:56:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:08,486 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4177 transitions. [2021-10-13 17:56:08,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:08,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4177 transitions. [2021-10-13 17:56:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:08,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:08,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:08,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-10-13 17:56:08,489 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:08,489 INFO L82 PathProgramCache]: Analyzing trace with hash 41985487, now seen corresponding path program 242 times [2021-10-13 17:56:08,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:08,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248023707] [2021-10-13 17:56:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:08,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:08,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:08,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248023707] [2021-10-13 17:56:08,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248023707] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:08,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:08,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:08,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760945847] [2021-10-13 17:56:08,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:08,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:08,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:08,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:08,620 INFO L87 Difference]: Start difference. First operand 1412 states and 4177 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:09,082 INFO L93 Difference]: Finished difference Result 1468 states and 4285 transitions. [2021-10-13 17:56:09,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:56:09,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:09,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:09,084 INFO L225 Difference]: With dead ends: 1468 [2021-10-13 17:56:09,085 INFO L226 Difference]: Without dead ends: 1450 [2021-10-13 17:56:09,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 205.6ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-10-13 17:56:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1412. [2021-10-13 17:56:09,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 2.9603118355776044) internal successors, (4177), 1411 states have internal predecessors, (4177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4177 transitions. [2021-10-13 17:56:09,105 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4177 transitions. Word has length 38 [2021-10-13 17:56:09,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:09,105 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4177 transitions. [2021-10-13 17:56:09,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4177 transitions. [2021-10-13 17:56:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:09,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:09,107 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:09,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-10-13 17:56:09,107 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:09,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:09,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1525850815, now seen corresponding path program 243 times [2021-10-13 17:56:09,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:09,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047951078] [2021-10-13 17:56:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:09,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:09,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:09,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047951078] [2021-10-13 17:56:09,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047951078] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:09,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:09,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:09,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582572184] [2021-10-13 17:56:09,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:09,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:09,218 INFO L87 Difference]: Start difference. First operand 1412 states and 4177 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:09,654 INFO L93 Difference]: Finished difference Result 1462 states and 4270 transitions. [2021-10-13 17:56:09,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 17:56:09,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:09,657 INFO L225 Difference]: With dead ends: 1462 [2021-10-13 17:56:09,657 INFO L226 Difference]: Without dead ends: 1440 [2021-10-13 17:56:09,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 187.0ms TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:56:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-13 17:56:09,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1406. [2021-10-13 17:56:09,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.965124555160142) internal successors, (4166), 1405 states have internal predecessors, (4166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4166 transitions. [2021-10-13 17:56:09,677 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4166 transitions. Word has length 38 [2021-10-13 17:56:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:09,677 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 4166 transitions. [2021-10-13 17:56:09,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4166 transitions. [2021-10-13 17:56:09,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:09,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:09,680 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:09,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-10-13 17:56:09,680 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:09,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:09,680 INFO L82 PathProgramCache]: Analyzing trace with hash -364980843, now seen corresponding path program 244 times [2021-10-13 17:56:09,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:09,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279026277] [2021-10-13 17:56:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:09,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:09,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:09,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279026277] [2021-10-13 17:56:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279026277] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:09,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:09,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:09,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077523360] [2021-10-13 17:56:09,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:09,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:09,801 INFO L87 Difference]: Start difference. First operand 1406 states and 4166 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:10,327 INFO L93 Difference]: Finished difference Result 1468 states and 4286 transitions. [2021-10-13 17:56:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 17:56:10,328 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:10,330 INFO L225 Difference]: With dead ends: 1468 [2021-10-13 17:56:10,330 INFO L226 Difference]: Without dead ends: 1438 [2021-10-13 17:56:10,330 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 247.5ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:56:10,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-10-13 17:56:10,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1398. [2021-10-13 17:56:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.9692197566213316) internal successors, (4148), 1397 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4148 transitions. [2021-10-13 17:56:10,349 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4148 transitions. Word has length 38 [2021-10-13 17:56:10,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:10,349 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4148 transitions. [2021-10-13 17:56:10,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4148 transitions. [2021-10-13 17:56:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:10,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:10,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:10,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-10-13 17:56:10,351 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:10,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:10,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1300139515, now seen corresponding path program 245 times [2021-10-13 17:56:10,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:10,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629992629] [2021-10-13 17:56:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:10,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:10,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:10,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629992629] [2021-10-13 17:56:10,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629992629] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:10,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:10,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:56:10,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877355627] [2021-10-13 17:56:10,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:56:10,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:56:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:56:10,445 INFO L87 Difference]: Start difference. First operand 1398 states and 4148 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:10,817 INFO L93 Difference]: Finished difference Result 1508 states and 4377 transitions. [2021-10-13 17:56:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:10,822 INFO L225 Difference]: With dead ends: 1508 [2021-10-13 17:56:10,822 INFO L226 Difference]: Without dead ends: 1500 [2021-10-13 17:56:10,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:10,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-10-13 17:56:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1412. [2021-10-13 17:56:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 2.968816442239546) internal successors, (4189), 1411 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4189 transitions. [2021-10-13 17:56:10,859 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4189 transitions. Word has length 38 [2021-10-13 17:56:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:10,859 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4189 transitions. [2021-10-13 17:56:10,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4189 transitions. [2021-10-13 17:56:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:10,864 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:10,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:10,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-10-13 17:56:10,865 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 305825895, now seen corresponding path program 246 times [2021-10-13 17:56:10,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:10,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596666466] [2021-10-13 17:56:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:10,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:11,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:11,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596666466] [2021-10-13 17:56:11,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596666466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:11,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:11,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:56:11,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216410094] [2021-10-13 17:56:11,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:56:11,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:56:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:56:11,026 INFO L87 Difference]: Start difference. First operand 1412 states and 4189 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:11,394 INFO L93 Difference]: Finished difference Result 1484 states and 4323 transitions. [2021-10-13 17:56:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:11,400 INFO L225 Difference]: With dead ends: 1484 [2021-10-13 17:56:11,401 INFO L226 Difference]: Without dead ends: 1466 [2021-10-13 17:56:11,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 143.0ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:56:11,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-13 17:56:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1406. [2021-10-13 17:56:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1405 states have (on average 2.9679715302491103) internal successors, (4170), 1405 states have internal predecessors, (4170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4170 transitions. [2021-10-13 17:56:11,431 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4170 transitions. Word has length 38 [2021-10-13 17:56:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:11,432 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 4170 transitions. [2021-10-13 17:56:11,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4170 transitions. [2021-10-13 17:56:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:11,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:11,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:11,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-10-13 17:56:11,434 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:11,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:11,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1341836385, now seen corresponding path program 247 times [2021-10-13 17:56:11,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:11,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419099637] [2021-10-13 17:56:11,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:11,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:11,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:11,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419099637] [2021-10-13 17:56:11,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419099637] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:11,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:11,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:11,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457998948] [2021-10-13 17:56:11,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:11,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:11,535 INFO L87 Difference]: Start difference. First operand 1406 states and 4170 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:11,907 INFO L93 Difference]: Finished difference Result 1494 states and 4344 transitions. [2021-10-13 17:56:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:11,911 INFO L225 Difference]: With dead ends: 1494 [2021-10-13 17:56:11,911 INFO L226 Difference]: Without dead ends: 1486 [2021-10-13 17:56:11,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-13 17:56:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1408. [2021-10-13 17:56:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.9658848614072495) internal successors, (4173), 1407 states have internal predecessors, (4173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4173 transitions. [2021-10-13 17:56:11,930 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4173 transitions. Word has length 38 [2021-10-13 17:56:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:11,930 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4173 transitions. [2021-10-13 17:56:11,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4173 transitions. [2021-10-13 17:56:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:11,932 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:11,932 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:11,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-10-13 17:56:11,932 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:11,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:11,932 INFO L82 PathProgramCache]: Analyzing trace with hash -219420939, now seen corresponding path program 248 times [2021-10-13 17:56:11,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:11,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300203751] [2021-10-13 17:56:11,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:11,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:12,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:12,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300203751] [2021-10-13 17:56:12,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300203751] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:12,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:12,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:12,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071065615] [2021-10-13 17:56:12,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:12,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:12,026 INFO L87 Difference]: Start difference. First operand 1408 states and 4173 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:12,420 INFO L93 Difference]: Finished difference Result 1500 states and 4355 transitions. [2021-10-13 17:56:12,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:12,421 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:12,423 INFO L225 Difference]: With dead ends: 1500 [2021-10-13 17:56:12,423 INFO L226 Difference]: Without dead ends: 1482 [2021-10-13 17:56:12,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 176.1ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:56:12,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-10-13 17:56:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1412. [2021-10-13 17:56:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 2.9631467044649185) internal successors, (4181), 1411 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4181 transitions. [2021-10-13 17:56:12,442 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4181 transitions. Word has length 38 [2021-10-13 17:56:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:12,443 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4181 transitions. [2021-10-13 17:56:12,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4181 transitions. [2021-10-13 17:56:12,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:12,445 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:12,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:12,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-10-13 17:56:12,445 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:12,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:12,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1199866143, now seen corresponding path program 249 times [2021-10-13 17:56:12,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:12,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4147944] [2021-10-13 17:56:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:12,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:12,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:12,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4147944] [2021-10-13 17:56:12,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4147944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:12,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:12,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:12,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091362444] [2021-10-13 17:56:12,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:12,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:12,533 INFO L87 Difference]: Start difference. First operand 1412 states and 4181 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:12,909 INFO L93 Difference]: Finished difference Result 1518 states and 4387 transitions. [2021-10-13 17:56:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:12,910 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:12,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:12,913 INFO L225 Difference]: With dead ends: 1518 [2021-10-13 17:56:12,913 INFO L226 Difference]: Without dead ends: 1486 [2021-10-13 17:56:12,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 150.9ms TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:12,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-13 17:56:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1400. [2021-10-13 17:56:12,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.9685489635453894) internal successors, (4153), 1399 states have internal predecessors, (4153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4153 transitions. [2021-10-13 17:56:12,932 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4153 transitions. Word has length 38 [2021-10-13 17:56:12,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:12,933 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4153 transitions. [2021-10-13 17:56:12,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4153 transitions. [2021-10-13 17:56:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:12,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:12,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-10-13 17:56:12,935 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:12,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1392885945, now seen corresponding path program 250 times [2021-10-13 17:56:12,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:12,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706010399] [2021-10-13 17:56:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:12,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:13,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:13,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706010399] [2021-10-13 17:56:13,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706010399] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:13,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:13,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:56:13,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49384002] [2021-10-13 17:56:13,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:56:13,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:13,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:56:13,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:56:13,018 INFO L87 Difference]: Start difference. First operand 1400 states and 4153 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:13,312 INFO L93 Difference]: Finished difference Result 1500 states and 4359 transitions. [2021-10-13 17:56:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:13,313 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:13,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:13,315 INFO L225 Difference]: With dead ends: 1500 [2021-10-13 17:56:13,315 INFO L226 Difference]: Without dead ends: 1492 [2021-10-13 17:56:13,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 120.3ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-10-13 17:56:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1402. [2021-10-13 17:56:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 2.967880085653105) internal successors, (4158), 1401 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4158 transitions. [2021-10-13 17:56:13,334 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4158 transitions. Word has length 38 [2021-10-13 17:56:13,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:13,334 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4158 transitions. [2021-10-13 17:56:13,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4158 transitions. [2021-10-13 17:56:13,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:13,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:13,336 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:13,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-10-13 17:56:13,337 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:13,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:13,337 INFO L82 PathProgramCache]: Analyzing trace with hash 285394379, now seen corresponding path program 251 times [2021-10-13 17:56:13,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:13,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972206835] [2021-10-13 17:56:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:13,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:13,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:13,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972206835] [2021-10-13 17:56:13,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972206835] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:13,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:13,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:13,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127383731] [2021-10-13 17:56:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:13,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:13,433 INFO L87 Difference]: Start difference. First operand 1402 states and 4158 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:13,814 INFO L93 Difference]: Finished difference Result 1498 states and 4352 transitions. [2021-10-13 17:56:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:13,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:13,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:13,817 INFO L225 Difference]: With dead ends: 1498 [2021-10-13 17:56:13,817 INFO L226 Difference]: Without dead ends: 1490 [2021-10-13 17:56:13,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:13,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-10-13 17:56:13,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1408. [2021-10-13 17:56:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.9644633972992183) internal successors, (4171), 1407 states have internal predecessors, (4171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4171 transitions. [2021-10-13 17:56:13,850 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4171 transitions. Word has length 38 [2021-10-13 17:56:13,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:13,851 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4171 transitions. [2021-10-13 17:56:13,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4171 transitions. [2021-10-13 17:56:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:13,854 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:13,854 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:13,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-10-13 17:56:13,855 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:13,855 INFO L82 PathProgramCache]: Analyzing trace with hash -708919241, now seen corresponding path program 252 times [2021-10-13 17:56:13,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:13,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114896624] [2021-10-13 17:56:13,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:13,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:13,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:13,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114896624] [2021-10-13 17:56:13,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114896624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:13,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:13,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:13,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652698527] [2021-10-13 17:56:13,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:13,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:13,954 INFO L87 Difference]: Start difference. First operand 1408 states and 4171 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:14,319 INFO L93 Difference]: Finished difference Result 1440 states and 4227 transitions. [2021-10-13 17:56:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:14,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:14,322 INFO L225 Difference]: With dead ends: 1440 [2021-10-13 17:56:14,322 INFO L226 Difference]: Without dead ends: 1422 [2021-10-13 17:56:14,322 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-10-13 17:56:14,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1402. [2021-10-13 17:56:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 2.966452533904354) internal successors, (4156), 1401 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4156 transitions. [2021-10-13 17:56:14,341 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4156 transitions. Word has length 38 [2021-10-13 17:56:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:14,341 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4156 transitions. [2021-10-13 17:56:14,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4156 transitions. [2021-10-13 17:56:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:14,344 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:14,344 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:14,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-10-13 17:56:14,344 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash 871457695, now seen corresponding path program 253 times [2021-10-13 17:56:14,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:14,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813466460] [2021-10-13 17:56:14,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:14,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:14,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:14,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813466460] [2021-10-13 17:56:14,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813466460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:14,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:14,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:14,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002705702] [2021-10-13 17:56:14,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:14,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:14,464 INFO L87 Difference]: Start difference. First operand 1402 states and 4156 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:14,836 INFO L93 Difference]: Finished difference Result 1436 states and 4215 transitions. [2021-10-13 17:56:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:14,839 INFO L225 Difference]: With dead ends: 1436 [2021-10-13 17:56:14,839 INFO L226 Difference]: Without dead ends: 1420 [2021-10-13 17:56:14,840 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 179.5ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:14,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-13 17:56:14,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1400. [2021-10-13 17:56:14,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.9671193709792707) internal successors, (4151), 1399 states have internal predecessors, (4151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4151 transitions. [2021-10-13 17:56:14,858 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4151 transitions. Word has length 38 [2021-10-13 17:56:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:14,859 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4151 transitions. [2021-10-13 17:56:14,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4151 transitions. [2021-10-13 17:56:14,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:14,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:14,861 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:14,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-10-13 17:56:14,862 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:14,862 INFO L82 PathProgramCache]: Analyzing trace with hash -254480955, now seen corresponding path program 254 times [2021-10-13 17:56:14,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:14,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970735338] [2021-10-13 17:56:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:14,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:14,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:14,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970735338] [2021-10-13 17:56:14,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970735338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:14,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:14,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:14,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145242190] [2021-10-13 17:56:14,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:14,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:14,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:14,980 INFO L87 Difference]: Start difference. First operand 1400 states and 4151 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:15,411 INFO L93 Difference]: Finished difference Result 1482 states and 4311 transitions. [2021-10-13 17:56:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:15,414 INFO L225 Difference]: With dead ends: 1482 [2021-10-13 17:56:15,414 INFO L226 Difference]: Without dead ends: 1462 [2021-10-13 17:56:15,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 190.2ms TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-10-13 17:56:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-10-13 17:56:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.9601990049751246) internal successors, (4165), 1407 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4165 transitions. [2021-10-13 17:56:15,435 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4165 transitions. Word has length 38 [2021-10-13 17:56:15,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:15,435 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4165 transitions. [2021-10-13 17:56:15,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4165 transitions. [2021-10-13 17:56:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:15,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:15,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:15,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-10-13 17:56:15,439 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:15,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1958458321, now seen corresponding path program 255 times [2021-10-13 17:56:15,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:15,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717939920] [2021-10-13 17:56:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:15,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:15,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:15,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717939920] [2021-10-13 17:56:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717939920] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:15,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:15,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:15,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737246552] [2021-10-13 17:56:15,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:15,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:15,555 INFO L87 Difference]: Start difference. First operand 1408 states and 4165 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:15,913 INFO L93 Difference]: Finished difference Result 1464 states and 4273 transitions. [2021-10-13 17:56:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:15,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:15,919 INFO L225 Difference]: With dead ends: 1464 [2021-10-13 17:56:15,919 INFO L226 Difference]: Without dead ends: 1446 [2021-10-13 17:56:15,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-13 17:56:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1408. [2021-10-13 17:56:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1408 states, 1407 states have (on average 2.9601990049751246) internal successors, (4165), 1407 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4165 transitions. [2021-10-13 17:56:15,946 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4165 transitions. Word has length 38 [2021-10-13 17:56:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:15,947 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4165 transitions. [2021-10-13 17:56:15,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4165 transitions. [2021-10-13 17:56:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:15,949 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:15,949 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:15,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-10-13 17:56:15,950 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:15,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:15,950 INFO L82 PathProgramCache]: Analyzing trace with hash 768672673, now seen corresponding path program 256 times [2021-10-13 17:56:15,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:15,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194253980] [2021-10-13 17:56:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:15,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:16,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:16,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194253980] [2021-10-13 17:56:16,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194253980] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:16,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:16,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:16,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173657249] [2021-10-13 17:56:16,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:16,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:16,071 INFO L87 Difference]: Start difference. First operand 1408 states and 4165 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:16,476 INFO L93 Difference]: Finished difference Result 1458 states and 4258 transitions. [2021-10-13 17:56:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:16,480 INFO L225 Difference]: With dead ends: 1458 [2021-10-13 17:56:16,480 INFO L226 Difference]: Without dead ends: 1436 [2021-10-13 17:56:16,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 186.5ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:16,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-13 17:56:16,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1402. [2021-10-13 17:56:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 2.965024982155603) internal successors, (4154), 1401 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4154 transitions. [2021-10-13 17:56:16,500 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4154 transitions. Word has length 38 [2021-10-13 17:56:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:16,500 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4154 transitions. [2021-10-13 17:56:16,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4154 transitions. [2021-10-13 17:56:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:16,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:16,502 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:16,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-10-13 17:56:16,503 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:16,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:16,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1929542645, now seen corresponding path program 257 times [2021-10-13 17:56:16,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:16,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887434735] [2021-10-13 17:56:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:16,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:16,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:16,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887434735] [2021-10-13 17:56:16,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887434735] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:16,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:16,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:16,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965974055] [2021-10-13 17:56:16,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:16,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:16,631 INFO L87 Difference]: Start difference. First operand 1402 states and 4154 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:17,069 INFO L93 Difference]: Finished difference Result 1464 states and 4274 transitions. [2021-10-13 17:56:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:17,072 INFO L225 Difference]: With dead ends: 1464 [2021-10-13 17:56:17,072 INFO L226 Difference]: Without dead ends: 1432 [2021-10-13 17:56:17,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 211.8ms TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:56:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-13 17:56:17,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1392. [2021-10-13 17:56:17,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.9712437095614668) internal successors, (4133), 1391 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4133 transitions. [2021-10-13 17:56:17,092 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4133 transitions. Word has length 38 [2021-10-13 17:56:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:17,092 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 4133 transitions. [2021-10-13 17:56:17,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4133 transitions. [2021-10-13 17:56:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:17,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:17,094 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:17,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-10-13 17:56:17,095 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1033642789, now seen corresponding path program 258 times [2021-10-13 17:56:17,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:17,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006687208] [2021-10-13 17:56:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:17,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:17,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:17,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006687208] [2021-10-13 17:56:17,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006687208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:17,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:17,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:17,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700106401] [2021-10-13 17:56:17,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:17,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:17,180 INFO L87 Difference]: Start difference. First operand 1392 states and 4133 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:17,470 INFO L93 Difference]: Finished difference Result 1526 states and 4404 transitions. [2021-10-13 17:56:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:17,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:17,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:17,473 INFO L225 Difference]: With dead ends: 1526 [2021-10-13 17:56:17,473 INFO L226 Difference]: Without dead ends: 1518 [2021-10-13 17:56:17,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-13 17:56:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1400. [2021-10-13 17:56:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.971408148677627) internal successors, (4157), 1399 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4157 transitions. [2021-10-13 17:56:17,493 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4157 transitions. Word has length 38 [2021-10-13 17:56:17,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:17,493 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4157 transitions. [2021-10-13 17:56:17,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4157 transitions. [2021-10-13 17:56:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:17,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:17,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:17,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-10-13 17:56:17,495 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash -770456959, now seen corresponding path program 259 times [2021-10-13 17:56:17,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:17,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453363411] [2021-10-13 17:56:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:17,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:17,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:17,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453363411] [2021-10-13 17:56:17,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453363411] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:17,591 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:17,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:17,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005053562] [2021-10-13 17:56:17,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:17,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:17,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:17,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:17,593 INFO L87 Difference]: Start difference. First operand 1400 states and 4157 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:17,933 INFO L93 Difference]: Finished difference Result 1516 states and 4385 transitions. [2021-10-13 17:56:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:17,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:17,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:17,937 INFO L225 Difference]: With dead ends: 1516 [2021-10-13 17:56:17,937 INFO L226 Difference]: Without dead ends: 1498 [2021-10-13 17:56:17,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 144.4ms TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-10-13 17:56:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1398. [2021-10-13 17:56:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.972083035075161) internal successors, (4152), 1397 states have internal predecessors, (4152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4152 transitions. [2021-10-13 17:56:17,973 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4152 transitions. Word has length 38 [2021-10-13 17:56:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:17,974 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4152 transitions. [2021-10-13 17:56:17,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4152 transitions. [2021-10-13 17:56:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:17,976 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:17,976 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:17,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-10-13 17:56:17,976 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:17,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:17,977 INFO L82 PathProgramCache]: Analyzing trace with hash 894866779, now seen corresponding path program 260 times [2021-10-13 17:56:17,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:17,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049029194] [2021-10-13 17:56:17,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:17,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:17,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:18,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:18,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049029194] [2021-10-13 17:56:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049029194] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:18,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:18,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788914673] [2021-10-13 17:56:18,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:18,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:18,062 INFO L87 Difference]: Start difference. First operand 1398 states and 4152 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:18,414 INFO L93 Difference]: Finished difference Result 1520 states and 4387 transitions. [2021-10-13 17:56:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:18,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:18,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:18,418 INFO L225 Difference]: With dead ends: 1520 [2021-10-13 17:56:18,418 INFO L226 Difference]: Without dead ends: 1512 [2021-10-13 17:56:18,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 130.4ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-10-13 17:56:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1404. [2021-10-13 17:56:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.96863863150392) internal successors, (4165), 1403 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4165 transitions. [2021-10-13 17:56:18,438 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4165 transitions. Word has length 38 [2021-10-13 17:56:18,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:18,438 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4165 transitions. [2021-10-13 17:56:18,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4165 transitions. [2021-10-13 17:56:18,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:18,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:18,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:18,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-10-13 17:56:18,440 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:18,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:18,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1467898943, now seen corresponding path program 261 times [2021-10-13 17:56:18,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:18,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644090542] [2021-10-13 17:56:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:18,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:18,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:18,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644090542] [2021-10-13 17:56:18,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644090542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:18,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:18,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:18,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132552195] [2021-10-13 17:56:18,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:18,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:18,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:18,525 INFO L87 Difference]: Start difference. First operand 1404 states and 4165 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:18,830 INFO L93 Difference]: Finished difference Result 1504 states and 4345 transitions. [2021-10-13 17:56:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:18,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:18,833 INFO L225 Difference]: With dead ends: 1504 [2021-10-13 17:56:18,833 INFO L226 Difference]: Without dead ends: 1486 [2021-10-13 17:56:18,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:56:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-13 17:56:18,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1398. [2021-10-13 17:56:18,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.9677881173944165) internal successors, (4146), 1397 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4146 transitions. [2021-10-13 17:56:18,853 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4146 transitions. Word has length 38 [2021-10-13 17:56:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:18,853 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4146 transitions. [2021-10-13 17:56:18,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:18,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4146 transitions. [2021-10-13 17:56:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:18,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:18,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:18,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-10-13 17:56:18,856 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:18,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:18,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1001750309, now seen corresponding path program 262 times [2021-10-13 17:56:18,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:18,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878788140] [2021-10-13 17:56:18,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:18,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:18,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:18,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878788140] [2021-10-13 17:56:18,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878788140] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:18,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:18,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:18,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797546661] [2021-10-13 17:56:18,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:18,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:18,951 INFO L87 Difference]: Start difference. First operand 1398 states and 4146 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:19,344 INFO L93 Difference]: Finished difference Result 1512 states and 4367 transitions. [2021-10-13 17:56:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:19,347 INFO L225 Difference]: With dead ends: 1512 [2021-10-13 17:56:19,347 INFO L226 Difference]: Without dead ends: 1496 [2021-10-13 17:56:19,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-13 17:56:19,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1404. [2021-10-13 17:56:19,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.9643620812544547) internal successors, (4159), 1403 states have internal predecessors, (4159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4159 transitions. [2021-10-13 17:56:19,367 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4159 transitions. Word has length 38 [2021-10-13 17:56:19,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:19,367 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4159 transitions. [2021-10-13 17:56:19,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4159 transitions. [2021-10-13 17:56:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:19,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:19,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:19,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-10-13 17:56:19,369 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1560416283, now seen corresponding path program 263 times [2021-10-13 17:56:19,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:19,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133631092] [2021-10-13 17:56:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:19,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:19,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:19,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:19,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133631092] [2021-10-13 17:56:19,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133631092] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:19,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:19,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:19,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284305109] [2021-10-13 17:56:19,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:19,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:19,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:19,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:19,455 INFO L87 Difference]: Start difference. First operand 1404 states and 4159 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:19,902 INFO L93 Difference]: Finished difference Result 1528 states and 4398 transitions. [2021-10-13 17:56:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:19,906 INFO L225 Difference]: With dead ends: 1528 [2021-10-13 17:56:19,907 INFO L226 Difference]: Without dead ends: 1496 [2021-10-13 17:56:19,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 141.0ms TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-13 17:56:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1392. [2021-10-13 17:56:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1391 states have (on average 2.96980589503954) internal successors, (4131), 1391 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4131 transitions. [2021-10-13 17:56:19,933 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4131 transitions. Word has length 38 [2021-10-13 17:56:19,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:19,933 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 4131 transitions. [2021-10-13 17:56:19,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:19,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4131 transitions. [2021-10-13 17:56:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:19,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:19,935 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:19,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-10-13 17:56:19,936 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:19,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:19,936 INFO L82 PathProgramCache]: Analyzing trace with hash 994984833, now seen corresponding path program 264 times [2021-10-13 17:56:19,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:19,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546363339] [2021-10-13 17:56:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:19,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:20,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:20,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:20,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546363339] [2021-10-13 17:56:20,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546363339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:20,049 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:20,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:20,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414839260] [2021-10-13 17:56:20,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:20,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:20,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:20,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:20,050 INFO L87 Difference]: Start difference. First operand 1392 states and 4131 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:20,430 INFO L93 Difference]: Finished difference Result 1502 states and 4336 transitions. [2021-10-13 17:56:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:20,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:20,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:20,433 INFO L225 Difference]: With dead ends: 1502 [2021-10-13 17:56:20,433 INFO L226 Difference]: Without dead ends: 1494 [2021-10-13 17:56:20,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 147.7ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:20,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-13 17:56:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1404. [2021-10-13 17:56:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.96863863150392) internal successors, (4165), 1403 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4165 transitions. [2021-10-13 17:56:20,452 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4165 transitions. Word has length 38 [2021-10-13 17:56:20,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:20,452 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4165 transitions. [2021-10-13 17:56:20,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4165 transitions. [2021-10-13 17:56:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:20,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:20,454 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:20,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-10-13 17:56:20,454 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:20,455 INFO L82 PathProgramCache]: Analyzing trace with hash 671213, now seen corresponding path program 265 times [2021-10-13 17:56:20,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:20,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144451223] [2021-10-13 17:56:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:20,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:20,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:20,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144451223] [2021-10-13 17:56:20,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144451223] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:20,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:20,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:20,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627692465] [2021-10-13 17:56:20,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:20,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:20,556 INFO L87 Difference]: Start difference. First operand 1404 states and 4165 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:20,870 INFO L93 Difference]: Finished difference Result 1478 states and 4282 transitions. [2021-10-13 17:56:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:20,873 INFO L225 Difference]: With dead ends: 1478 [2021-10-13 17:56:20,873 INFO L226 Difference]: Without dead ends: 1460 [2021-10-13 17:56:20,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:56:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-13 17:56:20,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1398. [2021-10-13 17:56:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.9677881173944165) internal successors, (4146), 1397 states have internal predecessors, (4146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4146 transitions. [2021-10-13 17:56:20,892 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4146 transitions. Word has length 38 [2021-10-13 17:56:20,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:20,892 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4146 transitions. [2021-10-13 17:56:20,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:20,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4146 transitions. [2021-10-13 17:56:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:20,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:20,894 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:20,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-10-13 17:56:20,894 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:20,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1646991067, now seen corresponding path program 266 times [2021-10-13 17:56:20,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:20,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119406184] [2021-10-13 17:56:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:20,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:20,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:20,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119406184] [2021-10-13 17:56:20,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119406184] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:20,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:20,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:20,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596932187] [2021-10-13 17:56:20,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:20,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:20,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:20,999 INFO L87 Difference]: Start difference. First operand 1398 states and 4146 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:21,305 INFO L93 Difference]: Finished difference Result 1510 states and 4352 transitions. [2021-10-13 17:56:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:21,308 INFO L225 Difference]: With dead ends: 1510 [2021-10-13 17:56:21,308 INFO L226 Difference]: Without dead ends: 1502 [2021-10-13 17:56:21,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 130.7ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-10-13 17:56:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1400. [2021-10-13 17:56:21,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 2.9656897784131524) internal successors, (4149), 1399 states have internal predecessors, (4149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4149 transitions. [2021-10-13 17:56:21,327 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4149 transitions. Word has length 38 [2021-10-13 17:56:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:21,327 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4149 transitions. [2021-10-13 17:56:21,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4149 transitions. [2021-10-13 17:56:21,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:21,329 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:21,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:21,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-10-13 17:56:21,330 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:21,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:21,330 INFO L82 PathProgramCache]: Analyzing trace with hash -524575621, now seen corresponding path program 267 times [2021-10-13 17:56:21,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:21,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358980392] [2021-10-13 17:56:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:21,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:21,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:21,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358980392] [2021-10-13 17:56:21,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358980392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:21,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:21,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:21,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839720950] [2021-10-13 17:56:21,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:21,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:21,424 INFO L87 Difference]: Start difference. First operand 1400 states and 4149 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:21,754 INFO L93 Difference]: Finished difference Result 1500 states and 4333 transitions. [2021-10-13 17:56:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:21,757 INFO L225 Difference]: With dead ends: 1500 [2021-10-13 17:56:21,757 INFO L226 Difference]: Without dead ends: 1482 [2021-10-13 17:56:21,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:21,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-10-13 17:56:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1398. [2021-10-13 17:56:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 2.966356478167502) internal successors, (4144), 1397 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4144 transitions. [2021-10-13 17:56:21,776 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4144 transitions. Word has length 38 [2021-10-13 17:56:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:21,776 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4144 transitions. [2021-10-13 17:56:21,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:21,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4144 transitions. [2021-10-13 17:56:21,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:21,778 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:21,778 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:21,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-10-13 17:56:21,778 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:21,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:21,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1283526769, now seen corresponding path program 268 times [2021-10-13 17:56:21,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:21,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630620502] [2021-10-13 17:56:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:21,779 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:21,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:21,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:21,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630620502] [2021-10-13 17:56:21,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630620502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:21,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:21,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:21,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967209438] [2021-10-13 17:56:21,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:21,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:21,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:21,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:21,873 INFO L87 Difference]: Start difference. First operand 1398 states and 4144 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:22,249 INFO L93 Difference]: Finished difference Result 1488 states and 4303 transitions. [2021-10-13 17:56:22,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:22,252 INFO L225 Difference]: With dead ends: 1488 [2021-10-13 17:56:22,252 INFO L226 Difference]: Without dead ends: 1472 [2021-10-13 17:56:22,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 148.0ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-10-13 17:56:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1404. [2021-10-13 17:56:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1403 states have (on average 2.962936564504633) internal successors, (4157), 1403 states have internal predecessors, (4157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4157 transitions. [2021-10-13 17:56:22,272 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4157 transitions. Word has length 38 [2021-10-13 17:56:22,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:22,272 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4157 transitions. [2021-10-13 17:56:22,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4157 transitions. [2021-10-13 17:56:22,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:22,274 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:22,274 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:22,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-10-13 17:56:22,274 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:22,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:22,274 INFO L82 PathProgramCache]: Analyzing trace with hash 894711461, now seen corresponding path program 269 times [2021-10-13 17:56:22,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:22,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302821811] [2021-10-13 17:56:22,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:22,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:22,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:22,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302821811] [2021-10-13 17:56:22,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302821811] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:22,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:22,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:22,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057309950] [2021-10-13 17:56:22,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:22,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:22,366 INFO L87 Difference]: Start difference. First operand 1404 states and 4157 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:22,742 INFO L93 Difference]: Finished difference Result 1504 states and 4334 transitions. [2021-10-13 17:56:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:22,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:22,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:22,746 INFO L225 Difference]: With dead ends: 1504 [2021-10-13 17:56:22,746 INFO L226 Difference]: Without dead ends: 1470 [2021-10-13 17:56:22,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 144.0ms TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:22,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-10-13 17:56:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1390. [2021-10-13 17:56:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.970482361411087) internal successors, (4126), 1389 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4126 transitions. [2021-10-13 17:56:22,766 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4126 transitions. Word has length 38 [2021-10-13 17:56:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:22,766 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 4126 transitions. [2021-10-13 17:56:22,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:22,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4126 transitions. [2021-10-13 17:56:22,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:22,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:22,768 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:22,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-10-13 17:56:22,768 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:22,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:22,769 INFO L82 PathProgramCache]: Analyzing trace with hash -358685355, now seen corresponding path program 270 times [2021-10-13 17:56:22,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:22,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860194136] [2021-10-13 17:56:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:22,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:22,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:22,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860194136] [2021-10-13 17:56:22,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860194136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:22,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:22,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:22,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327415360] [2021-10-13 17:56:22,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:22,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:22,871 INFO L87 Difference]: Start difference. First operand 1390 states and 4126 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:23,219 INFO L93 Difference]: Finished difference Result 1444 states and 4221 transitions. [2021-10-13 17:56:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:23,224 INFO L225 Difference]: With dead ends: 1444 [2021-10-13 17:56:23,224 INFO L226 Difference]: Without dead ends: 1436 [2021-10-13 17:56:23,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 151.0ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:23,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-13 17:56:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1390. [2021-10-13 17:56:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 2.9690424766018717) internal successors, (4124), 1389 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4124 transitions. [2021-10-13 17:56:23,253 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4124 transitions. Word has length 38 [2021-10-13 17:56:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:23,253 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 4124 transitions. [2021-10-13 17:56:23,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,253 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4124 transitions. [2021-10-13 17:56:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:23,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:23,255 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:23,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-10-13 17:56:23,255 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:23,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:23,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2132182193, now seen corresponding path program 271 times [2021-10-13 17:56:23,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:23,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535025264] [2021-10-13 17:56:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:23,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:23,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:23,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:23,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535025264] [2021-10-13 17:56:23,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535025264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:23,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:23,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:23,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307374137] [2021-10-13 17:56:23,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:23,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:23,372 INFO L87 Difference]: Start difference. First operand 1390 states and 4124 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:23,742 INFO L93 Difference]: Finished difference Result 1442 states and 4220 transitions. [2021-10-13 17:56:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:23,743 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:23,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:23,745 INFO L225 Difference]: With dead ends: 1442 [2021-10-13 17:56:23,745 INFO L226 Difference]: Without dead ends: 1424 [2021-10-13 17:56:23,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 165.5ms TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-10-13 17:56:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1388. [2021-10-13 17:56:23,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 2.969718817591925) internal successors, (4119), 1387 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4119 transitions. [2021-10-13 17:56:23,764 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4119 transitions. Word has length 38 [2021-10-13 17:56:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:23,764 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 4119 transitions. [2021-10-13 17:56:23,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4119 transitions. [2021-10-13 17:56:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:23,767 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:23,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:23,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-10-13 17:56:23,767 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:23,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:23,767 INFO L82 PathProgramCache]: Analyzing trace with hash -497461365, now seen corresponding path program 272 times [2021-10-13 17:56:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:23,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213031906] [2021-10-13 17:56:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:23,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:23,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:23,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:23,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213031906] [2021-10-13 17:56:23,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213031906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:23,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:23,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:23,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21769956] [2021-10-13 17:56:23,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:23,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:23,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:23,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:23,883 INFO L87 Difference]: Start difference. First operand 1388 states and 4119 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:24,307 INFO L93 Difference]: Finished difference Result 1454 states and 4232 transitions. [2021-10-13 17:56:24,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:24,307 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:24,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:24,311 INFO L225 Difference]: With dead ends: 1454 [2021-10-13 17:56:24,311 INFO L226 Difference]: Without dead ends: 1446 [2021-10-13 17:56:24,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 159.4ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-13 17:56:24,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1386. [2021-10-13 17:56:24,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 2.9703971119133574) internal successors, (4114), 1385 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4114 transitions. [2021-10-13 17:56:24,334 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4114 transitions. Word has length 38 [2021-10-13 17:56:24,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:24,335 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 4114 transitions. [2021-10-13 17:56:24,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4114 transitions. [2021-10-13 17:56:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:24,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:24,337 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:24,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-10-13 17:56:24,337 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:24,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1434740209, now seen corresponding path program 273 times [2021-10-13 17:56:24,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:24,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534630861] [2021-10-13 17:56:24,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:24,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:24,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:24,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534630861] [2021-10-13 17:56:24,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534630861] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:24,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:24,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:24,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469716303] [2021-10-13 17:56:24,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:24,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:24,448 INFO L87 Difference]: Start difference. First operand 1386 states and 4114 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:24,805 INFO L93 Difference]: Finished difference Result 1438 states and 4190 transitions. [2021-10-13 17:56:24,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:24,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:24,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:24,808 INFO L225 Difference]: With dead ends: 1438 [2021-10-13 17:56:24,808 INFO L226 Difference]: Without dead ends: 1420 [2021-10-13 17:56:24,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 128.8ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:56:24,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-13 17:56:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1380. [2021-10-13 17:56:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 2.969543147208122) internal successors, (4095), 1379 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4095 transitions. [2021-10-13 17:56:24,830 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4095 transitions. Word has length 38 [2021-10-13 17:56:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:24,831 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 4095 transitions. [2021-10-13 17:56:24,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4095 transitions. [2021-10-13 17:56:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:24,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:24,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:24,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-10-13 17:56:24,833 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:24,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:24,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1900888843, now seen corresponding path program 274 times [2021-10-13 17:56:24,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:24,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702641321] [2021-10-13 17:56:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:24,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:24,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:24,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:24,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702641321] [2021-10-13 17:56:24,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702641321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:24,965 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:24,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:24,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911218423] [2021-10-13 17:56:24,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:24,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:24,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:24,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:24,966 INFO L87 Difference]: Start difference. First operand 1380 states and 4095 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:25,382 INFO L93 Difference]: Finished difference Result 1446 states and 4212 transitions. [2021-10-13 17:56:25,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:25,385 INFO L225 Difference]: With dead ends: 1446 [2021-10-13 17:56:25,385 INFO L226 Difference]: Without dead ends: 1430 [2021-10-13 17:56:25,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 188.2ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:25,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-13 17:56:25,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1378. [2021-10-13 17:56:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1377 states have (on average 2.9702251270878723) internal successors, (4090), 1377 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 4090 transitions. [2021-10-13 17:56:25,406 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 4090 transitions. Word has length 38 [2021-10-13 17:56:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:25,406 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 4090 transitions. [2021-10-13 17:56:25,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 4090 transitions. [2021-10-13 17:56:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:25,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:25,409 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:25,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-10-13 17:56:25,409 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:25,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222869, now seen corresponding path program 275 times [2021-10-13 17:56:25,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:25,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820182620] [2021-10-13 17:56:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:25,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:25,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:25,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:25,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820182620] [2021-10-13 17:56:25,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820182620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:25,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:25,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:25,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305889468] [2021-10-13 17:56:25,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:25,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:25,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:25,532 INFO L87 Difference]: Start difference. First operand 1378 states and 4090 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:25,981 INFO L93 Difference]: Finished difference Result 1462 states and 4243 transitions. [2021-10-13 17:56:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:25,984 INFO L225 Difference]: With dead ends: 1462 [2021-10-13 17:56:25,984 INFO L226 Difference]: Without dead ends: 1430 [2021-10-13 17:56:25,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 167.1ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:25,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-13 17:56:26,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1366. [2021-10-13 17:56:26,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 1365 states have (on average 2.975824175824176) internal successors, (4062), 1365 states have internal predecessors, (4062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4062 transitions. [2021-10-13 17:56:26,006 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4062 transitions. Word has length 38 [2021-10-13 17:56:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:26,007 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4062 transitions. [2021-10-13 17:56:26,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4062 transitions. [2021-10-13 17:56:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:26,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:26,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:26,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-10-13 17:56:26,009 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:26,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1583268659, now seen corresponding path program 276 times [2021-10-13 17:56:26,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:26,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097778219] [2021-10-13 17:56:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:26,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:26,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:26,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097778219] [2021-10-13 17:56:26,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097778219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:26,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:26,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:26,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010707456] [2021-10-13 17:56:26,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:26,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:26,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:26,116 INFO L87 Difference]: Start difference. First operand 1366 states and 4062 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:26,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:26,507 INFO L93 Difference]: Finished difference Result 1410 states and 4142 transitions. [2021-10-13 17:56:26,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:26,508 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:26,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:26,511 INFO L225 Difference]: With dead ends: 1410 [2021-10-13 17:56:26,511 INFO L226 Difference]: Without dead ends: 1402 [2021-10-13 17:56:26,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 164.2ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-10-13 17:56:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1362. [2021-10-13 17:56:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1361 states have (on average 2.97722263041881) internal successors, (4052), 1361 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4052 transitions. [2021-10-13 17:56:26,533 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4052 transitions. Word has length 38 [2021-10-13 17:56:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:26,533 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4052 transitions. [2021-10-13 17:56:26,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:26,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4052 transitions. [2021-10-13 17:56:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:26,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:26,536 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:26,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-10-13 17:56:26,536 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:26,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:26,536 INFO L82 PathProgramCache]: Analyzing trace with hash -511440951, now seen corresponding path program 277 times [2021-10-13 17:56:26,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:26,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317312058] [2021-10-13 17:56:26,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:26,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:26,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:26,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:26,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317312058] [2021-10-13 17:56:26,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317312058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:26,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:26,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:26,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958973423] [2021-10-13 17:56:26,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:26,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:26,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:26,726 INFO L87 Difference]: Start difference. First operand 1362 states and 4052 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:27,176 INFO L93 Difference]: Finished difference Result 1408 states and 4135 transitions. [2021-10-13 17:56:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:27,179 INFO L225 Difference]: With dead ends: 1408 [2021-10-13 17:56:27,179 INFO L226 Difference]: Without dead ends: 1400 [2021-10-13 17:56:27,179 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 188.8ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-10-13 17:56:27,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1360. [2021-10-13 17:56:27,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 2.977924944812362) internal successors, (4047), 1359 states have internal predecessors, (4047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4047 transitions. [2021-10-13 17:56:27,200 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4047 transitions. Word has length 38 [2021-10-13 17:56:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:27,200 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4047 transitions. [2021-10-13 17:56:27,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4047 transitions. [2021-10-13 17:56:27,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:27,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:27,203 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:27,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-10-13 17:56:27,203 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:27,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:27,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1420760623, now seen corresponding path program 278 times [2021-10-13 17:56:27,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:27,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599162359] [2021-10-13 17:56:27,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:27,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:27,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:27,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599162359] [2021-10-13 17:56:27,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599162359] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:27,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:27,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:27,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482080361] [2021-10-13 17:56:27,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:27,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:27,335 INFO L87 Difference]: Start difference. First operand 1360 states and 4047 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:27,707 INFO L93 Difference]: Finished difference Result 1388 states and 4087 transitions. [2021-10-13 17:56:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:27,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:27,711 INFO L225 Difference]: With dead ends: 1388 [2021-10-13 17:56:27,711 INFO L226 Difference]: Without dead ends: 1370 [2021-10-13 17:56:27,711 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 162.0ms TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-13 17:56:27,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1354. [2021-10-13 17:56:27,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1354 states, 1353 states have (on average 2.9800443458980044) internal successors, (4032), 1353 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4032 transitions. [2021-10-13 17:56:27,731 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4032 transitions. Word has length 38 [2021-10-13 17:56:27,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:27,731 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4032 transitions. [2021-10-13 17:56:27,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:27,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4032 transitions. [2021-10-13 17:56:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:27,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:27,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:27,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-10-13 17:56:27,733 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:27,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:27,733 INFO L82 PathProgramCache]: Analyzing trace with hash 160546261, now seen corresponding path program 279 times [2021-10-13 17:56:27,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:27,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164042940] [2021-10-13 17:56:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:27,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:27,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:27,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164042940] [2021-10-13 17:56:27,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164042940] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:27,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:27,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:27,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611233236] [2021-10-13 17:56:27,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:27,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:27,846 INFO L87 Difference]: Start difference. First operand 1354 states and 4032 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:28,180 INFO L93 Difference]: Finished difference Result 1386 states and 4078 transitions. [2021-10-13 17:56:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:28,184 INFO L225 Difference]: With dead ends: 1386 [2021-10-13 17:56:28,184 INFO L226 Difference]: Without dead ends: 1370 [2021-10-13 17:56:28,184 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 148.6ms TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-13 17:56:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1352. [2021-10-13 17:56:28,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 2.9807549962990376) internal successors, (4027), 1351 states have internal predecessors, (4027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4027 transitions. [2021-10-13 17:56:28,203 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4027 transitions. Word has length 38 [2021-10-13 17:56:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:28,204 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4027 transitions. [2021-10-13 17:56:28,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4027 transitions. [2021-10-13 17:56:28,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:28,206 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:28,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:28,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-10-13 17:56:28,206 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:28,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:28,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1107735027, now seen corresponding path program 280 times [2021-10-13 17:56:28,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:28,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323207964] [2021-10-13 17:56:28,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:28,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:28,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:28,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323207964] [2021-10-13 17:56:28,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323207964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:28,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:28,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:28,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669766719] [2021-10-13 17:56:28,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:28,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:28,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:28,325 INFO L87 Difference]: Start difference. First operand 1352 states and 4027 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:28,721 INFO L93 Difference]: Finished difference Result 1372 states and 4059 transitions. [2021-10-13 17:56:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:28,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:28,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:28,724 INFO L225 Difference]: With dead ends: 1372 [2021-10-13 17:56:28,724 INFO L226 Difference]: Without dead ends: 1354 [2021-10-13 17:56:28,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 175.2ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:28,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-13 17:56:28,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1346. [2021-10-13 17:56:28,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1346 states, 1345 states have (on average 2.982899628252788) internal successors, (4012), 1345 states have internal predecessors, (4012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4012 transitions. [2021-10-13 17:56:28,743 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4012 transitions. Word has length 38 [2021-10-13 17:56:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:28,743 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4012 transitions. [2021-10-13 17:56:28,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:28,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4012 transitions. [2021-10-13 17:56:28,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:28,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:28,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:28,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-10-13 17:56:28,745 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:28,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:28,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1488949285, now seen corresponding path program 281 times [2021-10-13 17:56:28,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:28,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718780754] [2021-10-13 17:56:28,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:28,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:28,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:28,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718780754] [2021-10-13 17:56:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718780754] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:28,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535161457] [2021-10-13 17:56:28,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:28,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:28,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:28,869 INFO L87 Difference]: Start difference. First operand 1346 states and 4012 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:29,286 INFO L93 Difference]: Finished difference Result 1368 states and 4047 transitions. [2021-10-13 17:56:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:29,286 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:29,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:29,289 INFO L225 Difference]: With dead ends: 1368 [2021-10-13 17:56:29,289 INFO L226 Difference]: Without dead ends: 1352 [2021-10-13 17:56:29,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 211.8ms TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:56:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-13 17:56:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1344. [2021-10-13 17:56:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1344 states, 1343 states have (on average 2.983618763961281) internal successors, (4007), 1343 states have internal predecessors, (4007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4007 transitions. [2021-10-13 17:56:29,309 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4007 transitions. Word has length 38 [2021-10-13 17:56:29,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:29,309 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4007 transitions. [2021-10-13 17:56:29,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4007 transitions. [2021-10-13 17:56:29,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:29,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:29,312 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:29,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-10-13 17:56:29,312 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:29,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:29,312 INFO L82 PathProgramCache]: Analyzing trace with hash 930283311, now seen corresponding path program 282 times [2021-10-13 17:56:29,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:29,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774114528] [2021-10-13 17:56:29,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:29,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:29,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:29,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774114528] [2021-10-13 17:56:29,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774114528] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:29,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:29,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:29,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71506518] [2021-10-13 17:56:29,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:29,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:29,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:29,434 INFO L87 Difference]: Start difference. First operand 1344 states and 4007 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:29,889 INFO L93 Difference]: Finished difference Result 1404 states and 4124 transitions. [2021-10-13 17:56:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 17:56:29,890 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:29,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:29,892 INFO L225 Difference]: With dead ends: 1404 [2021-10-13 17:56:29,892 INFO L226 Difference]: Without dead ends: 1378 [2021-10-13 17:56:29,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 205.6ms TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:56:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-10-13 17:56:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1338. [2021-10-13 17:56:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1337 states have (on average 2.985789080029918) internal successors, (3992), 1337 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 3992 transitions. [2021-10-13 17:56:29,911 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 3992 transitions. Word has length 38 [2021-10-13 17:56:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:29,911 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 3992 transitions. [2021-10-13 17:56:29,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 3992 transitions. [2021-10-13 17:56:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:29,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:29,914 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:29,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-10-13 17:56:29,914 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:29,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:29,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1345474353, now seen corresponding path program 283 times [2021-10-13 17:56:29,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:29,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754677575] [2021-10-13 17:56:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:29,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:30,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:30,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754677575] [2021-10-13 17:56:30,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754677575] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:30,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:30,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:30,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431222513] [2021-10-13 17:56:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:30,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:30,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:30,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:30,042 INFO L87 Difference]: Start difference. First operand 1338 states and 3992 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:30,401 INFO L93 Difference]: Finished difference Result 1326 states and 3960 transitions. [2021-10-13 17:56:30,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:56:30,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:30,404 INFO L225 Difference]: With dead ends: 1326 [2021-10-13 17:56:30,404 INFO L226 Difference]: Without dead ends: 1300 [2021-10-13 17:56:30,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 191.4ms TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:56:30,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-13 17:56:30,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2021-10-13 17:56:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.0153964588144726) internal successors, (3917), 1299 states have internal predecessors, (3917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 3917 transitions. [2021-10-13 17:56:30,422 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 3917 transitions. Word has length 38 [2021-10-13 17:56:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:30,422 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 3917 transitions. [2021-10-13 17:56:30,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 3917 transitions. [2021-10-13 17:56:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:30,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:30,424 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:30,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-10-13 17:56:30,425 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:30,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:30,425 INFO L82 PathProgramCache]: Analyzing trace with hash -34513417, now seen corresponding path program 284 times [2021-10-13 17:56:30,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:30,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197369272] [2021-10-13 17:56:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:30,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:30,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:30,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197369272] [2021-10-13 17:56:30,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197369272] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:30,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:30,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:30,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959253015] [2021-10-13 17:56:30,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:30,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:30,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:30,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:30,520 INFO L87 Difference]: Start difference. First operand 1300 states and 3917 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:30,850 INFO L93 Difference]: Finished difference Result 1354 states and 4012 transitions. [2021-10-13 17:56:30,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:30,851 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:30,853 INFO L225 Difference]: With dead ends: 1354 [2021-10-13 17:56:30,853 INFO L226 Difference]: Without dead ends: 1346 [2021-10-13 17:56:30,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 127.2ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:30,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-10-13 17:56:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1300. [2021-10-13 17:56:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1299 states have (on average 3.0138568129330254) internal successors, (3915), 1299 states have internal predecessors, (3915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 3915 transitions. [2021-10-13 17:56:30,871 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 3915 transitions. Word has length 38 [2021-10-13 17:56:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:30,871 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 3915 transitions. [2021-10-13 17:56:30,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:30,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 3915 transitions. [2021-10-13 17:56:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:30,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:30,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:30,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-10-13 17:56:30,874 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:30,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1028827037, now seen corresponding path program 285 times [2021-10-13 17:56:30,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:30,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933481311] [2021-10-13 17:56:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:30,874 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:30,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:30,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933481311] [2021-10-13 17:56:30,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933481311] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:30,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:30,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:30,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805350192] [2021-10-13 17:56:30,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:30,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:30,976 INFO L87 Difference]: Start difference. First operand 1300 states and 3915 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:31,274 INFO L93 Difference]: Finished difference Result 1330 states and 3958 transitions. [2021-10-13 17:56:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:31,277 INFO L225 Difference]: With dead ends: 1330 [2021-10-13 17:56:31,277 INFO L226 Difference]: Without dead ends: 1312 [2021-10-13 17:56:31,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 117.1ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:56:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-13 17:56:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1294. [2021-10-13 17:56:31,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1294 states, 1293 states have (on average 3.0131477184841455) internal successors, (3896), 1293 states have internal predecessors, (3896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3896 transitions. [2021-10-13 17:56:31,295 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3896 transitions. Word has length 38 [2021-10-13 17:56:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:31,296 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3896 transitions. [2021-10-13 17:56:31,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3896 transitions. [2021-10-13 17:56:31,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:31,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:31,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:31,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-10-13 17:56:31,298 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:31,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1618477979, now seen corresponding path program 286 times [2021-10-13 17:56:31,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:31,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072205143] [2021-10-13 17:56:31,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:31,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:31,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:31,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072205143] [2021-10-13 17:56:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072205143] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:31,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:31,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:31,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034700175] [2021-10-13 17:56:31,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:31,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:31,407 INFO L87 Difference]: Start difference. First operand 1294 states and 3896 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:31,700 INFO L93 Difference]: Finished difference Result 1338 states and 3976 transitions. [2021-10-13 17:56:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:31,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:31,704 INFO L225 Difference]: With dead ends: 1338 [2021-10-13 17:56:31,705 INFO L226 Difference]: Without dead ends: 1330 [2021-10-13 17:56:31,705 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-13 17:56:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1292. [2021-10-13 17:56:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 3.0139426800929514) internal successors, (3891), 1291 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 3891 transitions. [2021-10-13 17:56:31,726 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 3891 transitions. Word has length 38 [2021-10-13 17:56:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:31,726 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 3891 transitions. [2021-10-13 17:56:31,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 3891 transitions. [2021-10-13 17:56:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:31,728 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:31,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:31,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-10-13 17:56:31,728 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:31,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1554073871, now seen corresponding path program 287 times [2021-10-13 17:56:31,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:31,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166407397] [2021-10-13 17:56:31,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:31,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:31,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:31,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166407397] [2021-10-13 17:56:31,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166407397] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:31,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:31,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:31,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479141661] [2021-10-13 17:56:31,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:31,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:31,823 INFO L87 Difference]: Start difference. First operand 1292 states and 3891 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:32,121 INFO L93 Difference]: Finished difference Result 1344 states and 3987 transitions. [2021-10-13 17:56:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:32,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:32,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:32,124 INFO L225 Difference]: With dead ends: 1344 [2021-10-13 17:56:32,125 INFO L226 Difference]: Without dead ends: 1326 [2021-10-13 17:56:32,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-13 17:56:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1290. [2021-10-13 17:56:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 3.014740108611327) internal successors, (3886), 1289 states have internal predecessors, (3886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3886 transitions. [2021-10-13 17:56:32,142 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3886 transitions. Word has length 38 [2021-10-13 17:56:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:32,142 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 3886 transitions. [2021-10-13 17:56:32,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3886 transitions. [2021-10-13 17:56:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:32,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:32,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:32,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-10-13 17:56:32,144 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:32,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1981942277, now seen corresponding path program 288 times [2021-10-13 17:56:32,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:32,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956360264] [2021-10-13 17:56:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:32,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:32,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:32,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:32,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956360264] [2021-10-13 17:56:32,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956360264] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:32,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:32,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:32,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973678890] [2021-10-13 17:56:32,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:32,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:32,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:32,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:32,239 INFO L87 Difference]: Start difference. First operand 1290 states and 3886 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:32,567 INFO L93 Difference]: Finished difference Result 1348 states and 3991 transitions. [2021-10-13 17:56:32,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:32,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:32,570 INFO L225 Difference]: With dead ends: 1348 [2021-10-13 17:56:32,570 INFO L226 Difference]: Without dead ends: 1332 [2021-10-13 17:56:32,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-13 17:56:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1288. [2021-10-13 17:56:32,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 3.0155400155400156) internal successors, (3881), 1287 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 3881 transitions. [2021-10-13 17:56:32,587 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 3881 transitions. Word has length 38 [2021-10-13 17:56:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:32,588 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 3881 transitions. [2021-10-13 17:56:32,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 3881 transitions. [2021-10-13 17:56:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:32,590 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:32,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:32,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-10-13 17:56:32,590 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash -134786789, now seen corresponding path program 289 times [2021-10-13 17:56:32,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:32,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084392773] [2021-10-13 17:56:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:32,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:32,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:32,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:32,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084392773] [2021-10-13 17:56:32,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084392773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:32,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:32,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:32,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060327590] [2021-10-13 17:56:32,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:32,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:32,678 INFO L87 Difference]: Start difference. First operand 1288 states and 3881 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:32,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:32,987 INFO L93 Difference]: Finished difference Result 1364 states and 4022 transitions. [2021-10-13 17:56:32,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:32,987 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:32,989 INFO L225 Difference]: With dead ends: 1364 [2021-10-13 17:56:32,990 INFO L226 Difference]: Without dead ends: 1332 [2021-10-13 17:56:32,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:32,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-13 17:56:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1276. [2021-10-13 17:56:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 1275 states have (on average 3.0219607843137255) internal successors, (3853), 1275 states have internal predecessors, (3853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3853 transitions. [2021-10-13 17:56:33,007 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 3853 transitions. Word has length 38 [2021-10-13 17:56:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:33,007 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 3853 transitions. [2021-10-13 17:56:33,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 3853 transitions. [2021-10-13 17:56:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:33,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:33,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:33,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-10-13 17:56:33,009 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:33,009 INFO L82 PathProgramCache]: Analyzing trace with hash 58233013, now seen corresponding path program 290 times [2021-10-13 17:56:33,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:33,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012767477] [2021-10-13 17:56:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:33,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:33,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:33,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012767477] [2021-10-13 17:56:33,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012767477] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:33,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:33,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:33,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232556133] [2021-10-13 17:56:33,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:33,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:33,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:33,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:33,093 INFO L87 Difference]: Start difference. First operand 1276 states and 3853 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:33,369 INFO L93 Difference]: Finished difference Result 1312 states and 3921 transitions. [2021-10-13 17:56:33,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:33,369 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:33,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:33,373 INFO L225 Difference]: With dead ends: 1312 [2021-10-13 17:56:33,373 INFO L226 Difference]: Without dead ends: 1304 [2021-10-13 17:56:33,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 120.6ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-13 17:56:33,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1272. [2021-10-13 17:56:33,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 1271 states have (on average 3.02360346184107) internal successors, (3843), 1271 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 3843 transitions. [2021-10-13 17:56:33,391 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 3843 transitions. Word has length 38 [2021-10-13 17:56:33,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:33,391 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 3843 transitions. [2021-10-13 17:56:33,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 3843 transitions. [2021-10-13 17:56:33,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:33,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:33,393 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:33,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-10-13 17:56:33,393 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:33,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:33,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1049258553, now seen corresponding path program 291 times [2021-10-13 17:56:33,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:33,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996333856] [2021-10-13 17:56:33,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:33,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:33,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:33,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996333856] [2021-10-13 17:56:33,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996333856] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:33,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:33,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:33,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498307950] [2021-10-13 17:56:33,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:33,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:33,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:33,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:33,506 INFO L87 Difference]: Start difference. First operand 1272 states and 3843 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:33,865 INFO L93 Difference]: Finished difference Result 1310 states and 3914 transitions. [2021-10-13 17:56:33,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:33,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:33,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:33,868 INFO L225 Difference]: With dead ends: 1310 [2021-10-13 17:56:33,868 INFO L226 Difference]: Without dead ends: 1302 [2021-10-13 17:56:33,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 175.4ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-10-13 17:56:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1270. [2021-10-13 17:56:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 3.0244286840031522) internal successors, (3838), 1269 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3838 transitions. [2021-10-13 17:56:33,886 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3838 transitions. Word has length 38 [2021-10-13 17:56:33,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:33,886 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 3838 transitions. [2021-10-13 17:56:33,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3838 transitions. [2021-10-13 17:56:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:33,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:33,888 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:33,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-10-13 17:56:33,888 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:33,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:33,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2043572173, now seen corresponding path program 292 times [2021-10-13 17:56:33,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:33,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946708419] [2021-10-13 17:56:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:33,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:33,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:33,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946708419] [2021-10-13 17:56:33,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946708419] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:33,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:33,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:33,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503346532] [2021-10-13 17:56:33,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:33,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:33,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:33,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:33,999 INFO L87 Difference]: Start difference. First operand 1270 states and 3838 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:34,261 INFO L93 Difference]: Finished difference Result 1282 states and 3854 transitions. [2021-10-13 17:56:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:34,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:34,265 INFO L225 Difference]: With dead ends: 1282 [2021-10-13 17:56:34,265 INFO L226 Difference]: Without dead ends: 1264 [2021-10-13 17:56:34,265 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-13 17:56:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-13 17:56:34,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2021-10-13 17:56:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1263 states have (on average 3.0269200316706253) internal successors, (3823), 1263 states have internal predecessors, (3823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3823 transitions. [2021-10-13 17:56:34,290 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3823 transitions. Word has length 38 [2021-10-13 17:56:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:34,290 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 3823 transitions. [2021-10-13 17:56:34,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3823 transitions. [2021-10-13 17:56:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:34,293 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:34,293 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:34,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-10-13 17:56:34,293 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:34,294 INFO L82 PathProgramCache]: Analyzing trace with hash -463195237, now seen corresponding path program 293 times [2021-10-13 17:56:34,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:34,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339719558] [2021-10-13 17:56:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:34,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:34,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:34,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:34,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339719558] [2021-10-13 17:56:34,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339719558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:34,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:34,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:34,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12916011] [2021-10-13 17:56:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:34,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:34,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:34,409 INFO L87 Difference]: Start difference. First operand 1264 states and 3823 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:34,639 INFO L93 Difference]: Finished difference Result 1278 states and 3842 transitions. [2021-10-13 17:56:34,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:56:34,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:34,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:34,642 INFO L225 Difference]: With dead ends: 1278 [2021-10-13 17:56:34,642 INFO L226 Difference]: Without dead ends: 1262 [2021-10-13 17:56:34,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 121.3ms TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:56:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-13 17:56:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2021-10-13 17:56:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.027755749405234) internal successors, (3818), 1261 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3818 transitions. [2021-10-13 17:56:34,660 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3818 transitions. Word has length 38 [2021-10-13 17:56:34,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:34,660 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 3818 transitions. [2021-10-13 17:56:34,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:34,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3818 transitions. [2021-10-13 17:56:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:34,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:34,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:34,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-10-13 17:56:34,663 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:34,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:34,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1589133887, now seen corresponding path program 294 times [2021-10-13 17:56:34,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:34,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790850475] [2021-10-13 17:56:34,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:34,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:34,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:34,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790850475] [2021-10-13 17:56:34,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790850475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:34,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:34,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:34,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256953293] [2021-10-13 17:56:34,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:34,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:34,792 INFO L87 Difference]: Start difference. First operand 1262 states and 3818 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:35,176 INFO L93 Difference]: Finished difference Result 1324 states and 3938 transitions. [2021-10-13 17:56:35,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:35,177 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:35,179 INFO L225 Difference]: With dead ends: 1324 [2021-10-13 17:56:35,179 INFO L226 Difference]: Without dead ends: 1304 [2021-10-13 17:56:35,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 177.2ms TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:35,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-13 17:56:35,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1262. [2021-10-13 17:56:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1261 states have (on average 3.022997620935765) internal successors, (3812), 1261 states have internal predecessors, (3812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3812 transitions. [2021-10-13 17:56:35,199 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3812 transitions. Word has length 38 [2021-10-13 17:56:35,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:35,199 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 3812 transitions. [2021-10-13 17:56:35,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3812 transitions. [2021-10-13 17:56:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:35,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:35,205 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:35,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-10-13 17:56:35,205 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:35,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1001856043, now seen corresponding path program 295 times [2021-10-13 17:56:35,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:35,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47982683] [2021-10-13 17:56:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:35,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:35,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:35,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47982683] [2021-10-13 17:56:35,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47982683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:35,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:35,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 17:56:35,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297987] [2021-10-13 17:56:35,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:56:35,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:35,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:56:35,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-13 17:56:35,345 INFO L87 Difference]: Start difference. First operand 1262 states and 3812 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:35,664 INFO L93 Difference]: Finished difference Result 1276 states and 3835 transitions. [2021-10-13 17:56:35,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:35,664 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:35,668 INFO L225 Difference]: With dead ends: 1276 [2021-10-13 17:56:35,668 INFO L226 Difference]: Without dead ends: 1258 [2021-10-13 17:56:35,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:56:35,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-10-13 17:56:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2021-10-13 17:56:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 1255 states have (on average 3.0254980079681273) internal successors, (3797), 1255 states have internal predecessors, (3797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3797 transitions. [2021-10-13 17:56:35,691 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3797 transitions. Word has length 38 [2021-10-13 17:56:35,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:35,692 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 3797 transitions. [2021-10-13 17:56:35,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:35,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3797 transitions. [2021-10-13 17:56:35,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:35,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:35,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:35,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-10-13 17:56:35,694 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:35,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash -565980259, now seen corresponding path program 296 times [2021-10-13 17:56:35,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:35,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487094336] [2021-10-13 17:56:35,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:35,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:35,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:35,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487094336] [2021-10-13 17:56:35,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487094336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:35,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:35,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:35,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112728407] [2021-10-13 17:56:35,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:35,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:35,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:35,828 INFO L87 Difference]: Start difference. First operand 1256 states and 3797 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:36,173 INFO L93 Difference]: Finished difference Result 1270 states and 3820 transitions. [2021-10-13 17:56:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:56:36,174 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:36,176 INFO L225 Difference]: With dead ends: 1270 [2021-10-13 17:56:36,176 INFO L226 Difference]: Without dead ends: 1248 [2021-10-13 17:56:36,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:56:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-10-13 17:56:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-10-13 17:56:36,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1247 states have (on average 3.0336808340016037) internal successors, (3783), 1247 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 3783 transitions. [2021-10-13 17:56:36,194 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 3783 transitions. Word has length 38 [2021-10-13 17:56:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:36,194 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 3783 transitions. [2021-10-13 17:56:36,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 3783 transitions. [2021-10-13 17:56:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:36,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:36,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:36,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-10-13 17:56:36,196 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:36,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:36,197 INFO L82 PathProgramCache]: Analyzing trace with hash 594889713, now seen corresponding path program 297 times [2021-10-13 17:56:36,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:36,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487882646] [2021-10-13 17:56:36,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:36,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:36,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:36,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487882646] [2021-10-13 17:56:36,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487882646] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:36,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:36,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 17:56:36,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209090221] [2021-10-13 17:56:36,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:56:36,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:56:36,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:56:36,335 INFO L87 Difference]: Start difference. First operand 1248 states and 3783 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:36,580 INFO L93 Difference]: Finished difference Result 1230 states and 3742 transitions. [2021-10-13 17:56:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:56:36,580 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:36,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:36,583 INFO L225 Difference]: With dead ends: 1230 [2021-10-13 17:56:36,583 INFO L226 Difference]: Without dead ends: 1196 [2021-10-13 17:56:36,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:56:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-13 17:56:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2021-10-13 17:56:36,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 3.0853556485355647) internal successors, (3687), 1195 states have internal predecessors, (3687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 3687 transitions. [2021-10-13 17:56:36,601 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 3687 transitions. Word has length 38 [2021-10-13 17:56:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:36,601 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 3687 transitions. [2021-10-13 17:56:36,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 3687 transitions. [2021-10-13 17:56:36,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:36,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:36,603 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:36,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-10-13 17:56:36,603 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:36,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:36,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1270181275, now seen corresponding path program 298 times [2021-10-13 17:56:36,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:36,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768618029] [2021-10-13 17:56:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:36,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:36,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:36,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768618029] [2021-10-13 17:56:36,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768618029] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:36,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:36,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:56:36,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482564196] [2021-10-13 17:56:36,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 17:56:36,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:36,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 17:56:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-13 17:56:36,684 INFO L87 Difference]: Start difference. First operand 1196 states and 3687 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:36,928 INFO L93 Difference]: Finished difference Result 1510 states and 4550 transitions. [2021-10-13 17:56:36,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:56:36,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:36,931 INFO L225 Difference]: With dead ends: 1510 [2021-10-13 17:56:36,931 INFO L226 Difference]: Without dead ends: 1348 [2021-10-13 17:56:36,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-13 17:56:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-10-13 17:56:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1340. [2021-10-13 17:56:36,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1339 states have (on average 3.026138909634055) internal successors, (4052), 1339 states have internal predecessors, (4052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4052 transitions. [2021-10-13 17:56:36,955 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4052 transitions. Word has length 38 [2021-10-13 17:56:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:36,956 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 4052 transitions. [2021-10-13 17:56:36,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:36,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4052 transitions. [2021-10-13 17:56:36,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:36,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:36,959 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:36,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-10-13 17:56:36,960 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:36,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:36,960 INFO L82 PathProgramCache]: Analyzing trace with hash 327842679, now seen corresponding path program 299 times [2021-10-13 17:56:36,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:36,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505713343] [2021-10-13 17:56:36,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:36,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:37,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:37,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505713343] [2021-10-13 17:56:37,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505713343] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:37,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:37,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-13 17:56:37,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642840470] [2021-10-13 17:56:37,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 17:56:37,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 17:56:37,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:37,056 INFO L87 Difference]: Start difference. First operand 1340 states and 4052 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:37,315 INFO L93 Difference]: Finished difference Result 1586 states and 4687 transitions. [2021-10-13 17:56:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:56:37,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:37,318 INFO L225 Difference]: With dead ends: 1586 [2021-10-13 17:56:37,319 INFO L226 Difference]: Without dead ends: 1470 [2021-10-13 17:56:37,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 88.0ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 17:56:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-10-13 17:56:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1440. [2021-10-13 17:56:37,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 2.9784572619874914) internal successors, (4286), 1439 states have internal predecessors, (4286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4286 transitions. [2021-10-13 17:56:37,339 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4286 transitions. Word has length 38 [2021-10-13 17:56:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:37,339 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4286 transitions. [2021-10-13 17:56:37,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4286 transitions. [2021-10-13 17:56:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-13 17:56:37,341 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:56:37,341 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:56:37,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-10-13 17:56:37,342 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-13 17:56:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:56:37,342 INFO L82 PathProgramCache]: Analyzing trace with hash -83790857, now seen corresponding path program 300 times [2021-10-13 17:56:37,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:56:37,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777636519] [2021-10-13 17:56:37,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:56:37,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:56:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:56:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:56:37,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:56:37,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777636519] [2021-10-13 17:56:37,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777636519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:56:37,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:56:37,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 17:56:37,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449445860] [2021-10-13 17:56:37,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:56:37,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:56:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:56:37,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:56:37,469 INFO L87 Difference]: Start difference. First operand 1440 states and 4286 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:56:37,580 INFO L93 Difference]: Finished difference Result 1439 states and 4285 transitions. [2021-10-13 17:56:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 17:56:37,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-13 17:56:37,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:56:37,581 INFO L225 Difference]: With dead ends: 1439 [2021-10-13 17:56:37,581 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 17:56:37,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 63.1ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-13 17:56:37,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 17:56:37,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 17:56:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 17:56:37,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-10-13 17:56:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:56:37,582 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 17:56:37,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:56:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 17:56:37,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 17:56:37,584 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 17:56:37,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 17:56:37,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 17:56:37,586 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 17:56:37,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 17:56:37,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-10-13 17:56:37,592 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 17:56:37,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 17:56:37,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:56:37 BasicIcfg [2021-10-13 17:56:37,596 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 17:56:37,597 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 17:56:37,597 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 17:56:37,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 17:56:37,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:52:35" (3/4) ... [2021-10-13 17:56:37,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 17:56:37,611 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 17:56:37,611 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 17:56:37,612 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-13 17:56:37,612 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-13 17:56:37,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-13 17:56:37,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 17:56:37,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:56:37,621 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:56:37,659 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 17:56:37,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 17:56:37,662 INFO L168 Benchmark]: Toolchain (without parser) took 243250.84 ms. Allocated memory was 50.3 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 26.2 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 448.7 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,662 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 17:56:37,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.69 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 26.5 MB in the end (delta: -529.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.95 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,664 INFO L168 Benchmark]: Boogie Preprocessor took 66.43 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 23.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 17:56:37,664 INFO L168 Benchmark]: RCFGBuilder took 733.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 28.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,665 INFO L168 Benchmark]: TraceAbstraction took 242022.22 ms. Allocated memory was 60.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 28.1 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 435.8 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,665 INFO L168 Benchmark]: Witness Printer took 62.35 ms. Allocated memory is still 1.8 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 17:56:37,668 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory was 31.2 MB in the beginning and 31.2 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.69 ms. Allocated memory is still 50.3 MB. Free memory was 26.0 MB in the beginning and 26.5 MB in the end (delta: -529.3 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.95 ms. Allocated memory is still 50.3 MB. Free memory was 26.5 MB in the beginning and 24.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.43 ms. Allocated memory is still 50.3 MB. Free memory was 24.5 MB in the beginning and 23.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 733.34 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 28.5 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 242022.22 ms. Allocated memory was 60.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 28.1 MB in the beginning and 1.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 435.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.35 ms. Allocated memory is still 1.8 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6802.2ms, 169 PlacesBefore, 56 PlacesAfterwards, 162 TransitionsBefore, 46 TransitionsAfterwards, 3864 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 14 ConcurrentYvCompositions, 3 ChoiceCompositions, 145 TotalNumberOfCompositions, 12207 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5984, positive: 5715, positive conditional: 0, positive unconditional: 5715, negative: 269, negative conditional: 0, negative unconditional: 269, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2990, positive: 2912, positive conditional: 0, positive unconditional: 2912, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2990, positive: 2792, positive conditional: 0, positive unconditional: 2792, negative: 198, negative conditional: 0, negative unconditional: 198, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 198, positive: 120, positive conditional: 0, positive unconditional: 120, negative: 78, negative conditional: 0, negative unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 222, positive: 91, positive conditional: 0, positive unconditional: 91, negative: 130, negative conditional: 0, negative unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5984, positive: 2803, positive conditional: 0, positive unconditional: 2803, negative: 191, negative conditional: 0, negative unconditional: 191, unknown: 2990, unknown conditional: 0, unknown unconditional: 2990] , Statistics on independence cache: Total cache size (in pairs): 371, Positive cache size: 339, Positive conditional cache size: 0, Positive unconditional cache size: 339, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 120]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 214 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 241846.2ms, OverallIterations: 301, TraceHistogramMax: 1, EmptinessCheckTime: 1777.6ms, AutomataDifference: 177612.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7113.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29348 SDtfs, 42922 SDslu, 166386 SDs, 0 SdLazy, 166182 SolverSat, 10970 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 89998.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7649 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 7063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35970 ImplicationChecksByTransitivity, 63723.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6226occurred in iteration=11, InterpolantAutomatonStates: 6692, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20278.9ms AutomataMinimizationTime, 301 MinimizatonAttempts, 278748 StatesRemovedByMinimization, 293 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 508.4ms SsaConstructionTime, 5915.0ms SatisfiabilityAnalysisTime, 26499.8ms InterpolantComputationTime, 11425 NumberOfCodeBlocks, 11425 NumberOfCodeBlocksAsserted, 301 NumberOfCheckSat, 11124 ConstructedInterpolants, 0 QuantifiedInterpolants, 51779 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 301 InterpolantComputations, 301 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 17:56:37,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...