./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 8c2bbc92 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 8119fc778075480b7914c3ec138cbab8bd41a9dd 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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-8c2bbc9 [2021-10-08 14:39:13,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 14:39:13,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 14:39:13,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-08 14:39:13,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-08 14:39:13,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-08 14:39:13,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-08 14:39:13,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-08 14:39:13,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-08 14:39:13,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-08 14:39:13,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-08 14:39:13,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-08 14:39:13,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 14:39:13,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 14:39:13,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 14:39:13,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 14:39:13,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 14:39:13,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 14:39:13,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 14:39:13,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 14:39:13,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 14:39:13,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 14:39:13,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 14:39:13,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 14:39:13,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-08 14:39:13,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-08 14:39:13,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-08 14:39:13,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-08 14:39:13,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-08 14:39:13,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-08 14:39:13,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 14:39:13,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 14:39:13,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 14:39:13,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 14:39:13,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 14:39:13,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 14:39:13,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 14:39:13,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 14:39:13,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 14:39:13,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 14:39:13,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 14:39:13,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-08 14:39:14,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 14:39:14,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 14:39:14,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 14:39:14,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 14:39:14,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 14:39:14,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 14:39:14,052 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 14:39:14,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 14:39:14,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 14:39:14,053 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 14:39:14,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 14:39:14,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 14:39:14,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-08 14:39:14,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 14:39:14,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-08 14:39:14,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 14:39:14,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-08 14:39:14,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 14:39:14,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-08 14:39:14,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 14:39:14,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 14:39:14,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 14:39:14,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:39:14,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 14:39:14,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 14:39:14,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-08 14:39:14,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-08 14:39:14,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-08 14:39:14,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-08 14:39:14,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 14:39:14,060 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8119fc778075480b7914c3ec138cbab8bd41a9dd [2021-10-08 14:39:14,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 14:39:14,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 14:39:14,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 14:39:14,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 14:39:14,510 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 14:39:14,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-08 14:39:14,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d0026a/39191ce1c3294193893182795693f07d/FLAGdd69ea390 [2021-10-08 14:39:15,284 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 14:39:15,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2021-10-08 14:39:15,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d0026a/39191ce1c3294193893182795693f07d/FLAGdd69ea390 [2021-10-08 14:39:15,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/074d0026a/39191ce1c3294193893182795693f07d [2021-10-08 14:39:15,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 14:39:15,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-08 14:39:15,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 14:39:15,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 14:39:15,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 14:39:15,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:15,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115749c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15, skipping insertion in model container [2021-10-08 14:39:15,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:15,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 14:39:15,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 14:39:15,890 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[2789,2802] [2021-10-08 14:39:15,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:39:15,910 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 14:39:15,941 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[2789,2802] [2021-10-08 14:39:15,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 14:39:15,961 INFO L208 MainTranslator]: Completed translation [2021-10-08 14:39:15,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15 WrapperNode [2021-10-08 14:39:15,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 14:39:15,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 14:39:15,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 14:39:15,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 14:39:15,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:15,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 14:39:16,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 14:39:16,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 14:39:16,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 14:39:16,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 14:39:16,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 14:39:16,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 14:39:16,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 14:39:16,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (1/1) ... [2021-10-08 14:39:16,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 14:39:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 14:39:16,090 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) [2021-10-08 14:39:16,110 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 [2021-10-08 14:39:16,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 14:39:16,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 14:39:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 14:39:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 14:39:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 14:39:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 14:39:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-08 14:39:16,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-08 14:39:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-08 14:39:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 14:39:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-08 14:39:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 14:39:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 14:39:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 14:39:16,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 14:39:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-08 14:39:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 14:39:16,168 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 14:39:16,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 14:39:16,795 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-08 14:39:16,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:39:16 BoogieIcfgContainer [2021-10-08 14:39:16,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 14:39:16,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 14:39:16,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 14:39:16,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 14:39:16,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 02:39:15" (1/3) ... [2021-10-08 14:39:16,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf2b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:39:16, skipping insertion in model container [2021-10-08 14:39:16,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 02:39:15" (2/3) ... [2021-10-08 14:39:16,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf2b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 02:39:16, skipping insertion in model container [2021-10-08 14:39:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:39:16" (3/3) ... [2021-10-08 14:39:16,811 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2021-10-08 14:39:16,818 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-08 14:39:16,818 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 14:39:16,818 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-08 14:39:16,819 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 14:39:16,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,860 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,861 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,861 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,861 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,862 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,862 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,862 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,862 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,863 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,864 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,864 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,864 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,865 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,865 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,865 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,866 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,867 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,867 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,868 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,868 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,868 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,869 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,869 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,870 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,870 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,870 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,870 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,871 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,871 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,871 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,872 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,873 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,873 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,873 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,874 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,875 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,876 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,876 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,877 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,877 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,877 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,878 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,878 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,878 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,879 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,879 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,879 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,880 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,881 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,881 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,881 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,882 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,882 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,882 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,883 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,884 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,884 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,884 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,885 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,885 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,886 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,886 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,886 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,887 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,887 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,887 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,888 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,888 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,888 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,888 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,889 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,889 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,889 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,893 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,894 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,895 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,895 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,897 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,898 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,898 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,901 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,901 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,901 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,901 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,902 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,902 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,904 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,905 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,905 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,906 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 14:39:16,934 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-08 14:39:16,992 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 14:39:17,001 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 [2021-10-08 14:39:17,001 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-08 14:39:17,021 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 14:39:17,034 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 162 transitions, 356 flow [2021-10-08 14:39:17,038 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 162 transitions, 356 flow [2021-10-08 14:39:17,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 169 places, 162 transitions, 356 flow [2021-10-08 14:39:17,135 INFO L129 PetriNetUnfolder]: 6/158 cut-off events. [2021-10-08 14:39:17,135 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-08 14:39:17,142 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. [2021-10-08 14:39:17,149 INFO L116 LiptonReduction]: Number of co-enabled transitions 3864 [2021-10-08 14:39:23,978 INFO L131 LiptonReduction]: Checked pairs total: 12207 [2021-10-08 14:39:23,978 INFO L133 LiptonReduction]: Total number of compositions: 145 [2021-10-08 14:39:23,987 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 46 transitions, 124 flow [2021-10-08 14:39:24,237 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) [2021-10-08 14:39:24,259 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) [2021-10-08 14:39:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 14:39:24,305 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:24,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:24,307 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)] === [2021-10-08 14:39:24,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:24,313 INFO L82 PathProgramCache]: Analyzing trace with hash 411533357, now seen corresponding path program 1 times [2021-10-08 14:39:24,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:24,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145731881] [2021-10-08 14:39:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:24,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:24,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:24,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145731881] [2021-10-08 14:39:24,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145731881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:24,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:24,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-08 14:39:24,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091581604] [2021-10-08 14:39:24,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 14:39:24,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:24,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 14:39:24,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 14:39:24,640 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) [2021-10-08 14:39:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:24,783 INFO L93 Difference]: Finished difference Result 4146 states and 15422 transitions. [2021-10-08 14:39:24,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 14:39:24,784 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 [2021-10-08 14:39:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:24,865 INFO L225 Difference]: With dead ends: 4146 [2021-10-08 14:39:24,865 INFO L226 Difference]: Without dead ends: 4146 [2021-10-08 14:39:24,867 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 [2021-10-08 14:39:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2021-10-08 14:39:25,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4146. [2021-10-08 14:39:25,245 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) [2021-10-08 14:39:25,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 15422 transitions. [2021-10-08 14:39:25,300 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 15422 transitions. Word has length 25 [2021-10-08 14:39:25,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:25,302 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 15422 transitions. [2021-10-08 14:39:25,303 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) [2021-10-08 14:39:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 15422 transitions. [2021-10-08 14:39:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:25,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:25,334 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:25,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-08 14:39:25,335 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)] === [2021-10-08 14:39:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1000026437, now seen corresponding path program 1 times [2021-10-08 14:39:25,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:25,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979851461] [2021-10-08 14:39:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:25,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:25,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:25,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979851461] [2021-10-08 14:39:25,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979851461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:25,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:25,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:39:25,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673188181] [2021-10-08 14:39:25,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:39:25,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:39:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:39:25,729 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) [2021-10-08 14:39:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:26,566 INFO L93 Difference]: Finished difference Result 7808 states and 26778 transitions. [2021-10-08 14:39:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:39:26,567 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 [2021-10-08 14:39:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:26,645 INFO L225 Difference]: With dead ends: 7808 [2021-10-08 14:39:26,646 INFO L226 Difference]: Without dead ends: 7808 [2021-10-08 14:39:26,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 239.7ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:39:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7808 states. [2021-10-08 14:39:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7808 to 4742. [2021-10-08 14:39:27,084 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) [2021-10-08 14:39:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4742 states to 4742 states and 17261 transitions. [2021-10-08 14:39:27,128 INFO L78 Accepts]: Start accepts. Automaton has 4742 states and 17261 transitions. Word has length 38 [2021-10-08 14:39:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:27,132 INFO L470 AbstractCegarLoop]: Abstraction has 4742 states and 17261 transitions. [2021-10-08 14:39:27,132 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) [2021-10-08 14:39:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 4742 states and 17261 transitions. [2021-10-08 14:39:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:27,158 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:27,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:27,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-08 14:39:27,161 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)] === [2021-10-08 14:39:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:27,172 INFO L82 PathProgramCache]: Analyzing trace with hash 518717173, now seen corresponding path program 2 times [2021-10-08 14:39:27,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:27,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629891567] [2021-10-08 14:39:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:27,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:27,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:27,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629891567] [2021-10-08 14:39:27,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629891567] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:27,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:27,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 14:39:27,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644381316] [2021-10-08 14:39:27,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 14:39:27,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:27,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 14:39:27,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:39:27,624 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) [2021-10-08 14:39:28,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:28,026 INFO L93 Difference]: Finished difference Result 7191 states and 25098 transitions. [2021-10-08 14:39:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 14:39:28,027 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 [2021-10-08 14:39:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:28,077 INFO L225 Difference]: With dead ends: 7191 [2021-10-08 14:39:28,077 INFO L226 Difference]: Without dead ends: 6064 [2021-10-08 14:39:28,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 117.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:28,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2021-10-08 14:39:28,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 5834. [2021-10-08 14:39:28,386 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) [2021-10-08 14:39:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 20775 transitions. [2021-10-08 14:39:28,474 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 20775 transitions. Word has length 38 [2021-10-08 14:39:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:28,475 INFO L470 AbstractCegarLoop]: Abstraction has 5834 states and 20775 transitions. [2021-10-08 14:39:28,475 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) [2021-10-08 14:39:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 20775 transitions. [2021-10-08 14:39:28,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:28,621 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:28,621 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] [2021-10-08 14:39:28,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-08 14:39:28,621 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)] === [2021-10-08 14:39:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash -225624279, now seen corresponding path program 3 times [2021-10-08 14:39:28,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:28,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885561995] [2021-10-08 14:39:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:28,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:28,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:28,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885561995] [2021-10-08 14:39:28,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885561995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:28,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:28,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:28,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014270469] [2021-10-08 14:39:28,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:28,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:28,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:28,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:28,919 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) [2021-10-08 14:39:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:30,205 INFO L93 Difference]: Finished difference Result 9622 states and 30061 transitions. [2021-10-08 14:39:30,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 14:39:30,206 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 [2021-10-08 14:39:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:30,254 INFO L225 Difference]: With dead ends: 9622 [2021-10-08 14:39:30,254 INFO L226 Difference]: Without dead ends: 8112 [2021-10-08 14:39:30,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 384.5ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 14:39:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8112 states. [2021-10-08 14:39:30,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8112 to 5450. [2021-10-08 14:39:30,510 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) [2021-10-08 14:39:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 17791 transitions. [2021-10-08 14:39:30,541 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 17791 transitions. Word has length 38 [2021-10-08 14:39:30,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:30,542 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 17791 transitions. [2021-10-08 14:39:30,542 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) [2021-10-08 14:39:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 17791 transitions. [2021-10-08 14:39:30,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:30,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:30,566 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] [2021-10-08 14:39:30,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-08 14:39:30,567 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)] === [2021-10-08 14:39:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:30,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1662400279, now seen corresponding path program 4 times [2021-10-08 14:39:30,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:30,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957739740] [2021-10-08 14:39:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:30,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:30,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:30,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957739740] [2021-10-08 14:39:30,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957739740] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:30,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:30,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:30,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459896883] [2021-10-08 14:39:30,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:30,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:30,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:30,765 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) [2021-10-08 14:39:31,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:31,655 INFO L93 Difference]: Finished difference Result 9460 states and 29762 transitions. [2021-10-08 14:39:31,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:39:31,655 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 [2021-10-08 14:39:31,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:31,702 INFO L225 Difference]: With dead ends: 9460 [2021-10-08 14:39:31,702 INFO L226 Difference]: Without dead ends: 9442 [2021-10-08 14:39:31,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 310.8ms TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:39:31,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9442 states. [2021-10-08 14:39:32,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9442 to 5584. [2021-10-08 14:39:32,064 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) [2021-10-08 14:39:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 18264 transitions. [2021-10-08 14:39:32,090 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 18264 transitions. Word has length 38 [2021-10-08 14:39:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:32,091 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 18264 transitions. [2021-10-08 14:39:32,091 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) [2021-10-08 14:39:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 18264 transitions. [2021-10-08 14:39:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:32,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:32,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:32,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-08 14:39:32,114 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)] === [2021-10-08 14:39:32,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:32,114 INFO L82 PathProgramCache]: Analyzing trace with hash -172286121, now seen corresponding path program 5 times [2021-10-08 14:39:32,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:32,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545928099] [2021-10-08 14:39:32,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:32,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:32,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:32,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545928099] [2021-10-08 14:39:32,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545928099] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:32,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:32,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:32,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632920125] [2021-10-08 14:39:32,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:32,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:32,295 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) [2021-10-08 14:39:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:33,460 INFO L93 Difference]: Finished difference Result 9916 states and 30971 transitions. [2021-10-08 14:39:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 14:39:33,461 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 [2021-10-08 14:39:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:33,515 INFO L225 Difference]: With dead ends: 9916 [2021-10-08 14:39:33,516 INFO L226 Difference]: Without dead ends: 9898 [2021-10-08 14:39:33,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 401.2ms TimeCoverageRelationStatistics Valid=500, Invalid=1570, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 14:39:33,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9898 states. [2021-10-08 14:39:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9898 to 5704. [2021-10-08 14:39:33,757 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) [2021-10-08 14:39:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 18617 transitions. [2021-10-08 14:39:33,786 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 18617 transitions. Word has length 38 [2021-10-08 14:39:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:33,788 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 18617 transitions. [2021-10-08 14:39:33,788 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) [2021-10-08 14:39:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 18617 transitions. [2021-10-08 14:39:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:33,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:33,813 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] [2021-10-08 14:39:33,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-08 14:39:33,814 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)] === [2021-10-08 14:39:33,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:33,815 INFO L82 PathProgramCache]: Analyzing trace with hash -834292741, now seen corresponding path program 6 times [2021-10-08 14:39:33,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:33,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313559356] [2021-10-08 14:39:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:33,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:34,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:34,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:34,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313559356] [2021-10-08 14:39:34,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313559356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:34,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:34,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:34,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656954242] [2021-10-08 14:39:34,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:34,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:34,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:34,070 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) [2021-10-08 14:39:35,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:35,272 INFO L93 Difference]: Finished difference Result 9772 states and 30506 transitions. [2021-10-08 14:39:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 14:39:35,273 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 [2021-10-08 14:39:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:35,317 INFO L225 Difference]: With dead ends: 9772 [2021-10-08 14:39:35,318 INFO L226 Difference]: Without dead ends: 9496 [2021-10-08 14:39:35,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 375.4ms TimeCoverageRelationStatistics Valid=385, Invalid=1421, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 14:39:35,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9496 states. [2021-10-08 14:39:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9496 to 5872. [2021-10-08 14:39:35,556 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) [2021-10-08 14:39:35,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 19220 transitions. [2021-10-08 14:39:35,585 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 19220 transitions. Word has length 38 [2021-10-08 14:39:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:35,585 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 19220 transitions. [2021-10-08 14:39:35,586 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) [2021-10-08 14:39:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 19220 transitions. [2021-10-08 14:39:35,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:35,607 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:35,608 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] [2021-10-08 14:39:35,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-08 14:39:35,608 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)] === [2021-10-08 14:39:35,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:35,609 INFO L82 PathProgramCache]: Analyzing trace with hash -418322777, now seen corresponding path program 7 times [2021-10-08 14:39:35,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:35,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775272578] [2021-10-08 14:39:35,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:35,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:35,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:35,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775272578] [2021-10-08 14:39:35,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775272578] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:35,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:35,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:35,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651260393] [2021-10-08 14:39:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:35,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:35,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:35,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:35,791 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) [2021-10-08 14:39:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:37,406 INFO L93 Difference]: Finished difference Result 10116 states and 31464 transitions. [2021-10-08 14:39:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 14:39:37,407 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 [2021-10-08 14:39:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:37,456 INFO L225 Difference]: With dead ends: 10116 [2021-10-08 14:39:37,456 INFO L226 Difference]: Without dead ends: 9838 [2021-10-08 14:39:37,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 727 ImplicationChecksByTransitivity, 543.9ms TimeCoverageRelationStatistics Valid=540, Invalid=2112, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 14:39:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9838 states. [2021-10-08 14:39:37,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9838 to 5976. [2021-10-08 14:39:37,738 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) [2021-10-08 14:39:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5976 states to 5976 states and 19559 transitions. [2021-10-08 14:39:37,772 INFO L78 Accepts]: Start accepts. Automaton has 5976 states and 19559 transitions. Word has length 38 [2021-10-08 14:39:37,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:37,773 INFO L470 AbstractCegarLoop]: Abstraction has 5976 states and 19559 transitions. [2021-10-08 14:39:37,773 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) [2021-10-08 14:39:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 5976 states and 19559 transitions. [2021-10-08 14:39:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:37,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:37,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:37,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-08 14:39:37,798 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)] === [2021-10-08 14:39:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:37,799 INFO L82 PathProgramCache]: Analyzing trace with hash 794666965, now seen corresponding path program 8 times [2021-10-08 14:39:37,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:37,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896857176] [2021-10-08 14:39:37,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:37,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:37,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:37,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896857176] [2021-10-08 14:39:37,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896857176] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:37,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:37,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324160727] [2021-10-08 14:39:37,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:37,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:37,952 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) [2021-10-08 14:39:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:38,723 INFO L93 Difference]: Finished difference Result 9988 states and 30909 transitions. [2021-10-08 14:39:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:39:38,724 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 [2021-10-08 14:39:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:38,763 INFO L225 Difference]: With dead ends: 9988 [2021-10-08 14:39:38,763 INFO L226 Difference]: Without dead ends: 9970 [2021-10-08 14:39:38,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 277.1ms TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2021-10-08 14:39:38,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9970 states. [2021-10-08 14:39:39,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9970 to 5988. [2021-10-08 14:39:39,028 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) [2021-10-08 14:39:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5988 states to 5988 states and 19528 transitions. [2021-10-08 14:39:39,144 INFO L78 Accepts]: Start accepts. Automaton has 5988 states and 19528 transitions. Word has length 38 [2021-10-08 14:39:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:39,144 INFO L470 AbstractCegarLoop]: Abstraction has 5988 states and 19528 transitions. [2021-10-08 14:39:39,145 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) [2021-10-08 14:39:39,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5988 states and 19528 transitions. [2021-10-08 14:39:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:39,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:39,165 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:39,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-08 14:39:39,166 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)] === [2021-10-08 14:39:39,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:39,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1040019435, now seen corresponding path program 9 times [2021-10-08 14:39:39,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:39,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809383536] [2021-10-08 14:39:39,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:39,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:39,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:39,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:39,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809383536] [2021-10-08 14:39:39,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809383536] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:39,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:39,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:39,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414575034] [2021-10-08 14:39:39,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:39,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:39,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:39,318 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) [2021-10-08 14:39:40,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:40,291 INFO L93 Difference]: Finished difference Result 10560 states and 32333 transitions. [2021-10-08 14:39:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 14:39:40,291 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 [2021-10-08 14:39:40,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:40,318 INFO L225 Difference]: With dead ends: 10560 [2021-10-08 14:39:40,318 INFO L226 Difference]: Without dead ends: 10534 [2021-10-08 14:39:40,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 395.5ms TimeCoverageRelationStatistics Valid=416, Invalid=1306, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 14:39:40,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10534 states. [2021-10-08 14:39:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10534 to 5842. [2021-10-08 14:39:40,540 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) [2021-10-08 14:39:40,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 19062 transitions. [2021-10-08 14:39:40,565 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 19062 transitions. Word has length 38 [2021-10-08 14:39:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:40,565 INFO L470 AbstractCegarLoop]: Abstraction has 5842 states and 19062 transitions. [2021-10-08 14:39:40,565 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) [2021-10-08 14:39:40,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 19062 transitions. [2021-10-08 14:39:40,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:40,584 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:40,584 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:40,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-08 14:39:40,584 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)] === [2021-10-08 14:39:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:40,585 INFO L82 PathProgramCache]: Analyzing trace with hash -2034333055, now seen corresponding path program 10 times [2021-10-08 14:39:40,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:40,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182125925] [2021-10-08 14:39:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:40,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:40,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:40,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:40,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182125925] [2021-10-08 14:39:40,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182125925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:40,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:40,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:40,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202245346] [2021-10-08 14:39:40,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:40,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:40,697 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) [2021-10-08 14:39:41,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:41,475 INFO L93 Difference]: Finished difference Result 8716 states and 27192 transitions. [2021-10-08 14:39:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:39:41,476 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 [2021-10-08 14:39:41,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:41,509 INFO L225 Difference]: With dead ends: 8716 [2021-10-08 14:39:41,509 INFO L226 Difference]: Without dead ends: 8680 [2021-10-08 14:39:41,510 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 280.4ms TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:39:41,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8680 states. [2021-10-08 14:39:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8680 to 6226. [2021-10-08 14:39:41,735 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) [2021-10-08 14:39:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 20249 transitions. [2021-10-08 14:39:41,768 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 20249 transitions. Word has length 38 [2021-10-08 14:39:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:41,769 INFO L470 AbstractCegarLoop]: Abstraction has 6226 states and 20249 transitions. [2021-10-08 14:39:41,769 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) [2021-10-08 14:39:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 20249 transitions. [2021-10-08 14:39:41,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:41,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:41,792 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] [2021-10-08 14:39:41,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-08 14:39:41,793 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)] === [2021-10-08 14:39:41,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:41,794 INFO L82 PathProgramCache]: Analyzing trace with hash -739227799, now seen corresponding path program 11 times [2021-10-08 14:39:41,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:41,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108737812] [2021-10-08 14:39:41,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:41,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:41,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:41,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108737812] [2021-10-08 14:39:41,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108737812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:41,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:41,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:41,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669283323] [2021-10-08 14:39:41,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:41,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:41,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:41,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:41,952 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) [2021-10-08 14:39:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:42,991 INFO L93 Difference]: Finished difference Result 10282 states and 31577 transitions. [2021-10-08 14:39:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 14:39:42,992 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 [2021-10-08 14:39:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:43,021 INFO L225 Difference]: With dead ends: 10282 [2021-10-08 14:39:43,021 INFO L226 Difference]: Without dead ends: 9972 [2021-10-08 14:39:43,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 347.7ms TimeCoverageRelationStatistics Valid=280, Invalid=980, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 14:39:43,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9972 states. [2021-10-08 14:39:43,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9972 to 6216. [2021-10-08 14:39:43,268 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) [2021-10-08 14:39:43,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 20186 transitions. [2021-10-08 14:39:43,296 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 20186 transitions. Word has length 38 [2021-10-08 14:39:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:43,296 INFO L470 AbstractCegarLoop]: Abstraction has 6216 states and 20186 transitions. [2021-10-08 14:39:43,296 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) [2021-10-08 14:39:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 20186 transitions. [2021-10-08 14:39:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:43,314 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:43,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:43,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-08 14:39:43,315 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)] === [2021-10-08 14:39:43,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:43,316 INFO L82 PathProgramCache]: Analyzing trace with hash -323257835, now seen corresponding path program 12 times [2021-10-08 14:39:43,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:43,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834183664] [2021-10-08 14:39:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:43,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:43,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:43,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834183664] [2021-10-08 14:39:43,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834183664] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:43,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:43,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:43,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908454391] [2021-10-08 14:39:43,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:43,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:43,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:43,483 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) [2021-10-08 14:39:45,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:45,036 INFO L93 Difference]: Finished difference Result 11038 states and 33631 transitions. [2021-10-08 14:39:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 14:39:45,037 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 [2021-10-08 14:39:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:45,070 INFO L225 Difference]: With dead ends: 11038 [2021-10-08 14:39:45,071 INFO L226 Difference]: Without dead ends: 10654 [2021-10-08 14:39:45,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 621.5ms TimeCoverageRelationStatistics Valid=487, Invalid=1963, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 14:39:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2021-10-08 14:39:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 5998. [2021-10-08 14:39:45,292 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) [2021-10-08 14:39:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 19419 transitions. [2021-10-08 14:39:45,317 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 19419 transitions. Word has length 38 [2021-10-08 14:39:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:45,317 INFO L470 AbstractCegarLoop]: Abstraction has 5998 states and 19419 transitions. [2021-10-08 14:39:45,318 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) [2021-10-08 14:39:45,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 19419 transitions. [2021-10-08 14:39:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:45,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:45,333 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] [2021-10-08 14:39:45,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-08 14:39:45,334 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)] === [2021-10-08 14:39:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:45,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1071534799, now seen corresponding path program 13 times [2021-10-08 14:39:45,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:45,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130287616] [2021-10-08 14:39:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:45,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:45,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:45,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130287616] [2021-10-08 14:39:45,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130287616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:45,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:45,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:45,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998776311] [2021-10-08 14:39:45,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:45,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:45,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:45,503 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) [2021-10-08 14:39:46,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:46,464 INFO L93 Difference]: Finished difference Result 9106 states and 28134 transitions. [2021-10-08 14:39:46,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:39:46,464 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 [2021-10-08 14:39:46,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:46,491 INFO L225 Difference]: With dead ends: 9106 [2021-10-08 14:39:46,492 INFO L226 Difference]: Without dead ends: 8730 [2021-10-08 14:39:46,492 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 351.8ms TimeCoverageRelationStatistics Valid=272, Invalid=1060, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:39:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8730 states. [2021-10-08 14:39:46,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8730 to 6168. [2021-10-08 14:39:46,666 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) [2021-10-08 14:39:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6168 states to 6168 states and 20053 transitions. [2021-10-08 14:39:46,693 INFO L78 Accepts]: Start accepts. Automaton has 6168 states and 20053 transitions. Word has length 38 [2021-10-08 14:39:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:46,694 INFO L470 AbstractCegarLoop]: Abstraction has 6168 states and 20053 transitions. [2021-10-08 14:39:46,694 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) [2021-10-08 14:39:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6168 states and 20053 transitions. [2021-10-08 14:39:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:46,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:46,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:46,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-08 14:39:46,712 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)] === [2021-10-08 14:39:46,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:46,713 INFO L82 PathProgramCache]: Analyzing trace with hash -2013932553, now seen corresponding path program 14 times [2021-10-08 14:39:46,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:46,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159586812] [2021-10-08 14:39:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:46,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:46,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:46,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159586812] [2021-10-08 14:39:46,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159586812] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:46,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:46,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:39:46,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23710012] [2021-10-08 14:39:46,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:39:46,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:46,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:39:46,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:39:46,812 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) [2021-10-08 14:39:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:47,291 INFO L93 Difference]: Finished difference Result 6700 states and 19940 transitions. [2021-10-08 14:39:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:39:47,291 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 [2021-10-08 14:39:47,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:47,310 INFO L225 Difference]: With dead ends: 6700 [2021-10-08 14:39:47,311 INFO L226 Difference]: Without dead ends: 5552 [2021-10-08 14:39:47,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 138.0ms TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:39:47,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-10-08 14:39:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 4230. [2021-10-08 14:39:47,433 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) [2021-10-08 14:39:47,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 12992 transitions. [2021-10-08 14:39:47,451 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 12992 transitions. Word has length 38 [2021-10-08 14:39:47,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:47,451 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 12992 transitions. [2021-10-08 14:39:47,452 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) [2021-10-08 14:39:47,452 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 12992 transitions. [2021-10-08 14:39:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:47,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:47,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:47,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-08 14:39:47,464 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)] === [2021-10-08 14:39:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:47,464 INFO L82 PathProgramCache]: Analyzing trace with hash -718039093, now seen corresponding path program 15 times [2021-10-08 14:39:47,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:47,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301650022] [2021-10-08 14:39:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:47,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:47,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:47,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301650022] [2021-10-08 14:39:47,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301650022] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:47,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:47,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:47,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301152077] [2021-10-08 14:39:47,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:47,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:47,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:47,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:47,582 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) [2021-10-08 14:39:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:48,201 INFO L93 Difference]: Finished difference Result 5750 states and 17160 transitions. [2021-10-08 14:39:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 14:39:48,201 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 [2021-10-08 14:39:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:48,222 INFO L225 Difference]: With dead ends: 5750 [2021-10-08 14:39:48,222 INFO L226 Difference]: Without dead ends: 5736 [2021-10-08 14:39:48,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 227.4ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:39:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2021-10-08 14:39:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4364. [2021-10-08 14:39:48,346 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) [2021-10-08 14:39:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4364 states to 4364 states and 13359 transitions. [2021-10-08 14:39:48,366 INFO L78 Accepts]: Start accepts. Automaton has 4364 states and 13359 transitions. Word has length 38 [2021-10-08 14:39:48,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:48,366 INFO L470 AbstractCegarLoop]: Abstraction has 4364 states and 13359 transitions. [2021-10-08 14:39:48,366 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) [2021-10-08 14:39:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4364 states and 13359 transitions. [2021-10-08 14:39:48,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:48,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:48,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:48,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-08 14:39:48,380 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)] === [2021-10-08 14:39:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:48,380 INFO L82 PathProgramCache]: Analyzing trace with hash -210974729, now seen corresponding path program 16 times [2021-10-08 14:39:48,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:48,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263102658] [2021-10-08 14:39:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:48,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:48,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:48,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263102658] [2021-10-08 14:39:48,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263102658] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:48,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:48,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:48,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83070356] [2021-10-08 14:39:48,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:48,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:48,503 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) [2021-10-08 14:39:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:49,061 INFO L93 Difference]: Finished difference Result 6542 states and 19753 transitions. [2021-10-08 14:39:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:39:49,062 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 [2021-10-08 14:39:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:49,114 INFO L225 Difference]: With dead ends: 6542 [2021-10-08 14:39:49,114 INFO L226 Difference]: Without dead ends: 6530 [2021-10-08 14:39:49,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:39:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2021-10-08 14:39:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 4458. [2021-10-08 14:39:49,211 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) [2021-10-08 14:39:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4458 states to 4458 states and 13684 transitions. [2021-10-08 14:39:49,228 INFO L78 Accepts]: Start accepts. Automaton has 4458 states and 13684 transitions. Word has length 38 [2021-10-08 14:39:49,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:49,228 INFO L470 AbstractCegarLoop]: Abstraction has 4458 states and 13684 transitions. [2021-10-08 14:39:49,228 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) [2021-10-08 14:39:49,229 INFO L276 IsEmpty]: Start isEmpty. Operand 4458 states and 13684 transitions. [2021-10-08 14:39:49,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:49,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:49,240 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:49,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-08 14:39:49,240 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)] === [2021-10-08 14:39:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:49,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1281788565, now seen corresponding path program 17 times [2021-10-08 14:39:49,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:49,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29883011] [2021-10-08 14:39:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:49,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:49,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:49,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:49,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29883011] [2021-10-08 14:39:49,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29883011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:49,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:49,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:49,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657024755] [2021-10-08 14:39:49,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:49,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:49,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:49,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:49,355 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) [2021-10-08 14:39:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:50,136 INFO L93 Difference]: Finished difference Result 6910 states and 20708 transitions. [2021-10-08 14:39:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:39:50,136 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 [2021-10-08 14:39:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:50,154 INFO L225 Difference]: With dead ends: 6910 [2021-10-08 14:39:50,154 INFO L226 Difference]: Without dead ends: 6894 [2021-10-08 14:39:50,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 261.4ms TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:39:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6894 states. [2021-10-08 14:39:50,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6894 to 4462. [2021-10-08 14:39:50,287 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) [2021-10-08 14:39:50,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4462 states to 4462 states and 13698 transitions. [2021-10-08 14:39:50,299 INFO L78 Accepts]: Start accepts. Automaton has 4462 states and 13698 transitions. Word has length 38 [2021-10-08 14:39:50,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:50,299 INFO L470 AbstractCegarLoop]: Abstraction has 4462 states and 13698 transitions. [2021-10-08 14:39:50,299 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) [2021-10-08 14:39:50,299 INFO L276 IsEmpty]: Start isEmpty. Operand 4462 states and 13698 transitions. [2021-10-08 14:39:50,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:50,310 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:50,310 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] [2021-10-08 14:39:50,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-08 14:39:50,310 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)] === [2021-10-08 14:39:50,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:50,311 INFO L82 PathProgramCache]: Analyzing trace with hash -810556433, now seen corresponding path program 18 times [2021-10-08 14:39:50,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:50,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890906] [2021-10-08 14:39:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:50,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:50,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:50,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890906] [2021-10-08 14:39:50,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890906] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:50,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:50,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886476540] [2021-10-08 14:39:50,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:50,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:50,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:50,440 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) [2021-10-08 14:39:51,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:51,310 INFO L93 Difference]: Finished difference Result 6368 states and 18888 transitions. [2021-10-08 14:39:51,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 14:39:51,311 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 [2021-10-08 14:39:51,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:51,323 INFO L225 Difference]: With dead ends: 6368 [2021-10-08 14:39:51,324 INFO L226 Difference]: Without dead ends: 6176 [2021-10-08 14:39:51,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 291.9ms TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:39:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-10-08 14:39:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 4614. [2021-10-08 14:39:51,411 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) [2021-10-08 14:39:51,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 14109 transitions. [2021-10-08 14:39:51,427 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 14109 transitions. Word has length 38 [2021-10-08 14:39:51,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:51,427 INFO L470 AbstractCegarLoop]: Abstraction has 4614 states and 14109 transitions. [2021-10-08 14:39:51,428 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) [2021-10-08 14:39:51,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 14109 transitions. [2021-10-08 14:39:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:51,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:51,438 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] [2021-10-08 14:39:51,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-08 14:39:51,439 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)] === [2021-10-08 14:39:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:51,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1790948853, now seen corresponding path program 19 times [2021-10-08 14:39:51,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:51,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386761518] [2021-10-08 14:39:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:51,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:51,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:51,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386761518] [2021-10-08 14:39:51,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386761518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:51,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:51,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:51,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759446847] [2021-10-08 14:39:51,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:51,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:51,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:51,552 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) [2021-10-08 14:39:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:52,291 INFO L93 Difference]: Finished difference Result 6814 states and 20420 transitions. [2021-10-08 14:39:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:39:52,291 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 [2021-10-08 14:39:52,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:52,307 INFO L225 Difference]: With dead ends: 6814 [2021-10-08 14:39:52,307 INFO L226 Difference]: Without dead ends: 6640 [2021-10-08 14:39:52,308 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 245.6ms TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:39:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6640 states. [2021-10-08 14:39:52,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6640 to 4690. [2021-10-08 14:39:52,392 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) [2021-10-08 14:39:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 14366 transitions. [2021-10-08 14:39:52,409 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 14366 transitions. Word has length 38 [2021-10-08 14:39:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:52,409 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 14366 transitions. [2021-10-08 14:39:52,409 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) [2021-10-08 14:39:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 14366 transitions. [2021-10-08 14:39:52,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:52,420 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:52,420 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] [2021-10-08 14:39:52,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-08 14:39:52,421 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)] === [2021-10-08 14:39:52,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:52,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1116561643, now seen corresponding path program 20 times [2021-10-08 14:39:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:52,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646066647] [2021-10-08 14:39:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:52,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:52,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:52,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646066647] [2021-10-08 14:39:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646066647] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:52,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:52,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426663040] [2021-10-08 14:39:52,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:52,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:52,603 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) [2021-10-08 14:39:53,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:53,646 INFO L93 Difference]: Finished difference Result 6826 states and 20153 transitions. [2021-10-08 14:39:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 14:39:53,647 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 [2021-10-08 14:39:53,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:53,661 INFO L225 Difference]: With dead ends: 6826 [2021-10-08 14:39:53,661 INFO L226 Difference]: Without dead ends: 6606 [2021-10-08 14:39:53,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 382.4ms TimeCoverageRelationStatistics Valid=331, Invalid=1391, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 14:39:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-10-08 14:39:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 4690. [2021-10-08 14:39:53,759 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) [2021-10-08 14:39:53,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4690 states to 4690 states and 14362 transitions. [2021-10-08 14:39:53,776 INFO L78 Accepts]: Start accepts. Automaton has 4690 states and 14362 transitions. Word has length 38 [2021-10-08 14:39:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:53,777 INFO L470 AbstractCegarLoop]: Abstraction has 4690 states and 14362 transitions. [2021-10-08 14:39:53,777 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) [2021-10-08 14:39:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 4690 states and 14362 transitions. [2021-10-08 14:39:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:53,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:53,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:53,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-08 14:39:53,788 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)] === [2021-10-08 14:39:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:53,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1168689487, now seen corresponding path program 21 times [2021-10-08 14:39:53,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:53,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892987882] [2021-10-08 14:39:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:53,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:53,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:53,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892987882] [2021-10-08 14:39:53,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892987882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:53,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:53,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:39:53,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043955161] [2021-10-08 14:39:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:39:53,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:53,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:39:53,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:39:53,884 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) [2021-10-08 14:39:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:54,388 INFO L93 Difference]: Finished difference Result 6932 states and 20770 transitions. [2021-10-08 14:39:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:39:54,389 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 [2021-10-08 14:39:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:54,405 INFO L225 Difference]: With dead ends: 6932 [2021-10-08 14:39:54,405 INFO L226 Difference]: Without dead ends: 6924 [2021-10-08 14:39:54,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 125.8ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:39:54,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2021-10-08 14:39:54,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 4712. [2021-10-08 14:39:54,511 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) [2021-10-08 14:39:54,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 14425 transitions. [2021-10-08 14:39:54,531 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 14425 transitions. Word has length 38 [2021-10-08 14:39:54,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:54,531 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 14425 transitions. [2021-10-08 14:39:54,531 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) [2021-10-08 14:39:54,531 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 14425 transitions. [2021-10-08 14:39:54,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:54,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:54,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:54,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-08 14:39:54,545 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)] === [2021-10-08 14:39:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:54,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1565116113, now seen corresponding path program 22 times [2021-10-08 14:39:54,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:54,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815866532] [2021-10-08 14:39:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:54,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:54,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:54,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:54,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815866532] [2021-10-08 14:39:54,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815866532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:54,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:54,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:54,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432853234] [2021-10-08 14:39:54,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:54,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:54,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:54,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:54,659 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) [2021-10-08 14:39:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:55,303 INFO L93 Difference]: Finished difference Result 7086 states and 21111 transitions. [2021-10-08 14:39:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:39:55,304 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 [2021-10-08 14:39:55,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:55,323 INFO L225 Difference]: With dead ends: 7086 [2021-10-08 14:39:55,323 INFO L226 Difference]: Without dead ends: 6916 [2021-10-08 14:39:55,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 201.5ms TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:39:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-10-08 14:39:55,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4692. [2021-10-08 14:39:55,436 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) [2021-10-08 14:39:55,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 14367 transitions. [2021-10-08 14:39:55,451 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 14367 transitions. Word has length 38 [2021-10-08 14:39:55,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:55,451 INFO L470 AbstractCegarLoop]: Abstraction has 4692 states and 14367 transitions. [2021-10-08 14:39:55,451 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) [2021-10-08 14:39:55,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 14367 transitions. [2021-10-08 14:39:55,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:55,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:55,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:55,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-08 14:39:55,461 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)] === [2021-10-08 14:39:55,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:55,462 INFO L82 PathProgramCache]: Analyzing trace with hash -599856517, now seen corresponding path program 23 times [2021-10-08 14:39:55,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:55,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513421375] [2021-10-08 14:39:55,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:55,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:55,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:55,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513421375] [2021-10-08 14:39:55,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513421375] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:55,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:55,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:39:55,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043087008] [2021-10-08 14:39:55,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:39:55,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:55,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:39:55,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:39:55,565 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) [2021-10-08 14:39:56,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:56,260 INFO L93 Difference]: Finished difference Result 6870 states and 20329 transitions. [2021-10-08 14:39:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:39:56,260 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 [2021-10-08 14:39:56,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:56,276 INFO L225 Difference]: With dead ends: 6870 [2021-10-08 14:39:56,276 INFO L226 Difference]: Without dead ends: 6854 [2021-10-08 14:39:56,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 211.7ms TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:39:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2021-10-08 14:39:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 4674. [2021-10-08 14:39:56,398 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) [2021-10-08 14:39:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 14292 transitions. [2021-10-08 14:39:56,413 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 14292 transitions. Word has length 38 [2021-10-08 14:39:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:56,414 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 14292 transitions. [2021-10-08 14:39:56,414 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) [2021-10-08 14:39:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 14292 transitions. [2021-10-08 14:39:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:56,424 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:56,424 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] [2021-10-08 14:39:56,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-08 14:39:56,424 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)] === [2021-10-08 14:39:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1670670353, now seen corresponding path program 24 times [2021-10-08 14:39:56,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:56,425 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098714692] [2021-10-08 14:39:56,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:56,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:56,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:56,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098714692] [2021-10-08 14:39:56,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098714692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:56,545 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:56,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:56,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630226982] [2021-10-08 14:39:56,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:56,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:56,548 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) [2021-10-08 14:39:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:57,444 INFO L93 Difference]: Finished difference Result 7116 states and 20990 transitions. [2021-10-08 14:39:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 14:39:57,445 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 [2021-10-08 14:39:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:57,464 INFO L225 Difference]: With dead ends: 7116 [2021-10-08 14:39:57,464 INFO L226 Difference]: Without dead ends: 7106 [2021-10-08 14:39:57,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 282.4ms TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 14:39:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7106 states. [2021-10-08 14:39:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7106 to 4672. [2021-10-08 14:39:57,570 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) [2021-10-08 14:39:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4672 states to 4672 states and 14275 transitions. [2021-10-08 14:39:57,585 INFO L78 Accepts]: Start accepts. Automaton has 4672 states and 14275 transitions. Word has length 38 [2021-10-08 14:39:57,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:57,585 INFO L470 AbstractCegarLoop]: Abstraction has 4672 states and 14275 transitions. [2021-10-08 14:39:57,585 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) [2021-10-08 14:39:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4672 states and 14275 transitions. [2021-10-08 14:39:57,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:57,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:57,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:57,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-08 14:39:57,600 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)] === [2021-10-08 14:39:57,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:57,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1494584405, now seen corresponding path program 25 times [2021-10-08 14:39:57,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:57,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550908574] [2021-10-08 14:39:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:57,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:57,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:57,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550908574] [2021-10-08 14:39:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550908574] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:57,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:57,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:39:57,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892426666] [2021-10-08 14:39:57,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:39:57,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:39:57,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:39:57,724 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) [2021-10-08 14:39:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:58,581 INFO L93 Difference]: Finished difference Result 6986 states and 20553 transitions. [2021-10-08 14:39:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:39:58,582 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 [2021-10-08 14:39:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:58,596 INFO L225 Difference]: With dead ends: 6986 [2021-10-08 14:39:58,596 INFO L226 Difference]: Without dead ends: 6814 [2021-10-08 14:39:58,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 271.6ms TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 14:39:58,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6814 states. [2021-10-08 14:39:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6814 to 4620. [2021-10-08 14:39:58,679 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) [2021-10-08 14:39:58,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 14096 transitions. [2021-10-08 14:39:58,690 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 14096 transitions. Word has length 38 [2021-10-08 14:39:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:58,690 INFO L470 AbstractCegarLoop]: Abstraction has 4620 states and 14096 transitions. [2021-10-08 14:39:58,690 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) [2021-10-08 14:39:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 14096 transitions. [2021-10-08 14:39:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:58,698 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:58,698 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] [2021-10-08 14:39:58,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-08 14:39:58,698 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)] === [2021-10-08 14:39:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 820197195, now seen corresponding path program 26 times [2021-10-08 14:39:58,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:58,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061936483] [2021-10-08 14:39:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:58,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:39:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:39:58,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:39:58,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061936483] [2021-10-08 14:39:58,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061936483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:39:58,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:39:58,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:39:58,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676889079] [2021-10-08 14:39:58,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:39:58,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:39:58,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:39:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:39:58,828 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) [2021-10-08 14:39:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:39:59,810 INFO L93 Difference]: Finished difference Result 6984 states and 20370 transitions. [2021-10-08 14:39:59,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:39:59,811 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 [2021-10-08 14:39:59,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:39:59,825 INFO L225 Difference]: With dead ends: 6984 [2021-10-08 14:39:59,825 INFO L226 Difference]: Without dead ends: 6810 [2021-10-08 14:39:59,826 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=295, Invalid=1187, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 14:39:59,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2021-10-08 14:39:59,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 4334. [2021-10-08 14:39:59,905 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) [2021-10-08 14:39:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 13143 transitions. [2021-10-08 14:39:59,915 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 13143 transitions. Word has length 38 [2021-10-08 14:39:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:39:59,915 INFO L470 AbstractCegarLoop]: Abstraction has 4334 states and 13143 transitions. [2021-10-08 14:39:59,915 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) [2021-10-08 14:39:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 13143 transitions. [2021-10-08 14:39:59,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:39:59,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:39:59,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:39:59,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-08 14:39:59,925 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)] === [2021-10-08 14:39:59,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:39:59,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1924801149, now seen corresponding path program 27 times [2021-10-08 14:39:59,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:39:59,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843754761] [2021-10-08 14:39:59,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:39:59,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:39:59,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:00,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:00,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843754761] [2021-10-08 14:40:00,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843754761] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:00,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:00,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:00,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486851547] [2021-10-08 14:40:00,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:00,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:00,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:00,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:00,023 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) [2021-10-08 14:40:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:00,760 INFO L93 Difference]: Finished difference Result 7210 states and 21090 transitions. [2021-10-08 14:40:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:40:00,760 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 [2021-10-08 14:40:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:00,785 INFO L225 Difference]: With dead ends: 7210 [2021-10-08 14:40:00,785 INFO L226 Difference]: Without dead ends: 7202 [2021-10-08 14:40:00,785 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 243.5ms TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:40:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7202 states. [2021-10-08 14:40:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7202 to 4448. [2021-10-08 14:40:00,915 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) [2021-10-08 14:40:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 13460 transitions. [2021-10-08 14:40:00,933 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 13460 transitions. Word has length 38 [2021-10-08 14:40:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:00,933 INFO L470 AbstractCegarLoop]: Abstraction has 4448 states and 13460 transitions. [2021-10-08 14:40:00,933 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) [2021-10-08 14:40:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 13460 transitions. [2021-10-08 14:40:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:00,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:00,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:00,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-08 14:40:00,945 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)] === [2021-10-08 14:40:00,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:00,946 INFO L82 PathProgramCache]: Analyzing trace with hash -325855215, now seen corresponding path program 28 times [2021-10-08 14:40:00,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:00,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726726592] [2021-10-08 14:40:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:00,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:01,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:01,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:01,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726726592] [2021-10-08 14:40:01,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726726592] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:01,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:01,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:01,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864857060] [2021-10-08 14:40:01,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:01,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:01,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:01,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:01,079 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) [2021-10-08 14:40:02,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:02,037 INFO L93 Difference]: Finished difference Result 7376 states and 21409 transitions. [2021-10-08 14:40:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:40:02,037 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 [2021-10-08 14:40:02,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:02,057 INFO L225 Difference]: With dead ends: 7376 [2021-10-08 14:40:02,057 INFO L226 Difference]: Without dead ends: 7124 [2021-10-08 14:40:02,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 307.9ms TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 14:40:02,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7124 states. [2021-10-08 14:40:02,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7124 to 4544. [2021-10-08 14:40:02,139 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) [2021-10-08 14:40:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 13743 transitions. [2021-10-08 14:40:02,150 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 13743 transitions. Word has length 38 [2021-10-08 14:40:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:02,150 INFO L470 AbstractCegarLoop]: Abstraction has 4544 states and 13743 transitions. [2021-10-08 14:40:02,150 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) [2021-10-08 14:40:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 13743 transitions. [2021-10-08 14:40:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:02,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:02,159 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:02,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-08 14:40:02,159 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)] === [2021-10-08 14:40:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:02,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1562169343, now seen corresponding path program 29 times [2021-10-08 14:40:02,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:02,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923900039] [2021-10-08 14:40:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:02,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:02,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:02,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:02,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923900039] [2021-10-08 14:40:02,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923900039] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:02,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:02,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:02,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057488120] [2021-10-08 14:40:02,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:02,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:02,310 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) [2021-10-08 14:40:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:03,141 INFO L93 Difference]: Finished difference Result 7126 states and 21112 transitions. [2021-10-08 14:40:03,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 14:40:03,142 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 [2021-10-08 14:40:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:03,164 INFO L225 Difference]: With dead ends: 7126 [2021-10-08 14:40:03,164 INFO L226 Difference]: Without dead ends: 7118 [2021-10-08 14:40:03,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 293.1ms TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-10-08 14:40:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7118 states. [2021-10-08 14:40:03,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7118 to 4574. [2021-10-08 14:40:03,305 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) [2021-10-08 14:40:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 13849 transitions. [2021-10-08 14:40:03,325 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 13849 transitions. Word has length 38 [2021-10-08 14:40:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:03,326 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 13849 transitions. [2021-10-08 14:40:03,327 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) [2021-10-08 14:40:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 13849 transitions. [2021-10-08 14:40:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:03,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:03,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:03,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-08 14:40:03,339 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)] === [2021-10-08 14:40:03,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:03,339 INFO L82 PathProgramCache]: Analyzing trace with hash -272517057, now seen corresponding path program 30 times [2021-10-08 14:40:03,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:03,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390950112] [2021-10-08 14:40:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:03,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:03,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:03,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390950112] [2021-10-08 14:40:03,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390950112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:03,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:03,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:03,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991531925] [2021-10-08 14:40:03,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:03,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:03,450 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) [2021-10-08 14:40:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:04,407 INFO L93 Difference]: Finished difference Result 7482 states and 22080 transitions. [2021-10-08 14:40:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:40:04,408 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 [2021-10-08 14:40:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:04,425 INFO L225 Difference]: With dead ends: 7482 [2021-10-08 14:40:04,425 INFO L226 Difference]: Without dead ends: 7474 [2021-10-08 14:40:04,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 378.8ms TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:40:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-10-08 14:40:04,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 4572. [2021-10-08 14:40:04,525 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) [2021-10-08 14:40:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 13844 transitions. [2021-10-08 14:40:04,538 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 13844 transitions. Word has length 38 [2021-10-08 14:40:04,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:04,539 INFO L470 AbstractCegarLoop]: Abstraction has 4572 states and 13844 transitions. [2021-10-08 14:40:04,539 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) [2021-10-08 14:40:04,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 13844 transitions. [2021-10-08 14:40:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:04,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:04,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:04,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-08 14:40:04,549 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)] === [2021-10-08 14:40:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:04,549 INFO L82 PathProgramCache]: Analyzing trace with hash -934523677, now seen corresponding path program 31 times [2021-10-08 14:40:04,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:04,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918207192] [2021-10-08 14:40:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:04,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:04,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:04,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:04,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:04,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918207192] [2021-10-08 14:40:04,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918207192] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:04,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:04,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:04,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991645349] [2021-10-08 14:40:04,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:04,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:04,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:04,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:04,699 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) [2021-10-08 14:40:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:05,657 INFO L93 Difference]: Finished difference Result 7142 states and 21136 transitions. [2021-10-08 14:40:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 14:40:05,658 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 [2021-10-08 14:40:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:05,674 INFO L225 Difference]: With dead ends: 7142 [2021-10-08 14:40:05,675 INFO L226 Difference]: Without dead ends: 7100 [2021-10-08 14:40:05,675 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 319.7ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:40:05,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7100 states. [2021-10-08 14:40:05,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7100 to 4560. [2021-10-08 14:40:05,790 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) [2021-10-08 14:40:05,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 13797 transitions. [2021-10-08 14:40:05,802 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 13797 transitions. Word has length 38 [2021-10-08 14:40:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:05,802 INFO L470 AbstractCegarLoop]: Abstraction has 4560 states and 13797 transitions. [2021-10-08 14:40:05,802 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) [2021-10-08 14:40:05,803 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 13797 transitions. [2021-10-08 14:40:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:05,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:05,811 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:05,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-08 14:40:05,811 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)] === [2021-10-08 14:40:05,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:05,811 INFO L82 PathProgramCache]: Analyzing trace with hash -518553713, now seen corresponding path program 32 times [2021-10-08 14:40:05,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:05,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404104473] [2021-10-08 14:40:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:05,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:05,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:05,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404104473] [2021-10-08 14:40:05,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404104473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:05,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:05,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:05,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871279946] [2021-10-08 14:40:05,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:05,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:05,955 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) [2021-10-08 14:40:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:07,083 INFO L93 Difference]: Finished difference Result 7374 states and 21803 transitions. [2021-10-08 14:40:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:40:07,084 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 [2021-10-08 14:40:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:07,100 INFO L225 Difference]: With dead ends: 7374 [2021-10-08 14:40:07,100 INFO L226 Difference]: Without dead ends: 7352 [2021-10-08 14:40:07,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 377.8ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 14:40:07,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7352 states. [2021-10-08 14:40:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7352 to 4552. [2021-10-08 14:40:07,189 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) [2021-10-08 14:40:07,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4552 states to 4552 states and 13781 transitions. [2021-10-08 14:40:07,200 INFO L78 Accepts]: Start accepts. Automaton has 4552 states and 13781 transitions. Word has length 38 [2021-10-08 14:40:07,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:07,201 INFO L470 AbstractCegarLoop]: Abstraction has 4552 states and 13781 transitions. [2021-10-08 14:40:07,201 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) [2021-10-08 14:40:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4552 states and 13781 transitions. [2021-10-08 14:40:07,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:07,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:07,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:07,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-08 14:40:07,209 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)] === [2021-10-08 14:40:07,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash 694436029, now seen corresponding path program 33 times [2021-10-08 14:40:07,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:07,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082673767] [2021-10-08 14:40:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:07,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:07,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:07,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082673767] [2021-10-08 14:40:07,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082673767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:07,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:07,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:07,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323907961] [2021-10-08 14:40:07,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:07,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:07,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:07,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:07,308 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) [2021-10-08 14:40:07,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:07,881 INFO L93 Difference]: Finished difference Result 7300 states and 21296 transitions. [2021-10-08 14:40:07,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:40:07,881 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 [2021-10-08 14:40:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:07,905 INFO L225 Difference]: With dead ends: 7300 [2021-10-08 14:40:07,905 INFO L226 Difference]: Without dead ends: 7258 [2021-10-08 14:40:07,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 181.2ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:40:07,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7258 states. [2021-10-08 14:40:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7258 to 4610. [2021-10-08 14:40:08,053 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) [2021-10-08 14:40:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 13890 transitions. [2021-10-08 14:40:08,073 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 13890 transitions. Word has length 38 [2021-10-08 14:40:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:08,073 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 13890 transitions. [2021-10-08 14:40:08,074 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) [2021-10-08 14:40:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 13890 transitions. [2021-10-08 14:40:08,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:08,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:08,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:08,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-08 14:40:08,086 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)] === [2021-10-08 14:40:08,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:08,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1140250371, now seen corresponding path program 34 times [2021-10-08 14:40:08,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:08,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071418971] [2021-10-08 14:40:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:08,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:08,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:08,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071418971] [2021-10-08 14:40:08,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071418971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:08,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:08,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:08,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714951540] [2021-10-08 14:40:08,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:08,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:08,194 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) [2021-10-08 14:40:09,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:09,124 INFO L93 Difference]: Finished difference Result 7432 states and 21606 transitions. [2021-10-08 14:40:09,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:40:09,125 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 [2021-10-08 14:40:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:09,160 INFO L225 Difference]: With dead ends: 7432 [2021-10-08 14:40:09,161 INFO L226 Difference]: Without dead ends: 7400 [2021-10-08 14:40:09,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 307.0ms TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:40:09,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2021-10-08 14:40:09,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 4590. [2021-10-08 14:40:09,561 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) [2021-10-08 14:40:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 13830 transitions. [2021-10-08 14:40:09,614 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 13830 transitions. Word has length 38 [2021-10-08 14:40:09,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:09,615 INFO L470 AbstractCegarLoop]: Abstraction has 4590 states and 13830 transitions. [2021-10-08 14:40:09,615 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) [2021-10-08 14:40:09,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 13830 transitions. [2021-10-08 14:40:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:09,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:09,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:09,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-08 14:40:09,657 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)] === [2021-10-08 14:40:09,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:09,660 INFO L82 PathProgramCache]: Analyzing trace with hash -2134563991, now seen corresponding path program 35 times [2021-10-08 14:40:09,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:09,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440267634] [2021-10-08 14:40:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:09,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:09,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:09,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440267634] [2021-10-08 14:40:09,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440267634] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:09,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:09,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:09,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527498797] [2021-10-08 14:40:09,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:09,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:09,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:09,859 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) [2021-10-08 14:40:10,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:10,520 INFO L93 Difference]: Finished difference Result 6442 states and 18800 transitions. [2021-10-08 14:40:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:40:10,520 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 [2021-10-08 14:40:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:10,567 INFO L225 Difference]: With dead ends: 6442 [2021-10-08 14:40:10,567 INFO L226 Difference]: Without dead ends: 6388 [2021-10-08 14:40:10,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 238.8ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:40:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2021-10-08 14:40:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 4610. [2021-10-08 14:40:10,643 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) [2021-10-08 14:40:10,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4610 states to 4610 states and 13866 transitions. [2021-10-08 14:40:10,653 INFO L78 Accepts]: Start accepts. Automaton has 4610 states and 13866 transitions. Word has length 38 [2021-10-08 14:40:10,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:10,654 INFO L470 AbstractCegarLoop]: Abstraction has 4610 states and 13866 transitions. [2021-10-08 14:40:10,654 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) [2021-10-08 14:40:10,654 INFO L276 IsEmpty]: Start isEmpty. Operand 4610 states and 13866 transitions. [2021-10-08 14:40:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:10,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:10,662 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] [2021-10-08 14:40:10,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-08 14:40:10,663 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)] === [2021-10-08 14:40:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash -839458735, now seen corresponding path program 36 times [2021-10-08 14:40:10,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:10,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841863731] [2021-10-08 14:40:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:10,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:10,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:10,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:10,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841863731] [2021-10-08 14:40:10,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841863731] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:10,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:10,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656159582] [2021-10-08 14:40:10,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:10,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:10,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:10,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:10,793 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) [2021-10-08 14:40:11,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:11,623 INFO L93 Difference]: Finished difference Result 7128 states and 20615 transitions. [2021-10-08 14:40:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:40:11,624 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 [2021-10-08 14:40:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:11,639 INFO L225 Difference]: With dead ends: 7128 [2021-10-08 14:40:11,639 INFO L226 Difference]: Without dead ends: 6746 [2021-10-08 14:40:11,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 248.8ms TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:40:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-10-08 14:40:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 4570. [2021-10-08 14:40:11,722 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) [2021-10-08 14:40:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 13693 transitions. [2021-10-08 14:40:11,734 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 13693 transitions. Word has length 38 [2021-10-08 14:40:11,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:11,734 INFO L470 AbstractCegarLoop]: Abstraction has 4570 states and 13693 transitions. [2021-10-08 14:40:11,734 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) [2021-10-08 14:40:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 13693 transitions. [2021-10-08 14:40:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:11,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:11,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:11,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-08 14:40:11,744 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)] === [2021-10-08 14:40:11,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:11,745 INFO L82 PathProgramCache]: Analyzing trace with hash -423488771, now seen corresponding path program 37 times [2021-10-08 14:40:11,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:11,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81688012] [2021-10-08 14:40:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:11,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:11,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:11,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81688012] [2021-10-08 14:40:11,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81688012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:11,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:11,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:11,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304819264] [2021-10-08 14:40:11,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:11,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:11,885 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) [2021-10-08 14:40:12,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:12,862 INFO L93 Difference]: Finished difference Result 6686 states and 19343 transitions. [2021-10-08 14:40:12,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:40:12,863 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 [2021-10-08 14:40:12,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:12,887 INFO L225 Difference]: With dead ends: 6686 [2021-10-08 14:40:12,887 INFO L226 Difference]: Without dead ends: 6606 [2021-10-08 14:40:12,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 329.6ms TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 14:40:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6606 states. [2021-10-08 14:40:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6606 to 4524. [2021-10-08 14:40:12,983 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) [2021-10-08 14:40:12,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 13563 transitions. [2021-10-08 14:40:12,993 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 13563 transitions. Word has length 38 [2021-10-08 14:40:12,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:12,994 INFO L470 AbstractCegarLoop]: Abstraction has 4524 states and 13563 transitions. [2021-10-08 14:40:12,994 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) [2021-10-08 14:40:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 13563 transitions. [2021-10-08 14:40:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:13,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:13,001 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] [2021-10-08 14:40:13,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-08 14:40:13,001 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)] === [2021-10-08 14:40:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:13,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1171765735, now seen corresponding path program 38 times [2021-10-08 14:40:13,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:13,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220485050] [2021-10-08 14:40:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:13,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:13,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:13,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220485050] [2021-10-08 14:40:13,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220485050] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:13,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:13,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:13,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915522292] [2021-10-08 14:40:13,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:13,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:13,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:13,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:13,148 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) [2021-10-08 14:40:13,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:13,974 INFO L93 Difference]: Finished difference Result 6042 states and 17591 transitions. [2021-10-08 14:40:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:40:13,975 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 [2021-10-08 14:40:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:13,994 INFO L225 Difference]: With dead ends: 6042 [2021-10-08 14:40:13,994 INFO L226 Difference]: Without dead ends: 5900 [2021-10-08 14:40:13,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 246.6ms TimeCoverageRelationStatistics Valid=190, Invalid=680, Unknown=0, NotChecked=0, Total=870 [2021-10-08 14:40:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2021-10-08 14:40:14,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 4500. [2021-10-08 14:40:14,108 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) [2021-10-08 14:40:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 13496 transitions. [2021-10-08 14:40:14,124 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 13496 transitions. Word has length 38 [2021-10-08 14:40:14,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:14,125 INFO L470 AbstractCegarLoop]: Abstraction has 4500 states and 13496 transitions. [2021-10-08 14:40:14,125 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) [2021-10-08 14:40:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 13496 transitions. [2021-10-08 14:40:14,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:14,135 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:14,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:14,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-08 14:40:14,136 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)] === [2021-10-08 14:40:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:14,136 INFO L82 PathProgramCache]: Analyzing trace with hash -821669551, now seen corresponding path program 39 times [2021-10-08 14:40:14,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:14,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698192248] [2021-10-08 14:40:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:14,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:14,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:14,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698192248] [2021-10-08 14:40:14,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698192248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:14,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:14,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:14,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658440889] [2021-10-08 14:40:14,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:14,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:14,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:14,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:14,226 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) [2021-10-08 14:40:14,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:14,828 INFO L93 Difference]: Finished difference Result 6794 states and 19908 transitions. [2021-10-08 14:40:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:40:14,828 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 [2021-10-08 14:40:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:14,843 INFO L225 Difference]: With dead ends: 6794 [2021-10-08 14:40:14,843 INFO L226 Difference]: Without dead ends: 6620 [2021-10-08 14:40:14,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 174.7ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:40:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2021-10-08 14:40:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 4646. [2021-10-08 14:40:14,925 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) [2021-10-08 14:40:14,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4646 states to 4646 states and 13910 transitions. [2021-10-08 14:40:14,936 INFO L78 Accepts]: Start accepts. Automaton has 4646 states and 13910 transitions. Word has length 38 [2021-10-08 14:40:14,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:14,936 INFO L470 AbstractCegarLoop]: Abstraction has 4646 states and 13910 transitions. [2021-10-08 14:40:14,936 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) [2021-10-08 14:40:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4646 states and 13910 transitions. [2021-10-08 14:40:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:14,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:14,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:14,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-08 14:40:14,944 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)] === [2021-10-08 14:40:14,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1592406527, now seen corresponding path program 40 times [2021-10-08 14:40:14,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:14,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186208879] [2021-10-08 14:40:14,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:14,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:15,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:15,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186208879] [2021-10-08 14:40:15,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186208879] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:15,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:15,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:15,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072655415] [2021-10-08 14:40:15,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:15,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:15,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:15,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:15,044 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) [2021-10-08 14:40:15,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:15,782 INFO L93 Difference]: Finished difference Result 7428 states and 21632 transitions. [2021-10-08 14:40:15,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:40:15,783 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 [2021-10-08 14:40:15,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:15,801 INFO L225 Difference]: With dead ends: 7428 [2021-10-08 14:40:15,801 INFO L226 Difference]: Without dead ends: 7412 [2021-10-08 14:40:15,802 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 280.7ms TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 14:40:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2021-10-08 14:40:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 4732. [2021-10-08 14:40:15,887 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) [2021-10-08 14:40:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 14177 transitions. [2021-10-08 14:40:15,899 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 14177 transitions. Word has length 38 [2021-10-08 14:40:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:15,899 INFO L470 AbstractCegarLoop]: Abstraction has 4732 states and 14177 transitions. [2021-10-08 14:40:15,899 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) [2021-10-08 14:40:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 14177 transitions. [2021-10-08 14:40:15,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:15,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:15,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:15,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-08 14:40:15,907 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)] === [2021-10-08 14:40:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -242279873, now seen corresponding path program 41 times [2021-10-08 14:40:15,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:15,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523570101] [2021-10-08 14:40:15,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:15,908 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:16,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:16,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523570101] [2021-10-08 14:40:16,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523570101] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:16,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:16,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:16,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409575219] [2021-10-08 14:40:16,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:16,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:16,016 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) [2021-10-08 14:40:17,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:17,033 INFO L93 Difference]: Finished difference Result 7894 states and 22808 transitions. [2021-10-08 14:40:17,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 14:40:17,033 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 [2021-10-08 14:40:17,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:17,050 INFO L225 Difference]: With dead ends: 7894 [2021-10-08 14:40:17,050 INFO L226 Difference]: Without dead ends: 7862 [2021-10-08 14:40:17,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 409.1ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 14:40:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7862 states. [2021-10-08 14:40:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7862 to 4712. [2021-10-08 14:40:17,145 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) [2021-10-08 14:40:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4712 states to 4712 states and 14117 transitions. [2021-10-08 14:40:17,157 INFO L78 Accepts]: Start accepts. Automaton has 4712 states and 14117 transitions. Word has length 38 [2021-10-08 14:40:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:17,158 INFO L470 AbstractCegarLoop]: Abstraction has 4712 states and 14117 transitions. [2021-10-08 14:40:17,158 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) [2021-10-08 14:40:17,158 INFO L276 IsEmpty]: Start isEmpty. Operand 4712 states and 14117 transitions. [2021-10-08 14:40:17,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:17,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:17,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:17,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-08 14:40:17,166 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)] === [2021-10-08 14:40:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1236593493, now seen corresponding path program 42 times [2021-10-08 14:40:17,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:17,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587457216] [2021-10-08 14:40:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:17,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:17,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:17,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587457216] [2021-10-08 14:40:17,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587457216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:17,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:17,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:17,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404369391] [2021-10-08 14:40:17,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:17,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:17,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:17,281 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) [2021-10-08 14:40:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:18,114 INFO L93 Difference]: Finished difference Result 6938 states and 20173 transitions. [2021-10-08 14:40:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 14:40:18,115 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 [2021-10-08 14:40:18,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:18,178 INFO L225 Difference]: With dead ends: 6938 [2021-10-08 14:40:18,179 INFO L226 Difference]: Without dead ends: 6886 [2021-10-08 14:40:18,180 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 359.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:40:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6886 states. [2021-10-08 14:40:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6886 to 4652. [2021-10-08 14:40:18,261 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) [2021-10-08 14:40:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4652 states to 4652 states and 13941 transitions. [2021-10-08 14:40:18,272 INFO L78 Accepts]: Start accepts. Automaton has 4652 states and 13941 transitions. Word has length 38 [2021-10-08 14:40:18,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:18,273 INFO L470 AbstractCegarLoop]: Abstraction has 4652 states and 13941 transitions. [2021-10-08 14:40:18,273 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) [2021-10-08 14:40:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 4652 states and 13941 transitions. [2021-10-08 14:40:18,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:18,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:18,282 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] [2021-10-08 14:40:18,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-08 14:40:18,282 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)] === [2021-10-08 14:40:18,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:18,283 INFO L82 PathProgramCache]: Analyzing trace with hash -315494859, now seen corresponding path program 43 times [2021-10-08 14:40:18,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:18,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218686605] [2021-10-08 14:40:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:18,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:18,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:18,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:18,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:18,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218686605] [2021-10-08 14:40:18,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218686605] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:18,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:18,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:18,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660657110] [2021-10-08 14:40:18,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:18,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:18,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:18,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:18,390 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) [2021-10-08 14:40:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:19,015 INFO L93 Difference]: Finished difference Result 6444 states and 19056 transitions. [2021-10-08 14:40:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:40:19,015 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 [2021-10-08 14:40:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:19,030 INFO L225 Difference]: With dead ends: 6444 [2021-10-08 14:40:19,030 INFO L226 Difference]: Without dead ends: 6420 [2021-10-08 14:40:19,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 225.2ms TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:40:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6420 states. [2021-10-08 14:40:19,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6420 to 4656. [2021-10-08 14:40:19,113 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) [2021-10-08 14:40:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4656 states to 4656 states and 13951 transitions. [2021-10-08 14:40:19,124 INFO L78 Accepts]: Start accepts. Automaton has 4656 states and 13951 transitions. Word has length 38 [2021-10-08 14:40:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:19,124 INFO L470 AbstractCegarLoop]: Abstraction has 4656 states and 13951 transitions. [2021-10-08 14:40:19,125 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) [2021-10-08 14:40:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 4656 states and 13951 transitions. [2021-10-08 14:40:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:19,132 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:19,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:19,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-08 14:40:19,133 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)] === [2021-10-08 14:40:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:19,134 INFO L82 PathProgramCache]: Analyzing trace with hash -635995399, now seen corresponding path program 44 times [2021-10-08 14:40:19,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:19,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322847512] [2021-10-08 14:40:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:19,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:19,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:19,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322847512] [2021-10-08 14:40:19,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322847512] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:19,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:19,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:19,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062515357] [2021-10-08 14:40:19,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:19,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:19,252 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) [2021-10-08 14:40:20,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:20,205 INFO L93 Difference]: Finished difference Result 7090 states and 20504 transitions. [2021-10-08 14:40:20,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:40:20,206 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 [2021-10-08 14:40:20,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:20,221 INFO L225 Difference]: With dead ends: 7090 [2021-10-08 14:40:20,221 INFO L226 Difference]: Without dead ends: 7016 [2021-10-08 14:40:20,222 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 364.4ms TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 14:40:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2021-10-08 14:40:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 4770. [2021-10-08 14:40:20,308 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) [2021-10-08 14:40:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4770 states to 4770 states and 14278 transitions. [2021-10-08 14:40:20,320 INFO L78 Accepts]: Start accepts. Automaton has 4770 states and 14278 transitions. Word has length 38 [2021-10-08 14:40:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:20,320 INFO L470 AbstractCegarLoop]: Abstraction has 4770 states and 14278 transitions. [2021-10-08 14:40:20,320 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) [2021-10-08 14:40:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4770 states and 14278 transitions. [2021-10-08 14:40:20,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:20,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:20,328 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] [2021-10-08 14:40:20,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-08 14:40:20,329 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)] === [2021-10-08 14:40:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:20,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1716982443, now seen corresponding path program 45 times [2021-10-08 14:40:20,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:20,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201727803] [2021-10-08 14:40:20,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:20,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:20,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:20,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:20,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201727803] [2021-10-08 14:40:20,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201727803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:20,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:20,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:40:20,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112497467] [2021-10-08 14:40:20,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:40:20,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:20,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:40:20,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:40:20,413 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) [2021-10-08 14:40:20,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:20,854 INFO L93 Difference]: Finished difference Result 6436 states and 18904 transitions. [2021-10-08 14:40:20,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:40:20,855 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 [2021-10-08 14:40:20,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:20,877 INFO L225 Difference]: With dead ends: 6436 [2021-10-08 14:40:20,877 INFO L226 Difference]: Without dead ends: 6432 [2021-10-08 14:40:20,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:40:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6432 states. [2021-10-08 14:40:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6432 to 4830. [2021-10-08 14:40:20,981 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) [2021-10-08 14:40:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4830 states to 4830 states and 14406 transitions. [2021-10-08 14:40:20,995 INFO L78 Accepts]: Start accepts. Automaton has 4830 states and 14406 transitions. Word has length 38 [2021-10-08 14:40:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:20,996 INFO L470 AbstractCegarLoop]: Abstraction has 4830 states and 14406 transitions. [2021-10-08 14:40:20,996 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) [2021-10-08 14:40:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4830 states and 14406 transitions. [2021-10-08 14:40:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:21,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:21,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:21,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-08 14:40:21,005 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)] === [2021-10-08 14:40:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:21,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1692083485, now seen corresponding path program 46 times [2021-10-08 14:40:21,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:21,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574186598] [2021-10-08 14:40:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:21,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:21,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:21,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574186598] [2021-10-08 14:40:21,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574186598] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:21,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:21,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:21,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963446596] [2021-10-08 14:40:21,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:21,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:21,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:21,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:21,116 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) [2021-10-08 14:40:22,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:22,023 INFO L93 Difference]: Finished difference Result 7552 states and 21793 transitions. [2021-10-08 14:40:22,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:40:22,024 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 [2021-10-08 14:40:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:22,040 INFO L225 Difference]: With dead ends: 7552 [2021-10-08 14:40:22,040 INFO L226 Difference]: Without dead ends: 7484 [2021-10-08 14:40:22,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 309.2ms TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 14:40:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7484 states. [2021-10-08 14:40:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7484 to 4878. [2021-10-08 14:40:22,132 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) [2021-10-08 14:40:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 14517 transitions. [2021-10-08 14:40:22,144 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 14517 transitions. Word has length 38 [2021-10-08 14:40:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:22,144 INFO L470 AbstractCegarLoop]: Abstraction has 4878 states and 14517 transitions. [2021-10-08 14:40:22,144 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) [2021-10-08 14:40:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 14517 transitions. [2021-10-08 14:40:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:22,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:22,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:22,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-08 14:40:22,153 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)] === [2021-10-08 14:40:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1276113521, now seen corresponding path program 47 times [2021-10-08 14:40:22,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:22,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318159964] [2021-10-08 14:40:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:22,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:22,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:22,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318159964] [2021-10-08 14:40:22,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318159964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:22,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:22,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:22,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65794061] [2021-10-08 14:40:22,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:22,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:22,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:22,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:22,277 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) [2021-10-08 14:40:23,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:23,396 INFO L93 Difference]: Finished difference Result 7946 states and 22788 transitions. [2021-10-08 14:40:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 14:40:23,396 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 [2021-10-08 14:40:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:23,411 INFO L225 Difference]: With dead ends: 7946 [2021-10-08 14:40:23,412 INFO L226 Difference]: Without dead ends: 7824 [2021-10-08 14:40:23,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 447.2ms TimeCoverageRelationStatistics Valid=430, Invalid=1640, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 14:40:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-10-08 14:40:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 4704. [2021-10-08 14:40:23,501 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) [2021-10-08 14:40:23,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4704 states to 4704 states and 14036 transitions. [2021-10-08 14:40:23,512 INFO L78 Accepts]: Start accepts. Automaton has 4704 states and 14036 transitions. Word has length 38 [2021-10-08 14:40:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:23,513 INFO L470 AbstractCegarLoop]: Abstraction has 4704 states and 14036 transitions. [2021-10-08 14:40:23,513 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) [2021-10-08 14:40:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 4704 states and 14036 transitions. [2021-10-08 14:40:23,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:23,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:23,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:23,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-08 14:40:23,521 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)] === [2021-10-08 14:40:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:23,522 INFO L82 PathProgramCache]: Analyzing trace with hash 615746949, now seen corresponding path program 48 times [2021-10-08 14:40:23,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:23,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824264888] [2021-10-08 14:40:23,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:23,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:23,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:23,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824264888] [2021-10-08 14:40:23,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824264888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:23,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:23,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:23,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483610354] [2021-10-08 14:40:23,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:23,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:23,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:23,636 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) [2021-10-08 14:40:24,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:24,397 INFO L93 Difference]: Finished difference Result 6598 states and 19271 transitions. [2021-10-08 14:40:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:40:24,398 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 [2021-10-08 14:40:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:24,418 INFO L225 Difference]: With dead ends: 6598 [2021-10-08 14:40:24,419 INFO L226 Difference]: Without dead ends: 6526 [2021-10-08 14:40:24,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 238.0ms TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:40:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2021-10-08 14:40:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 4694. [2021-10-08 14:40:24,522 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) [2021-10-08 14:40:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 14020 transitions. [2021-10-08 14:40:24,534 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 14020 transitions. Word has length 38 [2021-10-08 14:40:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:24,534 INFO L470 AbstractCegarLoop]: Abstraction has 4694 states and 14020 transitions. [2021-10-08 14:40:24,534 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) [2021-10-08 14:40:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 14020 transitions. [2021-10-08 14:40:24,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:24,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:24,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:24,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-08 14:40:24,543 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)] === [2021-10-08 14:40:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:24,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1844068427, now seen corresponding path program 49 times [2021-10-08 14:40:24,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:24,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014137816] [2021-10-08 14:40:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:24,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:24,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:24,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:24,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014137816] [2021-10-08 14:40:24,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014137816] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:24,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:24,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:40:24,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694196911] [2021-10-08 14:40:24,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:40:24,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:24,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:40:24,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:40:24,623 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) [2021-10-08 14:40:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:25,064 INFO L93 Difference]: Finished difference Result 6614 states and 19300 transitions. [2021-10-08 14:40:25,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:40:25,064 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 [2021-10-08 14:40:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:25,077 INFO L225 Difference]: With dead ends: 6614 [2021-10-08 14:40:25,077 INFO L226 Difference]: Without dead ends: 6384 [2021-10-08 14:40:25,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 125.9ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:40:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-10-08 14:40:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 4918. [2021-10-08 14:40:25,196 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) [2021-10-08 14:40:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4918 states to 4918 states and 14665 transitions. [2021-10-08 14:40:25,208 INFO L78 Accepts]: Start accepts. Automaton has 4918 states and 14665 transitions. Word has length 38 [2021-10-08 14:40:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:25,208 INFO L470 AbstractCegarLoop]: Abstraction has 4918 states and 14665 transitions. [2021-10-08 14:40:25,209 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) [2021-10-08 14:40:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4918 states and 14665 transitions. [2021-10-08 14:40:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:25,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:25,217 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:25,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-08 14:40:25,218 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)] === [2021-10-08 14:40:25,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:25,219 INFO L82 PathProgramCache]: Analyzing trace with hash -548174967, now seen corresponding path program 50 times [2021-10-08 14:40:25,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:25,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776498649] [2021-10-08 14:40:25,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:25,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:25,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:25,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776498649] [2021-10-08 14:40:25,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776498649] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:25,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:25,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:25,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712606294] [2021-10-08 14:40:25,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:25,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:25,319 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) [2021-10-08 14:40:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:25,961 INFO L93 Difference]: Finished difference Result 6736 states and 19460 transitions. [2021-10-08 14:40:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:40:25,961 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 [2021-10-08 14:40:25,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:25,976 INFO L225 Difference]: With dead ends: 6736 [2021-10-08 14:40:25,976 INFO L226 Difference]: Without dead ends: 6700 [2021-10-08 14:40:25,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 229.5ms TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:40:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6700 states. [2021-10-08 14:40:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6700 to 4980. [2021-10-08 14:40:26,058 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) [2021-10-08 14:40:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 14830 transitions. [2021-10-08 14:40:26,071 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 14830 transitions. Word has length 38 [2021-10-08 14:40:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:26,071 INFO L470 AbstractCegarLoop]: Abstraction has 4980 states and 14830 transitions. [2021-10-08 14:40:26,071 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) [2021-10-08 14:40:26,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 14830 transitions. [2021-10-08 14:40:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:26,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:26,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:26,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-08 14:40:26,080 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)] === [2021-10-08 14:40:26,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:26,081 INFO L82 PathProgramCache]: Analyzing trace with hash -41110603, now seen corresponding path program 51 times [2021-10-08 14:40:26,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:26,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22880056] [2021-10-08 14:40:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:26,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:26,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:26,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22880056] [2021-10-08 14:40:26,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22880056] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:26,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:26,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:26,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541694692] [2021-10-08 14:40:26,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:26,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:26,209 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) [2021-10-08 14:40:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:26,904 INFO L93 Difference]: Finished difference Result 7288 states and 21125 transitions. [2021-10-08 14:40:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:40:26,905 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 [2021-10-08 14:40:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:26,922 INFO L225 Difference]: With dead ends: 7288 [2021-10-08 14:40:26,923 INFO L226 Difference]: Without dead ends: 7272 [2021-10-08 14:40:26,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 204.9ms TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:40:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2021-10-08 14:40:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 5050. [2021-10-08 14:40:27,020 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) [2021-10-08 14:40:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5050 states to 5050 states and 15059 transitions. [2021-10-08 14:40:27,033 INFO L78 Accepts]: Start accepts. Automaton has 5050 states and 15059 transitions. Word has length 38 [2021-10-08 14:40:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:27,034 INFO L470 AbstractCegarLoop]: Abstraction has 5050 states and 15059 transitions. [2021-10-08 14:40:27,034 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) [2021-10-08 14:40:27,034 INFO L276 IsEmpty]: Start isEmpty. Operand 5050 states and 15059 transitions. [2021-10-08 14:40:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:27,043 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:27,043 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-08 14:40:27,044 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)] === [2021-10-08 14:40:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:27,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1111924439, now seen corresponding path program 52 times [2021-10-08 14:40:27,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:27,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018491551] [2021-10-08 14:40:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:27,047 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:27,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:27,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:27,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018491551] [2021-10-08 14:40:27,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018491551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:27,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:27,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:27,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913466320] [2021-10-08 14:40:27,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:27,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:27,159 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) [2021-10-08 14:40:27,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:27,994 INFO L93 Difference]: Finished difference Result 7660 states and 22070 transitions. [2021-10-08 14:40:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:40:27,995 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 [2021-10-08 14:40:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:28,018 INFO L225 Difference]: With dead ends: 7660 [2021-10-08 14:40:28,018 INFO L226 Difference]: Without dead ends: 7614 [2021-10-08 14:40:28,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 292.3ms TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:40:28,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7614 states. [2021-10-08 14:40:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7614 to 5018. [2021-10-08 14:40:28,165 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) [2021-10-08 14:40:28,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 14979 transitions. [2021-10-08 14:40:28,185 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 14979 transitions. Word has length 38 [2021-10-08 14:40:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:28,185 INFO L470 AbstractCegarLoop]: Abstraction has 5018 states and 14979 transitions. [2021-10-08 14:40:28,185 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) [2021-10-08 14:40:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 14979 transitions. [2021-10-08 14:40:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:28,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:28,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:28,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-08 14:40:28,199 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)] === [2021-10-08 14:40:28,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:28,199 INFO L82 PathProgramCache]: Analyzing trace with hash -640692307, now seen corresponding path program 53 times [2021-10-08 14:40:28,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:28,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363736291] [2021-10-08 14:40:28,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:28,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:28,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:28,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363736291] [2021-10-08 14:40:28,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363736291] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:28,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:28,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:28,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325984212] [2021-10-08 14:40:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:28,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:28,348 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) [2021-10-08 14:40:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:29,188 INFO L93 Difference]: Finished difference Result 6694 states and 19085 transitions. [2021-10-08 14:40:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:40:29,189 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 [2021-10-08 14:40:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:29,202 INFO L225 Difference]: With dead ends: 6694 [2021-10-08 14:40:29,202 INFO L226 Difference]: Without dead ends: 6402 [2021-10-08 14:40:29,203 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 288.2ms TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:40:29,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-10-08 14:40:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 4908. [2021-10-08 14:40:29,282 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) [2021-10-08 14:40:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 14584 transitions. [2021-10-08 14:40:29,294 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 14584 transitions. Word has length 38 [2021-10-08 14:40:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:29,294 INFO L470 AbstractCegarLoop]: Abstraction has 4908 states and 14584 transitions. [2021-10-08 14:40:29,295 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) [2021-10-08 14:40:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 14584 transitions. [2021-10-08 14:40:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:29,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:29,303 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] [2021-10-08 14:40:29,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-08 14:40:29,303 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)] === [2021-10-08 14:40:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:29,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1960812979, now seen corresponding path program 54 times [2021-10-08 14:40:29,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:29,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707242153] [2021-10-08 14:40:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:29,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:29,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:29,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:29,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707242153] [2021-10-08 14:40:29,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707242153] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:29,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:29,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:29,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476030999] [2021-10-08 14:40:29,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:29,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:29,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:29,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:29,435 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) [2021-10-08 14:40:30,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:30,201 INFO L93 Difference]: Finished difference Result 6496 states and 18626 transitions. [2021-10-08 14:40:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:40:30,201 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 [2021-10-08 14:40:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:30,215 INFO L225 Difference]: With dead ends: 6496 [2021-10-08 14:40:30,216 INFO L226 Difference]: Without dead ends: 6452 [2021-10-08 14:40:30,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=159, Invalid=543, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:40:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2021-10-08 14:40:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 4960. [2021-10-08 14:40:30,297 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) [2021-10-08 14:40:30,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 14754 transitions. [2021-10-08 14:40:30,310 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 14754 transitions. Word has length 38 [2021-10-08 14:40:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:30,311 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 14754 transitions. [2021-10-08 14:40:30,311 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) [2021-10-08 14:40:30,311 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 14754 transitions. [2021-10-08 14:40:30,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:30,320 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:30,320 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] [2021-10-08 14:40:30,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-08 14:40:30,320 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)] === [2021-10-08 14:40:30,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:30,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1286425769, now seen corresponding path program 55 times [2021-10-08 14:40:30,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:30,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133240929] [2021-10-08 14:40:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:30,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:30,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:30,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133240929] [2021-10-08 14:40:30,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133240929] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:30,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:30,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:30,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077008868] [2021-10-08 14:40:30,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:30,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:30,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:30,472 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) [2021-10-08 14:40:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:31,443 INFO L93 Difference]: Finished difference Result 6790 states and 19347 transitions. [2021-10-08 14:40:31,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:40:31,444 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 [2021-10-08 14:40:31,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:31,457 INFO L225 Difference]: With dead ends: 6790 [2021-10-08 14:40:31,458 INFO L226 Difference]: Without dead ends: 6754 [2021-10-08 14:40:31,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 334.2ms TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 14:40:31,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6754 states. [2021-10-08 14:40:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6754 to 4952. [2021-10-08 14:40:31,535 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) [2021-10-08 14:40:31,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4952 states to 4952 states and 14736 transitions. [2021-10-08 14:40:31,546 INFO L78 Accepts]: Start accepts. Automaton has 4952 states and 14736 transitions. Word has length 38 [2021-10-08 14:40:31,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:31,547 INFO L470 AbstractCegarLoop]: Abstraction has 4952 states and 14736 transitions. [2021-10-08 14:40:31,547 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) [2021-10-08 14:40:31,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4952 states and 14736 transitions. [2021-10-08 14:40:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:31,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:31,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:31,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-08 14:40:31,555 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)] === [2021-10-08 14:40:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash -998825361, now seen corresponding path program 56 times [2021-10-08 14:40:31,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:31,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960683925] [2021-10-08 14:40:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:31,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:31,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:31,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960683925] [2021-10-08 14:40:31,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960683925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:31,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:31,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:31,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763269904] [2021-10-08 14:40:31,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:31,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:31,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:31,669 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) [2021-10-08 14:40:32,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:32,361 INFO L93 Difference]: Finished difference Result 7096 states and 20507 transitions. [2021-10-08 14:40:32,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:40:32,361 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 [2021-10-08 14:40:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:32,376 INFO L225 Difference]: With dead ends: 7096 [2021-10-08 14:40:32,376 INFO L226 Difference]: Without dead ends: 7088 [2021-10-08 14:40:32,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 225.0ms TimeCoverageRelationStatistics Valid=212, Invalid=600, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:40:32,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7088 states. [2021-10-08 14:40:32,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7088 to 4970. [2021-10-08 14:40:32,504 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) [2021-10-08 14:40:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4970 states to 4970 states and 14783 transitions. [2021-10-08 14:40:32,515 INFO L78 Accepts]: Start accepts. Automaton has 4970 states and 14783 transitions. Word has length 38 [2021-10-08 14:40:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:32,516 INFO L470 AbstractCegarLoop]: Abstraction has 4970 states and 14783 transitions. [2021-10-08 14:40:32,516 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) [2021-10-08 14:40:32,516 INFO L276 IsEmpty]: Start isEmpty. Operand 4970 states and 14783 transitions. [2021-10-08 14:40:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:32,524 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:32,524 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] [2021-10-08 14:40:32,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-08 14:40:32,524 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)] === [2021-10-08 14:40:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:32,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1395251987, now seen corresponding path program 57 times [2021-10-08 14:40:32,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:32,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165926286] [2021-10-08 14:40:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:32,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:32,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:32,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:32,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165926286] [2021-10-08 14:40:32,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165926286] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:32,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:32,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033588508] [2021-10-08 14:40:32,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:32,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:32,646 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) [2021-10-08 14:40:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:33,367 INFO L93 Difference]: Finished difference Result 7182 states and 20698 transitions. [2021-10-08 14:40:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:40:33,367 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 [2021-10-08 14:40:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:33,383 INFO L225 Difference]: With dead ends: 7182 [2021-10-08 14:40:33,383 INFO L226 Difference]: Without dead ends: 7148 [2021-10-08 14:40:33,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 231.8ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:40:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7148 states. [2021-10-08 14:40:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7148 to 4966. [2021-10-08 14:40:33,475 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) [2021-10-08 14:40:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14771 transitions. [2021-10-08 14:40:33,487 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 14771 transitions. Word has length 38 [2021-10-08 14:40:33,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:33,487 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 14771 transitions. [2021-10-08 14:40:33,487 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) [2021-10-08 14:40:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 14771 transitions. [2021-10-08 14:40:33,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:33,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:33,495 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] [2021-10-08 14:40:33,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-08 14:40:33,495 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)] === [2021-10-08 14:40:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:33,496 INFO L82 PathProgramCache]: Analyzing trace with hash -429992391, now seen corresponding path program 58 times [2021-10-08 14:40:33,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:33,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123233389] [2021-10-08 14:40:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:33,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:33,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:33,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123233389] [2021-10-08 14:40:33,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123233389] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:33,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:33,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:33,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278936691] [2021-10-08 14:40:33,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:33,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:33,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:33,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:33,644 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) [2021-10-08 14:40:34,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:34,404 INFO L93 Difference]: Finished difference Result 7298 states and 21223 transitions. [2021-10-08 14:40:34,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 14:40:34,404 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 [2021-10-08 14:40:34,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:34,421 INFO L225 Difference]: With dead ends: 7298 [2021-10-08 14:40:34,421 INFO L226 Difference]: Without dead ends: 7290 [2021-10-08 14:40:34,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 256.8ms TimeCoverageRelationStatistics Valid=237, Invalid=755, Unknown=0, NotChecked=0, Total=992 [2021-10-08 14:40:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2021-10-08 14:40:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 4968. [2021-10-08 14:40:34,515 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) [2021-10-08 14:40:34,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 14774 transitions. [2021-10-08 14:40:34,527 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 14774 transitions. Word has length 38 [2021-10-08 14:40:34,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:34,527 INFO L470 AbstractCegarLoop]: Abstraction has 4968 states and 14774 transitions. [2021-10-08 14:40:34,528 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) [2021-10-08 14:40:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 14774 transitions. [2021-10-08 14:40:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:34,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:34,536 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] [2021-10-08 14:40:34,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-08 14:40:34,537 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)] === [2021-10-08 14:40:34,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:34,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1500806227, now seen corresponding path program 59 times [2021-10-08 14:40:34,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:34,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887637265] [2021-10-08 14:40:34,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:34,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:34,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:34,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887637265] [2021-10-08 14:40:34,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887637265] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:34,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:34,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:34,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905211826] [2021-10-08 14:40:34,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:34,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:34,631 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) [2021-10-08 14:40:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:35,570 INFO L93 Difference]: Finished difference Result 7604 states and 22051 transitions. [2021-10-08 14:40:35,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:40:35,571 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 [2021-10-08 14:40:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:35,586 INFO L225 Difference]: With dead ends: 7604 [2021-10-08 14:40:35,587 INFO L226 Difference]: Without dead ends: 7596 [2021-10-08 14:40:35,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 353.6ms TimeCoverageRelationStatistics Valid=319, Invalid=1087, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:40:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7596 states. [2021-10-08 14:40:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7596 to 4966. [2021-10-08 14:40:35,676 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) [2021-10-08 14:40:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4966 states to 4966 states and 14769 transitions. [2021-10-08 14:40:35,688 INFO L78 Accepts]: Start accepts. Automaton has 4966 states and 14769 transitions. Word has length 38 [2021-10-08 14:40:35,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:35,689 INFO L470 AbstractCegarLoop]: Abstraction has 4966 states and 14769 transitions. [2021-10-08 14:40:35,689 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) [2021-10-08 14:40:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4966 states and 14769 transitions. [2021-10-08 14:40:35,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:35,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:35,696 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:35,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-08 14:40:35,697 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)] === [2021-10-08 14:40:35,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:35,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1664448531, now seen corresponding path program 60 times [2021-10-08 14:40:35,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:35,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524993932] [2021-10-08 14:40:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:35,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:35,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:35,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524993932] [2021-10-08 14:40:35,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524993932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:35,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:35,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:35,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403634340] [2021-10-08 14:40:35,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:35,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:35,814 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) [2021-10-08 14:40:36,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:36,718 INFO L93 Difference]: Finished difference Result 7288 states and 21201 transitions. [2021-10-08 14:40:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 14:40:36,719 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 [2021-10-08 14:40:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:36,734 INFO L225 Difference]: With dead ends: 7288 [2021-10-08 14:40:36,734 INFO L226 Difference]: Without dead ends: 7256 [2021-10-08 14:40:36,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 288.1ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:40:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7256 states. [2021-10-08 14:40:36,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7256 to 4960. [2021-10-08 14:40:36,821 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) [2021-10-08 14:40:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 14744 transitions. [2021-10-08 14:40:36,833 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 14744 transitions. Word has length 38 [2021-10-08 14:40:36,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:36,833 INFO L470 AbstractCegarLoop]: Abstraction has 4960 states and 14744 transitions. [2021-10-08 14:40:36,833 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) [2021-10-08 14:40:36,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 14744 transitions. [2021-10-08 14:40:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:36,841 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:36,841 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:36,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-10-08 14:40:36,842 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)] === [2021-10-08 14:40:36,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:36,842 INFO L82 PathProgramCache]: Analyzing trace with hash 990061321, now seen corresponding path program 61 times [2021-10-08 14:40:36,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:36,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887407519] [2021-10-08 14:40:36,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:36,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:36,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:36,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887407519] [2021-10-08 14:40:36,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887407519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:36,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:36,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:36,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223184282] [2021-10-08 14:40:36,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:36,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:36,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:36,969 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) [2021-10-08 14:40:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:38,095 INFO L93 Difference]: Finished difference Result 7550 states and 21919 transitions. [2021-10-08 14:40:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:40:38,095 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 [2021-10-08 14:40:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:38,112 INFO L225 Difference]: With dead ends: 7550 [2021-10-08 14:40:38,112 INFO L226 Difference]: Without dead ends: 7526 [2021-10-08 14:40:38,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 402.9ms TimeCoverageRelationStatistics Valid=327, Invalid=1233, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 14:40:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7526 states. [2021-10-08 14:40:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7526 to 4950. [2021-10-08 14:40:38,201 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) [2021-10-08 14:40:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 14727 transitions. [2021-10-08 14:40:38,214 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 14727 transitions. Word has length 38 [2021-10-08 14:40:38,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:38,214 INFO L470 AbstractCegarLoop]: Abstraction has 4950 states and 14727 transitions. [2021-10-08 14:40:38,214 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) [2021-10-08 14:40:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 14727 transitions. [2021-10-08 14:40:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:38,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:38,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:38,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-10-08 14:40:38,223 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)] === [2021-10-08 14:40:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash -83429617, now seen corresponding path program 62 times [2021-10-08 14:40:38,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:38,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000904412] [2021-10-08 14:40:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:38,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:38,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:38,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:38,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000904412] [2021-10-08 14:40:38,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000904412] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:38,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:38,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:38,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97982683] [2021-10-08 14:40:38,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:38,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:38,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:38,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:38,312 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) [2021-10-08 14:40:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:38,829 INFO L93 Difference]: Finished difference Result 6964 states and 20178 transitions. [2021-10-08 14:40:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:40:38,830 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 [2021-10-08 14:40:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:38,844 INFO L225 Difference]: With dead ends: 6964 [2021-10-08 14:40:38,844 INFO L226 Difference]: Without dead ends: 6742 [2021-10-08 14:40:38,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 162.3ms TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:40:38,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6742 states. [2021-10-08 14:40:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6742 to 5028. [2021-10-08 14:40:38,944 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) [2021-10-08 14:40:38,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5028 states to 5028 states and 14972 transitions. [2021-10-08 14:40:38,959 INFO L78 Accepts]: Start accepts. Automaton has 5028 states and 14972 transitions. Word has length 38 [2021-10-08 14:40:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:38,960 INFO L470 AbstractCegarLoop]: Abstraction has 5028 states and 14972 transitions. [2021-10-08 14:40:38,960 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) [2021-10-08 14:40:38,960 INFO L276 IsEmpty]: Start isEmpty. Operand 5028 states and 14972 transitions. [2021-10-08 14:40:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:38,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:38,968 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:38,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-10-08 14:40:38,969 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)] === [2021-10-08 14:40:38,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:38,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1212463843, now seen corresponding path program 63 times [2021-10-08 14:40:38,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:38,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110253144] [2021-10-08 14:40:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:38,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:39,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:39,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:39,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110253144] [2021-10-08 14:40:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110253144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:39,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:39,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:39,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197337775] [2021-10-08 14:40:39,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:39,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:39,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:39,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:39,098 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) [2021-10-08 14:40:40,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:40,027 INFO L93 Difference]: Finished difference Result 7034 states and 20305 transitions. [2021-10-08 14:40:40,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 14:40:40,027 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 [2021-10-08 14:40:40,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:40,042 INFO L225 Difference]: With dead ends: 7034 [2021-10-08 14:40:40,042 INFO L226 Difference]: Without dead ends: 6990 [2021-10-08 14:40:40,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 399.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:40:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6990 states. [2021-10-08 14:40:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6990 to 5048. [2021-10-08 14:40:40,129 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) [2021-10-08 14:40:40,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5048 states to 5048 states and 15006 transitions. [2021-10-08 14:40:40,142 INFO L78 Accepts]: Start accepts. Automaton has 5048 states and 15006 transitions. Word has length 38 [2021-10-08 14:40:40,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:40,143 INFO L470 AbstractCegarLoop]: Abstraction has 5048 states and 15006 transitions. [2021-10-08 14:40:40,143 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) [2021-10-08 14:40:40,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5048 states and 15006 transitions. [2021-10-08 14:40:40,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:40,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:40,152 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:40,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-10-08 14:40:40,152 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)] === [2021-10-08 14:40:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1719528207, now seen corresponding path program 64 times [2021-10-08 14:40:40,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:40,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668127440] [2021-10-08 14:40:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:40,153 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:40,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:40,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668127440] [2021-10-08 14:40:40,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668127440] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:40,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:40,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:40,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477810565] [2021-10-08 14:40:40,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:40,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:40,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:40,265 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) [2021-10-08 14:40:41,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:41,072 INFO L93 Difference]: Finished difference Result 7488 states and 21580 transitions. [2021-10-08 14:40:41,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:40:41,072 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 [2021-10-08 14:40:41,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:41,089 INFO L225 Difference]: With dead ends: 7488 [2021-10-08 14:40:41,090 INFO L226 Difference]: Without dead ends: 7472 [2021-10-08 14:40:41,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 282.5ms TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 14:40:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7472 states. [2021-10-08 14:40:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7472 to 5058. [2021-10-08 14:40:41,187 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) [2021-10-08 14:40:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5058 states to 5058 states and 15025 transitions. [2021-10-08 14:40:41,200 INFO L78 Accepts]: Start accepts. Automaton has 5058 states and 15025 transitions. Word has length 38 [2021-10-08 14:40:41,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:41,200 INFO L470 AbstractCegarLoop]: Abstraction has 5058 states and 15025 transitions. [2021-10-08 14:40:41,200 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) [2021-10-08 14:40:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5058 states and 15025 transitions. [2021-10-08 14:40:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:41,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:41,209 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:41,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-10-08 14:40:41,209 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)] === [2021-10-08 14:40:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:41,210 INFO L82 PathProgramCache]: Analyzing trace with hash 648714371, now seen corresponding path program 65 times [2021-10-08 14:40:41,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:41,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471888660] [2021-10-08 14:40:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:41,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:41,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:41,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471888660] [2021-10-08 14:40:41,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471888660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:41,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:41,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:41,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862865236] [2021-10-08 14:40:41,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:41,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:41,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:41,332 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) [2021-10-08 14:40:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:42,434 INFO L93 Difference]: Finished difference Result 7886 states and 22592 transitions. [2021-10-08 14:40:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 14:40:42,435 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 [2021-10-08 14:40:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:42,451 INFO L225 Difference]: With dead ends: 7886 [2021-10-08 14:40:42,451 INFO L226 Difference]: Without dead ends: 7830 [2021-10-08 14:40:42,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 421.5ms TimeCoverageRelationStatistics Valid=422, Invalid=1470, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 14:40:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7830 states. [2021-10-08 14:40:42,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7830 to 5014. [2021-10-08 14:40:42,545 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) [2021-10-08 14:40:42,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 14927 transitions. [2021-10-08 14:40:42,558 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 14927 transitions. Word has length 38 [2021-10-08 14:40:42,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:42,558 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 14927 transitions. [2021-10-08 14:40:42,558 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) [2021-10-08 14:40:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 14927 transitions. [2021-10-08 14:40:42,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:42,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:42,566 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] [2021-10-08 14:40:42,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-10-08 14:40:42,567 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)] === [2021-10-08 14:40:42,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1394968557, now seen corresponding path program 66 times [2021-10-08 14:40:42,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:42,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004589133] [2021-10-08 14:40:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:42,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:42,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:42,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004589133] [2021-10-08 14:40:42,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004589133] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:42,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:42,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:42,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499722087] [2021-10-08 14:40:42,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:42,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:42,701 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) [2021-10-08 14:40:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:43,342 INFO L93 Difference]: Finished difference Result 6512 states and 19102 transitions. [2021-10-08 14:40:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:40:43,343 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 [2021-10-08 14:40:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:43,359 INFO L225 Difference]: With dead ends: 6512 [2021-10-08 14:40:43,359 INFO L226 Difference]: Without dead ends: 6496 [2021-10-08 14:40:43,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 231.8ms TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:40:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6496 states. [2021-10-08 14:40:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6496 to 5012. [2021-10-08 14:40:43,441 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) [2021-10-08 14:40:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 14922 transitions. [2021-10-08 14:40:43,454 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 14922 transitions. Word has length 38 [2021-10-08 14:40:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:43,454 INFO L470 AbstractCegarLoop]: Abstraction has 5012 states and 14922 transitions. [2021-10-08 14:40:43,454 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) [2021-10-08 14:40:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 14922 transitions. [2021-10-08 14:40:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:43,462 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:43,462 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:43,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-10-08 14:40:43,463 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)] === [2021-10-08 14:40:43,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:43,463 INFO L82 PathProgramCache]: Analyzing trace with hash 721986531, now seen corresponding path program 67 times [2021-10-08 14:40:43,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:43,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006412384] [2021-10-08 14:40:43,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:43,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:43,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:43,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006412384] [2021-10-08 14:40:43,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006412384] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:43,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:43,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:43,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104106216] [2021-10-08 14:40:43,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:43,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:43,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:43,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:43,616 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) [2021-10-08 14:40:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:44,656 INFO L93 Difference]: Finished difference Result 7258 states and 20843 transitions. [2021-10-08 14:40:44,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:40:44,657 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 [2021-10-08 14:40:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:44,675 INFO L225 Difference]: With dead ends: 7258 [2021-10-08 14:40:44,676 INFO L226 Difference]: Without dead ends: 7188 [2021-10-08 14:40:44,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 397.7ms TimeCoverageRelationStatistics Valid=329, Invalid=1153, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 14:40:44,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2021-10-08 14:40:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5114. [2021-10-08 14:40:44,781 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) [2021-10-08 14:40:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 15190 transitions. [2021-10-08 14:40:44,794 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 15190 transitions. Word has length 38 [2021-10-08 14:40:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:44,794 INFO L470 AbstractCegarLoop]: Abstraction has 5114 states and 15190 transitions. [2021-10-08 14:40:44,794 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) [2021-10-08 14:40:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 15190 transitions. [2021-10-08 14:40:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:44,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:44,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:44,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-10-08 14:40:44,803 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)] === [2021-10-08 14:40:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:44,804 INFO L82 PathProgramCache]: Analyzing trace with hash -971475479, now seen corresponding path program 68 times [2021-10-08 14:40:44,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:44,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293093800] [2021-10-08 14:40:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:44,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:44,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:44,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293093800] [2021-10-08 14:40:44,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293093800] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:44,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:44,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:44,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388938611] [2021-10-08 14:40:44,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:44,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:44,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:44,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:44,928 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) [2021-10-08 14:40:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:45,782 INFO L93 Difference]: Finished difference Result 7508 states and 21592 transitions. [2021-10-08 14:40:45,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:40:45,783 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 [2021-10-08 14:40:45,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:45,799 INFO L225 Difference]: With dead ends: 7508 [2021-10-08 14:40:45,799 INFO L226 Difference]: Without dead ends: 7464 [2021-10-08 14:40:45,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 300.0ms TimeCoverageRelationStatistics Valid=275, Invalid=915, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 14:40:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7464 states. [2021-10-08 14:40:45,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7464 to 5140. [2021-10-08 14:40:45,893 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) [2021-10-08 14:40:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5140 states to 5140 states and 15255 transitions. [2021-10-08 14:40:45,906 INFO L78 Accepts]: Start accepts. Automaton has 5140 states and 15255 transitions. Word has length 38 [2021-10-08 14:40:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:45,906 INFO L470 AbstractCegarLoop]: Abstraction has 5140 states and 15255 transitions. [2021-10-08 14:40:45,906 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) [2021-10-08 14:40:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5140 states and 15255 transitions. [2021-10-08 14:40:45,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:45,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:45,914 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] [2021-10-08 14:40:45,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-10-08 14:40:45,915 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)] === [2021-10-08 14:40:45,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:45,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1645862689, now seen corresponding path program 69 times [2021-10-08 14:40:45,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:45,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49114618] [2021-10-08 14:40:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:45,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:46,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:46,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49114618] [2021-10-08 14:40:46,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49114618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:46,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:46,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:46,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858268696] [2021-10-08 14:40:46,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:46,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:46,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:46,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:46,045 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) [2021-10-08 14:40:47,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:47,259 INFO L93 Difference]: Finished difference Result 7920 states and 22623 transitions. [2021-10-08 14:40:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 14:40:47,259 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 [2021-10-08 14:40:47,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:47,276 INFO L225 Difference]: With dead ends: 7920 [2021-10-08 14:40:47,277 INFO L226 Difference]: Without dead ends: 7838 [2021-10-08 14:40:47,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 477.2ms TimeCoverageRelationStatistics Valid=430, Invalid=1640, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 14:40:47,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2021-10-08 14:40:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 5090. [2021-10-08 14:40:47,412 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) [2021-10-08 14:40:47,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5090 states to 5090 states and 15129 transitions. [2021-10-08 14:40:47,425 INFO L78 Accepts]: Start accepts. Automaton has 5090 states and 15129 transitions. Word has length 38 [2021-10-08 14:40:47,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:47,425 INFO L470 AbstractCegarLoop]: Abstraction has 5090 states and 15129 transitions. [2021-10-08 14:40:47,426 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) [2021-10-08 14:40:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5090 states and 15129 transitions. [2021-10-08 14:40:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:47,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:47,434 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] [2021-10-08 14:40:47,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-10-08 14:40:47,434 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)] === [2021-10-08 14:40:47,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1715070647, now seen corresponding path program 70 times [2021-10-08 14:40:47,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:47,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167017344] [2021-10-08 14:40:47,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:47,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:47,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:47,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167017344] [2021-10-08 14:40:47,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167017344] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:47,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:47,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:47,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540991724] [2021-10-08 14:40:47,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:47,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:47,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:47,567 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) [2021-10-08 14:40:48,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:48,298 INFO L93 Difference]: Finished difference Result 6536 states and 19108 transitions. [2021-10-08 14:40:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 14:40:48,299 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 [2021-10-08 14:40:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:48,313 INFO L225 Difference]: With dead ends: 6536 [2021-10-08 14:40:48,314 INFO L226 Difference]: Without dead ends: 6506 [2021-10-08 14:40:48,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 270.2ms TimeCoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:40:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6506 states. [2021-10-08 14:40:48,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6506 to 5074. [2021-10-08 14:40:48,397 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) [2021-10-08 14:40:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 15102 transitions. [2021-10-08 14:40:48,409 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 15102 transitions. Word has length 38 [2021-10-08 14:40:48,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:48,409 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 15102 transitions. [2021-10-08 14:40:48,409 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) [2021-10-08 14:40:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 15102 transitions. [2021-10-08 14:40:48,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:48,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:48,418 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:48,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-10-08 14:40:48,419 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)] === [2021-10-08 14:40:48,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:48,420 INFO L82 PathProgramCache]: Analyzing trace with hash -799932749, now seen corresponding path program 71 times [2021-10-08 14:40:48,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:48,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223518910] [2021-10-08 14:40:48,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:48,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:48,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:48,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223518910] [2021-10-08 14:40:48,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223518910] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:48,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:48,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:48,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164914196] [2021-10-08 14:40:48,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:48,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:48,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:48,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:48,503 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) [2021-10-08 14:40:49,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:49,055 INFO L93 Difference]: Finished difference Result 6956 states and 19737 transitions. [2021-10-08 14:40:49,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:40:49,056 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 [2021-10-08 14:40:49,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:49,072 INFO L225 Difference]: With dead ends: 6956 [2021-10-08 14:40:49,072 INFO L226 Difference]: Without dead ends: 6944 [2021-10-08 14:40:49,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:40:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2021-10-08 14:40:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 5086. [2021-10-08 14:40:49,178 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) [2021-10-08 14:40:49,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 15139 transitions. [2021-10-08 14:40:49,193 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 15139 transitions. Word has length 38 [2021-10-08 14:40:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:49,193 INFO L470 AbstractCegarLoop]: Abstraction has 5086 states and 15139 transitions. [2021-10-08 14:40:49,194 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) [2021-10-08 14:40:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 15139 transitions. [2021-10-08 14:40:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:49,203 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:49,204 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] [2021-10-08 14:40:49,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-10-08 14:40:49,204 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)] === [2021-10-08 14:40:49,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:49,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1244378183, now seen corresponding path program 72 times [2021-10-08 14:40:49,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:49,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688376636] [2021-10-08 14:40:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:49,206 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:49,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:49,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:49,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688376636] [2021-10-08 14:40:49,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688376636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:49,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:49,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:49,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230495850] [2021-10-08 14:40:49,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:49,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:49,319 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) [2021-10-08 14:40:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:50,086 INFO L93 Difference]: Finished difference Result 6906 states and 19609 transitions. [2021-10-08 14:40:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:40:50,087 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 [2021-10-08 14:40:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:50,101 INFO L225 Difference]: With dead ends: 6906 [2021-10-08 14:40:50,101 INFO L226 Difference]: Without dead ends: 6834 [2021-10-08 14:40:50,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 212.6ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:40:50,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2021-10-08 14:40:50,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 5066. [2021-10-08 14:40:50,189 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) [2021-10-08 14:40:50,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 15080 transitions. [2021-10-08 14:40:50,202 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 15080 transitions. Word has length 38 [2021-10-08 14:40:50,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:50,202 INFO L470 AbstractCegarLoop]: Abstraction has 5066 states and 15080 transitions. [2021-10-08 14:40:50,203 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) [2021-10-08 14:40:50,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 15080 transitions. [2021-10-08 14:40:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:50,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:50,211 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:50,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-10-08 14:40:50,211 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)] === [2021-10-08 14:40:50,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1162564555, now seen corresponding path program 73 times [2021-10-08 14:40:50,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:50,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558742568] [2021-10-08 14:40:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:50,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:50,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:50,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:50,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558742568] [2021-10-08 14:40:50,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558742568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:50,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:50,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:50,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144612706] [2021-10-08 14:40:50,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:50,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:50,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:50,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:50,294 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) [2021-10-08 14:40:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:50,831 INFO L93 Difference]: Finished difference Result 6848 states and 19601 transitions. [2021-10-08 14:40:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:40:50,831 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 [2021-10-08 14:40:50,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:50,845 INFO L225 Difference]: With dead ends: 6848 [2021-10-08 14:40:50,845 INFO L226 Difference]: Without dead ends: 6836 [2021-10-08 14:40:50,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 161.2ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:40:50,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6836 states. [2021-10-08 14:40:50,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6836 to 5056. [2021-10-08 14:40:50,923 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) [2021-10-08 14:40:50,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 15043 transitions. [2021-10-08 14:40:50,935 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 15043 transitions. Word has length 38 [2021-10-08 14:40:50,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:50,935 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 15043 transitions. [2021-10-08 14:40:50,935 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) [2021-10-08 14:40:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 15043 transitions. [2021-10-08 14:40:50,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:50,943 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:50,943 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:50,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-10-08 14:40:50,943 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)] === [2021-10-08 14:40:50,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:50,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1297716341, now seen corresponding path program 74 times [2021-10-08 14:40:50,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:50,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691191851] [2021-10-08 14:40:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:50,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:51,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:51,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691191851] [2021-10-08 14:40:51,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691191851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:51,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:51,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:51,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470250643] [2021-10-08 14:40:51,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:51,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:51,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:51,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:51,034 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) [2021-10-08 14:40:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:51,836 INFO L93 Difference]: Finished difference Result 7178 states and 20348 transitions. [2021-10-08 14:40:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:40:51,836 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 [2021-10-08 14:40:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:51,850 INFO L225 Difference]: With dead ends: 7178 [2021-10-08 14:40:51,850 INFO L226 Difference]: Without dead ends: 7170 [2021-10-08 14:40:51,850 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 273.9ms TimeCoverageRelationStatistics Valid=228, Invalid=764, Unknown=0, NotChecked=0, Total=992 [2021-10-08 14:40:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-10-08 14:40:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 5052. [2021-10-08 14:40:51,937 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) [2021-10-08 14:40:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 15033 transitions. [2021-10-08 14:40:51,949 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 15033 transitions. Word has length 38 [2021-10-08 14:40:51,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:51,949 INFO L470 AbstractCegarLoop]: Abstraction has 5052 states and 15033 transitions. [2021-10-08 14:40:51,949 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) [2021-10-08 14:40:51,949 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 15033 transitions. [2021-10-08 14:40:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:51,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:51,957 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:51,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-10-08 14:40:51,957 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)] === [2021-10-08 14:40:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:51,958 INFO L82 PathProgramCache]: Analyzing trace with hash 635709721, now seen corresponding path program 75 times [2021-10-08 14:40:51,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:51,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055219972] [2021-10-08 14:40:51,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:51,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:52,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:52,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055219972] [2021-10-08 14:40:52,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055219972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:52,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:52,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:40:52,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954429696] [2021-10-08 14:40:52,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:40:52,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:52,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:40:52,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:40:52,080 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) [2021-10-08 14:40:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:52,825 INFO L93 Difference]: Finished difference Result 6744 states and 19296 transitions. [2021-10-08 14:40:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:40:52,825 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 [2021-10-08 14:40:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:52,841 INFO L225 Difference]: With dead ends: 6744 [2021-10-08 14:40:52,841 INFO L226 Difference]: Without dead ends: 6676 [2021-10-08 14:40:52,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:40:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6676 states. [2021-10-08 14:40:52,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6676 to 4992. [2021-10-08 14:40:52,935 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) [2021-10-08 14:40:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4992 states to 4992 states and 14837 transitions. [2021-10-08 14:40:52,947 INFO L78 Accepts]: Start accepts. Automaton has 4992 states and 14837 transitions. Word has length 38 [2021-10-08 14:40:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:52,948 INFO L470 AbstractCegarLoop]: Abstraction has 4992 states and 14837 transitions. [2021-10-08 14:40:52,948 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) [2021-10-08 14:40:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 4992 states and 14837 transitions. [2021-10-08 14:40:52,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:52,955 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:52,956 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:52,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-10-08 14:40:52,956 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)] === [2021-10-08 14:40:52,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:52,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1051679685, now seen corresponding path program 76 times [2021-10-08 14:40:52,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:52,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48512862] [2021-10-08 14:40:52,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:52,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:53,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:53,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48512862] [2021-10-08 14:40:53,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48512862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:53,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:53,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:53,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082754745] [2021-10-08 14:40:53,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:53,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:53,084 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) [2021-10-08 14:40:54,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:54,180 INFO L93 Difference]: Finished difference Result 6882 states and 19542 transitions. [2021-10-08 14:40:54,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:40:54,180 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 [2021-10-08 14:40:54,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:54,197 INFO L225 Difference]: With dead ends: 6882 [2021-10-08 14:40:54,198 INFO L226 Difference]: Without dead ends: 6830 [2021-10-08 14:40:54,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 348.9ms TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:40:54,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6830 states. [2021-10-08 14:40:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6830 to 4964. [2021-10-08 14:40:54,332 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) [2021-10-08 14:40:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4964 states to 4964 states and 14785 transitions. [2021-10-08 14:40:54,346 INFO L78 Accepts]: Start accepts. Automaton has 4964 states and 14785 transitions. Word has length 38 [2021-10-08 14:40:54,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:54,346 INFO L470 AbstractCegarLoop]: Abstraction has 4964 states and 14785 transitions. [2021-10-08 14:40:54,346 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) [2021-10-08 14:40:54,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4964 states and 14785 transitions. [2021-10-08 14:40:54,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:54,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:54,354 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] [2021-10-08 14:40:54,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-10-08 14:40:54,355 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)] === [2021-10-08 14:40:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:54,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1985279637, now seen corresponding path program 77 times [2021-10-08 14:40:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:54,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001247610] [2021-10-08 14:40:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:54,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:54,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:54,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:54,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001247610] [2021-10-08 14:40:54,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001247610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:54,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:54,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:54,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110562443] [2021-10-08 14:40:54,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:54,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:54,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:54,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:54,430 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) [2021-10-08 14:40:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:55,054 INFO L93 Difference]: Finished difference Result 6454 states and 18411 transitions. [2021-10-08 14:40:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:40:55,054 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 [2021-10-08 14:40:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:55,066 INFO L225 Difference]: With dead ends: 6454 [2021-10-08 14:40:55,066 INFO L226 Difference]: Without dead ends: 6168 [2021-10-08 14:40:55,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 177.0ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:40:55,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2021-10-08 14:40:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 5000. [2021-10-08 14:40:55,145 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) [2021-10-08 14:40:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5000 states to 5000 states and 14851 transitions. [2021-10-08 14:40:55,159 INFO L78 Accepts]: Start accepts. Automaton has 5000 states and 14851 transitions. Word has length 38 [2021-10-08 14:40:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:55,160 INFO L470 AbstractCegarLoop]: Abstraction has 5000 states and 14851 transitions. [2021-10-08 14:40:55,160 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) [2021-10-08 14:40:55,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5000 states and 14851 transitions. [2021-10-08 14:40:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:55,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:55,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:55,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-10-08 14:40:55,171 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)] === [2021-10-08 14:40:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:55,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1254738539, now seen corresponding path program 78 times [2021-10-08 14:40:55,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:55,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095250843] [2021-10-08 14:40:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:55,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:55,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:55,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095250843] [2021-10-08 14:40:55,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095250843] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:55,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:55,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:40:55,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817174507] [2021-10-08 14:40:55,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:40:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:40:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:40:55,314 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) [2021-10-08 14:40:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:56,372 INFO L93 Difference]: Finished difference Result 6860 states and 19780 transitions. [2021-10-08 14:40:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:40:56,372 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 [2021-10-08 14:40:56,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:56,394 INFO L225 Difference]: With dead ends: 6860 [2021-10-08 14:40:56,395 INFO L226 Difference]: Without dead ends: 6816 [2021-10-08 14:40:56,395 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 421.9ms TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 14:40:56,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6816 states. [2021-10-08 14:40:56,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6816 to 5008. [2021-10-08 14:40:56,524 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) [2021-10-08 14:40:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5008 states to 5008 states and 14883 transitions. [2021-10-08 14:40:56,537 INFO L78 Accepts]: Start accepts. Automaton has 5008 states and 14883 transitions. Word has length 38 [2021-10-08 14:40:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:56,538 INFO L470 AbstractCegarLoop]: Abstraction has 5008 states and 14883 transitions. [2021-10-08 14:40:56,538 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) [2021-10-08 14:40:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5008 states and 14883 transitions. [2021-10-08 14:40:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:56,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:56,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:56,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-10-08 14:40:56,549 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)] === [2021-10-08 14:40:56,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1007751455, now seen corresponding path program 79 times [2021-10-08 14:40:56,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:56,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379699338] [2021-10-08 14:40:56,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:56,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:56,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:56,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:56,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379699338] [2021-10-08 14:40:56,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379699338] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:56,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:56,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:40:56,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342491916] [2021-10-08 14:40:56,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:40:56,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:40:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:40:56,621 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) [2021-10-08 14:40:57,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:57,082 INFO L93 Difference]: Finished difference Result 5914 states and 16890 transitions. [2021-10-08 14:40:57,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:40:57,082 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 [2021-10-08 14:40:57,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:57,093 INFO L225 Difference]: With dead ends: 5914 [2021-10-08 14:40:57,093 INFO L226 Difference]: Without dead ends: 5834 [2021-10-08 14:40:57,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 153.8ms TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:40:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-10-08 14:40:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 5024. [2021-10-08 14:40:57,168 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) [2021-10-08 14:40:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5024 states to 5024 states and 14848 transitions. [2021-10-08 14:40:57,182 INFO L78 Accepts]: Start accepts. Automaton has 5024 states and 14848 transitions. Word has length 38 [2021-10-08 14:40:57,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:57,182 INFO L470 AbstractCegarLoop]: Abstraction has 5024 states and 14848 transitions. [2021-10-08 14:40:57,182 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) [2021-10-08 14:40:57,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5024 states and 14848 transitions. [2021-10-08 14:40:57,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:57,191 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:57,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:57,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-10-08 14:40:57,192 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)] === [2021-10-08 14:40:57,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:57,194 INFO L82 PathProgramCache]: Analyzing trace with hash -2108986949, now seen corresponding path program 80 times [2021-10-08 14:40:57,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:57,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143955896] [2021-10-08 14:40:57,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:57,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:57,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:57,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143955896] [2021-10-08 14:40:57,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143955896] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:57,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:57,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:40:57,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028945528] [2021-10-08 14:40:57,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:40:57,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:40:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:40:57,301 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) [2021-10-08 14:40:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:58,442 INFO L93 Difference]: Finished difference Result 7126 states and 20298 transitions. [2021-10-08 14:40:58,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 14:40:58,443 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 [2021-10-08 14:40:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:58,457 INFO L225 Difference]: With dead ends: 7126 [2021-10-08 14:40:58,458 INFO L226 Difference]: Without dead ends: 7034 [2021-10-08 14:40:58,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 426.7ms TimeCoverageRelationStatistics Valid=356, Invalid=1284, Unknown=0, NotChecked=0, Total=1640 [2021-10-08 14:40:58,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7034 states. [2021-10-08 14:40:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7034 to 5022. [2021-10-08 14:40:58,565 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) [2021-10-08 14:40:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 14866 transitions. [2021-10-08 14:40:58,578 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 14866 transitions. Word has length 38 [2021-10-08 14:40:58,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:58,578 INFO L470 AbstractCegarLoop]: Abstraction has 5022 states and 14866 transitions. [2021-10-08 14:40:58,579 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) [2021-10-08 14:40:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 14866 transitions. [2021-10-08 14:40:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:58,589 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:58,590 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] [2021-10-08 14:40:58,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-10-08 14:40:58,590 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)] === [2021-10-08 14:40:58,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:58,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1134162117, now seen corresponding path program 81 times [2021-10-08 14:40:58,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:58,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850139301] [2021-10-08 14:40:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:58,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:58,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:58,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850139301] [2021-10-08 14:40:58,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850139301] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:58,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:58,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:58,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337955982] [2021-10-08 14:40:58,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:58,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:58,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:58,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:58,695 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) [2021-10-08 14:40:59,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:40:59,280 INFO L93 Difference]: Finished difference Result 5808 states and 16853 transitions. [2021-10-08 14:40:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:40:59,281 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 [2021-10-08 14:40:59,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:40:59,299 INFO L225 Difference]: With dead ends: 5808 [2021-10-08 14:40:59,299 INFO L226 Difference]: Without dead ends: 5532 [2021-10-08 14:40:59,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:40:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-10-08 14:40:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 5122. [2021-10-08 14:40:59,423 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) [2021-10-08 14:40:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5122 states to 5122 states and 15117 transitions. [2021-10-08 14:40:59,445 INFO L78 Accepts]: Start accepts. Automaton has 5122 states and 15117 transitions. Word has length 38 [2021-10-08 14:40:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:40:59,445 INFO L470 AbstractCegarLoop]: Abstraction has 5122 states and 15117 transitions. [2021-10-08 14:40:59,445 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) [2021-10-08 14:40:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 5122 states and 15117 transitions. [2021-10-08 14:40:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:40:59,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:40:59,458 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:40:59,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-10-08 14:40:59,460 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)] === [2021-10-08 14:40:59,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:40:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash -746729101, now seen corresponding path program 82 times [2021-10-08 14:40:59,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:40:59,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79839745] [2021-10-08 14:40:59,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:40:59,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:40:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:40:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:40:59,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:40:59,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79839745] [2021-10-08 14:40:59,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79839745] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:40:59,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:40:59,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:40:59,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753697807] [2021-10-08 14:40:59,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:40:59,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:40:59,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:40:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:40:59,631 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) [2021-10-08 14:41:00,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:00,301 INFO L93 Difference]: Finished difference Result 7190 states and 20377 transitions. [2021-10-08 14:41:00,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:41:00,302 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 [2021-10-08 14:41:00,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:00,317 INFO L225 Difference]: With dead ends: 7190 [2021-10-08 14:41:00,317 INFO L226 Difference]: Without dead ends: 7174 [2021-10-08 14:41:00,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 234.9ms TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:41:00,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2021-10-08 14:41:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 5126. [2021-10-08 14:41:00,402 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) [2021-10-08 14:41:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5126 states to 5126 states and 15119 transitions. [2021-10-08 14:41:00,414 INFO L78 Accepts]: Start accepts. Automaton has 5126 states and 15119 transitions. Word has length 38 [2021-10-08 14:41:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:00,414 INFO L470 AbstractCegarLoop]: Abstraction has 5126 states and 15119 transitions. [2021-10-08 14:41:00,414 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) [2021-10-08 14:41:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 5126 states and 15119 transitions. [2021-10-08 14:41:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:00,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:00,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:00,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-10-08 14:41:00,422 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)] === [2021-10-08 14:41:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:00,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1713551795, now seen corresponding path program 83 times [2021-10-08 14:41:00,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:00,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48837279] [2021-10-08 14:41:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:00,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:00,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:00,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48837279] [2021-10-08 14:41:00,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48837279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:00,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:00,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:00,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375207536] [2021-10-08 14:41:00,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:00,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:00,535 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) [2021-10-08 14:41:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:01,567 INFO L93 Difference]: Finished difference Result 7572 states and 21274 transitions. [2021-10-08 14:41:01,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 14:41:01,568 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 [2021-10-08 14:41:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:01,582 INFO L225 Difference]: With dead ends: 7572 [2021-10-08 14:41:01,583 INFO L226 Difference]: Without dead ends: 7540 [2021-10-08 14:41:01,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 358.6ms TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:41:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7540 states. [2021-10-08 14:41:01,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7540 to 5104. [2021-10-08 14:41:01,669 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) [2021-10-08 14:41:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5104 states to 5104 states and 15054 transitions. [2021-10-08 14:41:01,681 INFO L78 Accepts]: Start accepts. Automaton has 5104 states and 15054 transitions. Word has length 38 [2021-10-08 14:41:01,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:01,681 INFO L470 AbstractCegarLoop]: Abstraction has 5104 states and 15054 transitions. [2021-10-08 14:41:01,707 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) [2021-10-08 14:41:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5104 states and 15054 transitions. [2021-10-08 14:41:01,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:01,714 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:01,714 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:01,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-10-08 14:41:01,715 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)] === [2021-10-08 14:41:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash 719238175, now seen corresponding path program 84 times [2021-10-08 14:41:01,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:01,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924645551] [2021-10-08 14:41:01,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:01,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:01,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:01,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:01,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924645551] [2021-10-08 14:41:01,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924645551] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:01,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:01,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:01,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137175711] [2021-10-08 14:41:01,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:01,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:01,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:01,917 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) [2021-10-08 14:41:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:02,735 INFO L93 Difference]: Finished difference Result 6310 states and 17929 transitions. [2021-10-08 14:41:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:41:02,735 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 [2021-10-08 14:41:02,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:02,748 INFO L225 Difference]: With dead ends: 6310 [2021-10-08 14:41:02,748 INFO L226 Difference]: Without dead ends: 6258 [2021-10-08 14:41:02,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 364.3ms TimeCoverageRelationStatistics Valid=222, Invalid=648, Unknown=0, NotChecked=0, Total=870 [2021-10-08 14:41:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-10-08 14:41:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 5074. [2021-10-08 14:41:02,830 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) [2021-10-08 14:41:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5074 states to 5074 states and 14967 transitions. [2021-10-08 14:41:02,842 INFO L78 Accepts]: Start accepts. Automaton has 5074 states and 14967 transitions. Word has length 38 [2021-10-08 14:41:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:02,843 INFO L470 AbstractCegarLoop]: Abstraction has 5074 states and 14967 transitions. [2021-10-08 14:41:02,843 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) [2021-10-08 14:41:02,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5074 states and 14967 transitions. [2021-10-08 14:41:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:02,852 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:02,852 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:02,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-10-08 14:41:02,852 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)] === [2021-10-08 14:41:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1640336809, now seen corresponding path program 85 times [2021-10-08 14:41:02,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:02,853 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812000990] [2021-10-08 14:41:02,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:02,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:02,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:02,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812000990] [2021-10-08 14:41:02,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812000990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:02,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:02,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:02,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969885764] [2021-10-08 14:41:02,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:02,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:02,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:02,946 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) [2021-10-08 14:41:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:03,918 INFO L93 Difference]: Finished difference Result 6302 states and 17885 transitions. [2021-10-08 14:41:03,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:41:03,918 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 [2021-10-08 14:41:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:03,932 INFO L225 Difference]: With dead ends: 6302 [2021-10-08 14:41:03,932 INFO L226 Difference]: Without dead ends: 6258 [2021-10-08 14:41:03,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 389.3ms TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:41:03,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6258 states. [2021-10-08 14:41:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6258 to 4968. [2021-10-08 14:41:04,019 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) [2021-10-08 14:41:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4968 states to 4968 states and 14722 transitions. [2021-10-08 14:41:04,031 INFO L78 Accepts]: Start accepts. Automaton has 4968 states and 14722 transitions. Word has length 38 [2021-10-08 14:41:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:04,032 INFO L470 AbstractCegarLoop]: Abstraction has 4968 states and 14722 transitions. [2021-10-08 14:41:04,032 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) [2021-10-08 14:41:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4968 states and 14722 transitions. [2021-10-08 14:41:04,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:04,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:04,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:04,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-10-08 14:41:04,041 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)] === [2021-10-08 14:41:04,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:04,041 INFO L82 PathProgramCache]: Analyzing trace with hash 307689743, now seen corresponding path program 86 times [2021-10-08 14:41:04,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:04,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313552227] [2021-10-08 14:41:04,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:04,042 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:04,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:04,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:04,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313552227] [2021-10-08 14:41:04,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313552227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:04,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:04,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:04,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79085229] [2021-10-08 14:41:04,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:04,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:04,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:04,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:04,141 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) [2021-10-08 14:41:04,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:04,832 INFO L93 Difference]: Finished difference Result 5706 states and 16393 transitions. [2021-10-08 14:41:04,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:41:04,832 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 [2021-10-08 14:41:04,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:04,845 INFO L225 Difference]: With dead ends: 5706 [2021-10-08 14:41:04,845 INFO L226 Difference]: Without dead ends: 5638 [2021-10-08 14:41:04,845 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 234.0ms TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:41:04,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2021-10-08 14:41:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5064. [2021-10-08 14:41:04,924 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) [2021-10-08 14:41:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 14950 transitions. [2021-10-08 14:41:04,937 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 14950 transitions. Word has length 38 [2021-10-08 14:41:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:04,937 INFO L470 AbstractCegarLoop]: Abstraction has 5064 states and 14950 transitions. [2021-10-08 14:41:04,937 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) [2021-10-08 14:41:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 14950 transitions. [2021-10-08 14:41:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:04,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:04,946 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:04,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-10-08 14:41:04,946 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)] === [2021-10-08 14:41:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 123561245, now seen corresponding path program 87 times [2021-10-08 14:41:04,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:04,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913707660] [2021-10-08 14:41:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:04,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:05,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:05,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913707660] [2021-10-08 14:41:05,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913707660] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:05,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:05,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:05,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421172878] [2021-10-08 14:41:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:05,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:05,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:05,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:05,045 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) [2021-10-08 14:41:05,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:05,952 INFO L93 Difference]: Finished difference Result 6170 states and 17540 transitions. [2021-10-08 14:41:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:41:05,953 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 [2021-10-08 14:41:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:05,971 INFO L225 Difference]: With dead ends: 6170 [2021-10-08 14:41:05,972 INFO L226 Difference]: Without dead ends: 6096 [2021-10-08 14:41:05,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 265.3ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:41:05,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2021-10-08 14:41:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5064. [2021-10-08 14:41:06,098 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) [2021-10-08 14:41:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5064 states to 5064 states and 14932 transitions. [2021-10-08 14:41:06,115 INFO L78 Accepts]: Start accepts. Automaton has 5064 states and 14932 transitions. Word has length 38 [2021-10-08 14:41:06,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:06,116 INFO L470 AbstractCegarLoop]: Abstraction has 5064 states and 14932 transitions. [2021-10-08 14:41:06,116 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) [2021-10-08 14:41:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5064 states and 14932 transitions. [2021-10-08 14:41:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:06,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:06,127 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] [2021-10-08 14:41:06,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-10-08 14:41:06,128 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)] === [2021-10-08 14:41:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:06,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1818428209, now seen corresponding path program 88 times [2021-10-08 14:41:06,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:06,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682800913] [2021-10-08 14:41:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:06,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:06,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:06,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682800913] [2021-10-08 14:41:06,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682800913] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:06,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:06,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:41:06,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200371879] [2021-10-08 14:41:06,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:41:06,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:41:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:41:06,229 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) [2021-10-08 14:41:06,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:06,615 INFO L93 Difference]: Finished difference Result 5322 states and 15324 transitions. [2021-10-08 14:41:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:41:06,616 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 [2021-10-08 14:41:06,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:06,627 INFO L225 Difference]: With dead ends: 5322 [2021-10-08 14:41:06,627 INFO L226 Difference]: Without dead ends: 5284 [2021-10-08 14:41:06,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 106.6ms TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-10-08 14:41:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5284 states. [2021-10-08 14:41:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5284 to 5042. [2021-10-08 14:41:06,695 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) [2021-10-08 14:41:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 14762 transitions. [2021-10-08 14:41:06,709 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 14762 transitions. Word has length 38 [2021-10-08 14:41:06,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:06,709 INFO L470 AbstractCegarLoop]: Abstraction has 5042 states and 14762 transitions. [2021-10-08 14:41:06,709 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) [2021-10-08 14:41:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 14762 transitions. [2021-10-08 14:41:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:06,718 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:06,718 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:06,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-10-08 14:41:06,718 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)] === [2021-10-08 14:41:06,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash -932526841, now seen corresponding path program 89 times [2021-10-08 14:41:06,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:06,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795217308] [2021-10-08 14:41:06,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:06,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:06,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:06,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795217308] [2021-10-08 14:41:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795217308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:06,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:06,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:06,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000985181] [2021-10-08 14:41:06,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:06,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:06,831 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) [2021-10-08 14:41:07,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:07,770 INFO L93 Difference]: Finished difference Result 7090 states and 19895 transitions. [2021-10-08 14:41:07,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:41:07,771 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 [2021-10-08 14:41:07,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:07,787 INFO L225 Difference]: With dead ends: 7090 [2021-10-08 14:41:07,787 INFO L226 Difference]: Without dead ends: 7022 [2021-10-08 14:41:07,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 281.5ms TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:41:07,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7022 states. [2021-10-08 14:41:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7022 to 5042. [2021-10-08 14:41:07,876 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) [2021-10-08 14:41:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 14741 transitions. [2021-10-08 14:41:07,888 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 14741 transitions. Word has length 38 [2021-10-08 14:41:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:07,888 INFO L470 AbstractCegarLoop]: Abstraction has 5042 states and 14741 transitions. [2021-10-08 14:41:07,888 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) [2021-10-08 14:41:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 14741 transitions. [2021-10-08 14:41:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:07,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:07,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:07,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-10-08 14:41:07,897 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)] === [2021-10-08 14:41:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:07,897 INFO L82 PathProgramCache]: Analyzing trace with hash -516556877, now seen corresponding path program 90 times [2021-10-08 14:41:07,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:07,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829367466] [2021-10-08 14:41:07,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:07,897 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:08,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:08,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829367466] [2021-10-08 14:41:08,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829367466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:08,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:08,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:08,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799266519] [2021-10-08 14:41:08,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:08,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:08,031 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) [2021-10-08 14:41:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:09,197 INFO L93 Difference]: Finished difference Result 7234 states and 20198 transitions. [2021-10-08 14:41:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:41:09,197 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 [2021-10-08 14:41:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:09,215 INFO L225 Difference]: With dead ends: 7234 [2021-10-08 14:41:09,215 INFO L226 Difference]: Without dead ends: 7112 [2021-10-08 14:41:09,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 372.9ms TimeCoverageRelationStatistics Valid=292, Invalid=1114, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:41:09,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7112 states. [2021-10-08 14:41:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7112 to 4852. [2021-10-08 14:41:09,324 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) [2021-10-08 14:41:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 14224 transitions. [2021-10-08 14:41:09,339 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 14224 transitions. Word has length 38 [2021-10-08 14:41:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:09,339 INFO L470 AbstractCegarLoop]: Abstraction has 4852 states and 14224 transitions. [2021-10-08 14:41:09,340 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) [2021-10-08 14:41:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 14224 transitions. [2021-10-08 14:41:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:09,349 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:09,349 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:09,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-10-08 14:41:09,356 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)] === [2021-10-08 14:41:09,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:09,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1375303593, now seen corresponding path program 91 times [2021-10-08 14:41:09,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:09,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758213686] [2021-10-08 14:41:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:09,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:09,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:09,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:09,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758213686] [2021-10-08 14:41:09,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758213686] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:09,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:09,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:09,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612192518] [2021-10-08 14:41:09,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:09,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:09,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:09,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:09,483 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) [2021-10-08 14:41:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:10,621 INFO L93 Difference]: Finished difference Result 6376 states and 17890 transitions. [2021-10-08 14:41:10,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 14:41:10,621 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 [2021-10-08 14:41:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:10,639 INFO L225 Difference]: With dead ends: 6376 [2021-10-08 14:41:10,639 INFO L226 Difference]: Without dead ends: 6288 [2021-10-08 14:41:10,639 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 452.9ms TimeCoverageRelationStatistics Valid=330, Invalid=1152, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 14:41:10,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6288 states. [2021-10-08 14:41:10,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6288 to 4800. [2021-10-08 14:41:10,757 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) [2021-10-08 14:41:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 14076 transitions. [2021-10-08 14:41:10,773 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 14076 transitions. Word has length 38 [2021-10-08 14:41:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:10,773 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 14076 transitions. [2021-10-08 14:41:10,774 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) [2021-10-08 14:41:10,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 14076 transitions. [2021-10-08 14:41:10,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:10,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:10,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:10,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-10-08 14:41:10,785 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)] === [2021-10-08 14:41:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash -888585281, now seen corresponding path program 92 times [2021-10-08 14:41:10,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:10,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604804169] [2021-10-08 14:41:10,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:10,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:10,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:10,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604804169] [2021-10-08 14:41:10,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604804169] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:10,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:10,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927950698] [2021-10-08 14:41:10,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:10,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:10,891 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) [2021-10-08 14:41:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:11,768 INFO L93 Difference]: Finished difference Result 5494 states and 15717 transitions. [2021-10-08 14:41:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 14:41:11,769 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 [2021-10-08 14:41:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:11,779 INFO L225 Difference]: With dead ends: 5494 [2021-10-08 14:41:11,779 INFO L226 Difference]: Without dead ends: 5380 [2021-10-08 14:41:11,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 273.9ms TimeCoverageRelationStatistics Valid=222, Invalid=708, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:41:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2021-10-08 14:41:11,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 4800. [2021-10-08 14:41:11,851 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) [2021-10-08 14:41:11,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4800 states to 4800 states and 14092 transitions. [2021-10-08 14:41:11,862 INFO L78 Accepts]: Start accepts. Automaton has 4800 states and 14092 transitions. Word has length 38 [2021-10-08 14:41:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:11,863 INFO L470 AbstractCegarLoop]: Abstraction has 4800 states and 14092 transitions. [2021-10-08 14:41:11,863 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) [2021-10-08 14:41:11,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4800 states and 14092 transitions. [2021-10-08 14:41:11,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:11,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:11,871 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] [2021-10-08 14:41:11,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-10-08 14:41:11,871 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)] === [2021-10-08 14:41:11,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:11,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1930180879, now seen corresponding path program 93 times [2021-10-08 14:41:11,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:11,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139203418] [2021-10-08 14:41:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:11,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:11,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:11,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139203418] [2021-10-08 14:41:11,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139203418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:11,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:11,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:11,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584384341] [2021-10-08 14:41:11,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:11,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:11,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:11,974 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) [2021-10-08 14:41:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:12,567 INFO L93 Difference]: Finished difference Result 6294 states and 17716 transitions. [2021-10-08 14:41:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:41:12,568 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 [2021-10-08 14:41:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:12,580 INFO L225 Difference]: With dead ends: 6294 [2021-10-08 14:41:12,580 INFO L226 Difference]: Without dead ends: 6282 [2021-10-08 14:41:12,581 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:41:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-10-08 14:41:12,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 4806. [2021-10-08 14:41:12,659 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) [2021-10-08 14:41:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 14111 transitions. [2021-10-08 14:41:12,670 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 14111 transitions. Word has length 38 [2021-10-08 14:41:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:12,671 INFO L470 AbstractCegarLoop]: Abstraction has 4806 states and 14111 transitions. [2021-10-08 14:41:12,671 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) [2021-10-08 14:41:12,672 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 14111 transitions. [2021-10-08 14:41:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:12,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:12,680 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] [2021-10-08 14:41:12,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-10-08 14:41:12,681 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)] === [2021-10-08 14:41:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:12,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1968359791, now seen corresponding path program 94 times [2021-10-08 14:41:12,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:12,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638715708] [2021-10-08 14:41:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:12,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:12,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:12,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638715708] [2021-10-08 14:41:12,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638715708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:12,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:12,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:12,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915737175] [2021-10-08 14:41:12,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:12,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:12,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:12,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:12,804 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) [2021-10-08 14:41:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:13,545 INFO L93 Difference]: Finished difference Result 6242 states and 17601 transitions. [2021-10-08 14:41:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:41:13,545 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 [2021-10-08 14:41:13,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:13,559 INFO L225 Difference]: With dead ends: 6242 [2021-10-08 14:41:13,559 INFO L226 Difference]: Without dead ends: 6196 [2021-10-08 14:41:13,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 220.3ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:13,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6196 states. [2021-10-08 14:41:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6196 to 4796. [2021-10-08 14:41:13,630 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) [2021-10-08 14:41:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 14080 transitions. [2021-10-08 14:41:13,641 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 14080 transitions. Word has length 38 [2021-10-08 14:41:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:13,641 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 14080 transitions. [2021-10-08 14:41:13,641 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) [2021-10-08 14:41:13,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 14080 transitions. [2021-10-08 14:41:13,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:13,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:13,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:13,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-10-08 14:41:13,649 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)] === [2021-10-08 14:41:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:13,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1361347909, now seen corresponding path program 95 times [2021-10-08 14:41:13,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:13,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446004339] [2021-10-08 14:41:13,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:13,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:13,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:13,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446004339] [2021-10-08 14:41:13,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446004339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:13,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:13,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:13,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884137724] [2021-10-08 14:41:13,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:13,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:13,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:13,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:13,757 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) [2021-10-08 14:41:14,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:14,437 INFO L93 Difference]: Finished difference Result 6230 states and 17638 transitions. [2021-10-08 14:41:14,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:41:14,438 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 [2021-10-08 14:41:14,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:14,452 INFO L225 Difference]: With dead ends: 6230 [2021-10-08 14:41:14,452 INFO L226 Difference]: Without dead ends: 6218 [2021-10-08 14:41:14,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 186.9ms TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:41:14,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6218 states. [2021-10-08 14:41:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6218 to 4786. [2021-10-08 14:41:14,537 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) [2021-10-08 14:41:14,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4786 states to 4786 states and 14043 transitions. [2021-10-08 14:41:14,550 INFO L78 Accepts]: Start accepts. Automaton has 4786 states and 14043 transitions. Word has length 38 [2021-10-08 14:41:14,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:14,550 INFO L470 AbstractCegarLoop]: Abstraction has 4786 states and 14043 transitions. [2021-10-08 14:41:14,550 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) [2021-10-08 14:41:14,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4786 states and 14043 transitions. [2021-10-08 14:41:14,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:14,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:14,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:14,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-10-08 14:41:14,560 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)] === [2021-10-08 14:41:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:14,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1862805551, now seen corresponding path program 96 times [2021-10-08 14:41:14,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:14,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460487322] [2021-10-08 14:41:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:14,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:14,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:14,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460487322] [2021-10-08 14:41:14,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460487322] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:14,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:14,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:14,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331794644] [2021-10-08 14:41:14,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:14,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:14,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:14,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:14,654 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) [2021-10-08 14:41:15,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:15,390 INFO L93 Difference]: Finished difference Result 6354 states and 17843 transitions. [2021-10-08 14:41:15,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:41:15,390 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 [2021-10-08 14:41:15,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:15,402 INFO L225 Difference]: With dead ends: 6354 [2021-10-08 14:41:15,402 INFO L226 Difference]: Without dead ends: 6346 [2021-10-08 14:41:15,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 253.4ms TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:41:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2021-10-08 14:41:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 4782. [2021-10-08 14:41:15,474 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) [2021-10-08 14:41:15,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 14033 transitions. [2021-10-08 14:41:15,485 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 14033 transitions. Word has length 38 [2021-10-08 14:41:15,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:15,485 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 14033 transitions. [2021-10-08 14:41:15,485 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) [2021-10-08 14:41:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 14033 transitions. [2021-10-08 14:41:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:15,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:15,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:15,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-10-08 14:41:15,493 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)] === [2021-10-08 14:41:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:15,493 INFO L82 PathProgramCache]: Analyzing trace with hash 733093013, now seen corresponding path program 97 times [2021-10-08 14:41:15,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:15,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134541112] [2021-10-08 14:41:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:15,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:15,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:15,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134541112] [2021-10-08 14:41:15,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134541112] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:15,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:15,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:15,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402450495] [2021-10-08 14:41:15,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:15,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:15,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:15,608 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) [2021-10-08 14:41:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:16,389 INFO L93 Difference]: Finished difference Result 6110 states and 17319 transitions. [2021-10-08 14:41:16,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:41:16,390 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 [2021-10-08 14:41:16,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:16,402 INFO L225 Difference]: With dead ends: 6110 [2021-10-08 14:41:16,403 INFO L226 Difference]: Without dead ends: 6066 [2021-10-08 14:41:16,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 211.0ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:16,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2021-10-08 14:41:16,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 4762. [2021-10-08 14:41:16,477 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) [2021-10-08 14:41:16,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 13951 transitions. [2021-10-08 14:41:16,488 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 13951 transitions. Word has length 38 [2021-10-08 14:41:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:16,488 INFO L470 AbstractCegarLoop]: Abstraction has 4762 states and 13951 transitions. [2021-10-08 14:41:16,489 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) [2021-10-08 14:41:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 13951 transitions. [2021-10-08 14:41:16,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:16,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:16,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:16,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-10-08 14:41:16,497 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)] === [2021-10-08 14:41:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:16,497 INFO L82 PathProgramCache]: Analyzing trace with hash 58705803, now seen corresponding path program 98 times [2021-10-08 14:41:16,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:16,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587774488] [2021-10-08 14:41:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:16,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:16,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:16,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587774488] [2021-10-08 14:41:16,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587774488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:16,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:16,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:16,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604095707] [2021-10-08 14:41:16,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:16,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:16,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:16,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:16,617 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) [2021-10-08 14:41:17,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:17,594 INFO L93 Difference]: Finished difference Result 6316 states and 17732 transitions. [2021-10-08 14:41:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:41:17,595 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 [2021-10-08 14:41:17,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:17,607 INFO L225 Difference]: With dead ends: 6316 [2021-10-08 14:41:17,607 INFO L226 Difference]: Without dead ends: 6278 [2021-10-08 14:41:17,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 317.0ms TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:41:17,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2021-10-08 14:41:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 4750. [2021-10-08 14:41:17,713 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) [2021-10-08 14:41:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4750 states to 4750 states and 13929 transitions. [2021-10-08 14:41:17,724 INFO L78 Accepts]: Start accepts. Automaton has 4750 states and 13929 transitions. Word has length 38 [2021-10-08 14:41:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:17,724 INFO L470 AbstractCegarLoop]: Abstraction has 4750 states and 13929 transitions. [2021-10-08 14:41:17,724 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) [2021-10-08 14:41:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4750 states and 13929 transitions. [2021-10-08 14:41:17,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:17,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:17,731 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:17,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-10-08 14:41:17,732 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)] === [2021-10-08 14:41:17,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:17,732 INFO L82 PathProgramCache]: Analyzing trace with hash 546338677, now seen corresponding path program 99 times [2021-10-08 14:41:17,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:17,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342490654] [2021-10-08 14:41:17,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:17,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:17,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:17,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342490654] [2021-10-08 14:41:17,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342490654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:17,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:17,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:17,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536179496] [2021-10-08 14:41:17,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:17,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:17,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:17,840 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) [2021-10-08 14:41:18,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:18,484 INFO L93 Difference]: Finished difference Result 6186 states and 17345 transitions. [2021-10-08 14:41:18,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:18,484 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 [2021-10-08 14:41:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:18,496 INFO L225 Difference]: With dead ends: 6186 [2021-10-08 14:41:18,496 INFO L226 Difference]: Without dead ends: 5860 [2021-10-08 14:41:18,496 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 [2021-10-08 14:41:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5860 states. [2021-10-08 14:41:18,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5860 to 4768. [2021-10-08 14:41:18,568 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) [2021-10-08 14:41:18,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4768 states to 4768 states and 13973 transitions. [2021-10-08 14:41:18,579 INFO L78 Accepts]: Start accepts. Automaton has 4768 states and 13973 transitions. Word has length 38 [2021-10-08 14:41:18,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:18,580 INFO L470 AbstractCegarLoop]: Abstraction has 4768 states and 13973 transitions. [2021-10-08 14:41:18,580 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) [2021-10-08 14:41:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4768 states and 13973 transitions. [2021-10-08 14:41:18,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:18,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:18,588 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:18,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-10-08 14:41:18,588 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)] === [2021-10-08 14:41:18,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:18,589 INFO L82 PathProgramCache]: Analyzing trace with hash 463613039, now seen corresponding path program 100 times [2021-10-08 14:41:18,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:18,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940902530] [2021-10-08 14:41:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:18,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:18,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:18,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:18,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940902530] [2021-10-08 14:41:18,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940902530] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:18,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:18,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:18,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481211528] [2021-10-08 14:41:18,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:18,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:18,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:18,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:18,705 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) [2021-10-08 14:41:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:19,662 INFO L93 Difference]: Finished difference Result 6110 states and 17148 transitions. [2021-10-08 14:41:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:41:19,663 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 [2021-10-08 14:41:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:19,675 INFO L225 Difference]: With dead ends: 6110 [2021-10-08 14:41:19,675 INFO L226 Difference]: Without dead ends: 6094 [2021-10-08 14:41:19,676 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 394.7ms TimeCoverageRelationStatistics Valid=343, Invalid=1063, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:41:19,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-10-08 14:41:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 4772. [2021-10-08 14:41:19,753 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) [2021-10-08 14:41:19,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4772 states to 4772 states and 13981 transitions. [2021-10-08 14:41:19,764 INFO L78 Accepts]: Start accepts. Automaton has 4772 states and 13981 transitions. Word has length 38 [2021-10-08 14:41:19,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:19,765 INFO L470 AbstractCegarLoop]: Abstraction has 4772 states and 13981 transitions. [2021-10-08 14:41:19,765 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) [2021-10-08 14:41:19,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4772 states and 13981 transitions. [2021-10-08 14:41:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:19,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:19,774 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:19,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-10-08 14:41:19,774 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)] === [2021-10-08 14:41:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:19,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1648541131, now seen corresponding path program 101 times [2021-10-08 14:41:19,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:19,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958920633] [2021-10-08 14:41:19,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:19,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:19,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:19,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:19,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958920633] [2021-10-08 14:41:19,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958920633] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:19,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:19,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:19,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994753384] [2021-10-08 14:41:19,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:19,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:19,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:19,916 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) [2021-10-08 14:41:21,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:21,037 INFO L93 Difference]: Finished difference Result 6714 states and 18739 transitions. [2021-10-08 14:41:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 14:41:21,038 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 [2021-10-08 14:41:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:21,051 INFO L225 Difference]: With dead ends: 6714 [2021-10-08 14:41:21,051 INFO L226 Difference]: Without dead ends: 6654 [2021-10-08 14:41:21,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 405.9ms TimeCoverageRelationStatistics Valid=305, Invalid=1101, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 14:41:21,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6654 states. [2021-10-08 14:41:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6654 to 4796. [2021-10-08 14:41:21,126 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) [2021-10-08 14:41:21,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 14044 transitions. [2021-10-08 14:41:21,138 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 14044 transitions. Word has length 38 [2021-10-08 14:41:21,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:21,138 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 14044 transitions. [2021-10-08 14:41:21,138 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) [2021-10-08 14:41:21,138 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 14044 transitions. [2021-10-08 14:41:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:21,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:21,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:21,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-10-08 14:41:21,146 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)] === [2021-10-08 14:41:21,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:21,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1750203705, now seen corresponding path program 102 times [2021-10-08 14:41:21,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:21,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211922480] [2021-10-08 14:41:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:21,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:21,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:21,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211922480] [2021-10-08 14:41:21,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211922480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:21,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:21,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:21,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545702286] [2021-10-08 14:41:21,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:21,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:21,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:21,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:21,240 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) [2021-10-08 14:41:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:21,700 INFO L93 Difference]: Finished difference Result 5406 states and 15454 transitions. [2021-10-08 14:41:21,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:41:21,701 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 [2021-10-08 14:41:21,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:21,712 INFO L225 Difference]: With dead ends: 5406 [2021-10-08 14:41:21,712 INFO L226 Difference]: Without dead ends: 5068 [2021-10-08 14:41:21,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 112.1ms TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:41:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5068 states. [2021-10-08 14:41:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5068 to 4514. [2021-10-08 14:41:21,776 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) [2021-10-08 14:41:21,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 13257 transitions. [2021-10-08 14:41:21,787 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 13257 transitions. Word has length 38 [2021-10-08 14:41:21,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:21,788 INFO L470 AbstractCegarLoop]: Abstraction has 4514 states and 13257 transitions. [2021-10-08 14:41:21,788 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) [2021-10-08 14:41:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 13257 transitions. [2021-10-08 14:41:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:21,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:21,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:21,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-10-08 14:41:21,795 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)] === [2021-10-08 14:41:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -454310245, now seen corresponding path program 103 times [2021-10-08 14:41:21,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:21,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468141370] [2021-10-08 14:41:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:21,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:21,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:21,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468141370] [2021-10-08 14:41:21,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468141370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:21,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:21,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:21,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664675729] [2021-10-08 14:41:21,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:21,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:21,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:21,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:21,911 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) [2021-10-08 14:41:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:22,648 INFO L93 Difference]: Finished difference Result 5516 states and 15570 transitions. [2021-10-08 14:41:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 14:41:22,649 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 [2021-10-08 14:41:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:22,660 INFO L225 Difference]: With dead ends: 5516 [2021-10-08 14:41:22,660 INFO L226 Difference]: Without dead ends: 5488 [2021-10-08 14:41:22,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5488 states. [2021-10-08 14:41:22,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5488 to 4544. [2021-10-08 14:41:22,728 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) [2021-10-08 14:41:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4544 states to 4544 states and 13318 transitions. [2021-10-08 14:41:22,738 INFO L78 Accepts]: Start accepts. Automaton has 4544 states and 13318 transitions. Word has length 38 [2021-10-08 14:41:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:22,739 INFO L470 AbstractCegarLoop]: Abstraction has 4544 states and 13318 transitions. [2021-10-08 14:41:22,739 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) [2021-10-08 14:41:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 4544 states and 13318 transitions. [2021-10-08 14:41:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:22,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:22,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:22,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-10-08 14:41:22,747 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)] === [2021-10-08 14:41:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:22,747 INFO L82 PathProgramCache]: Analyzing trace with hash 52754119, now seen corresponding path program 104 times [2021-10-08 14:41:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:22,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992004993] [2021-10-08 14:41:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:22,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:22,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:22,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992004993] [2021-10-08 14:41:22,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992004993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:22,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:22,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:22,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992875910] [2021-10-08 14:41:22,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:22,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:22,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:22,842 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) [2021-10-08 14:41:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:23,644 INFO L93 Difference]: Finished difference Result 6352 states and 17800 transitions. [2021-10-08 14:41:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 14:41:23,644 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 [2021-10-08 14:41:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:23,658 INFO L225 Difference]: With dead ends: 6352 [2021-10-08 14:41:23,658 INFO L226 Difference]: Without dead ends: 6336 [2021-10-08 14:41:23,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 227.1ms TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:41:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6336 states. [2021-10-08 14:41:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6336 to 4540. [2021-10-08 14:41:23,731 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) [2021-10-08 14:41:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4540 states to 4540 states and 13306 transitions. [2021-10-08 14:41:23,742 INFO L78 Accepts]: Start accepts. Automaton has 4540 states and 13306 transitions. Word has length 38 [2021-10-08 14:41:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:23,742 INFO L470 AbstractCegarLoop]: Abstraction has 4540 states and 13306 transitions. [2021-10-08 14:41:23,742 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) [2021-10-08 14:41:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4540 states and 13306 transitions. [2021-10-08 14:41:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:23,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:23,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:23,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-10-08 14:41:23,750 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)] === [2021-10-08 14:41:23,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:23,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1018059717, now seen corresponding path program 105 times [2021-10-08 14:41:23,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:23,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829283706] [2021-10-08 14:41:23,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:23,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:23,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:23,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:23,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829283706] [2021-10-08 14:41:23,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829283706] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:23,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:23,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:23,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396929723] [2021-10-08 14:41:23,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:23,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:23,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:23,872 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) [2021-10-08 14:41:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:24,834 INFO L93 Difference]: Finished difference Result 6502 states and 18116 transitions. [2021-10-08 14:41:24,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 14:41:24,834 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 [2021-10-08 14:41:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:24,848 INFO L225 Difference]: With dead ends: 6502 [2021-10-08 14:41:24,849 INFO L226 Difference]: Without dead ends: 6466 [2021-10-08 14:41:24,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 333.2ms TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 14:41:24,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6466 states. [2021-10-08 14:41:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6466 to 4508. [2021-10-08 14:41:24,929 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) [2021-10-08 14:41:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 13226 transitions. [2021-10-08 14:41:24,940 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 13226 transitions. Word has length 38 [2021-10-08 14:41:24,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:24,941 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 13226 transitions. [2021-10-08 14:41:24,941 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) [2021-10-08 14:41:24,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 13226 transitions. [2021-10-08 14:41:24,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:24,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:24,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:24,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-10-08 14:41:24,974 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)] === [2021-10-08 14:41:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash -271805531, now seen corresponding path program 106 times [2021-10-08 14:41:24,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:24,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224555899] [2021-10-08 14:41:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:24,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:25,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:25,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224555899] [2021-10-08 14:41:25,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224555899] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:25,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:25,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:25,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807040079] [2021-10-08 14:41:25,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:25,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:25,097 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) [2021-10-08 14:41:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:26,013 INFO L93 Difference]: Finished difference Result 5630 states and 15767 transitions. [2021-10-08 14:41:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 14:41:26,013 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 [2021-10-08 14:41:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:26,024 INFO L225 Difference]: With dead ends: 5630 [2021-10-08 14:41:26,024 INFO L226 Difference]: Without dead ends: 5598 [2021-10-08 14:41:26,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 324.5ms TimeCoverageRelationStatistics Valid=278, Invalid=844, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 14:41:26,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2021-10-08 14:41:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 4520. [2021-10-08 14:41:26,090 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) [2021-10-08 14:41:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 13246 transitions. [2021-10-08 14:41:26,101 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 13246 transitions. Word has length 38 [2021-10-08 14:41:26,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:26,101 INFO L470 AbstractCegarLoop]: Abstraction has 4520 states and 13246 transitions. [2021-10-08 14:41:26,101 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) [2021-10-08 14:41:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 13246 transitions. [2021-10-08 14:41:26,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:26,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:26,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:26,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-10-08 14:41:26,108 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)] === [2021-10-08 14:41:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:26,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1604452597, now seen corresponding path program 107 times [2021-10-08 14:41:26,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:26,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888625772] [2021-10-08 14:41:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:26,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:26,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:26,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:26,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888625772] [2021-10-08 14:41:26,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888625772] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:26,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:26,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:26,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591727609] [2021-10-08 14:41:26,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:26,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:26,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:26,228 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) [2021-10-08 14:41:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:26,890 INFO L93 Difference]: Finished difference Result 4878 states and 13964 transitions. [2021-10-08 14:41:26,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:41:26,890 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 [2021-10-08 14:41:26,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:26,901 INFO L225 Difference]: With dead ends: 4878 [2021-10-08 14:41:26,901 INFO L226 Difference]: Without dead ends: 4836 [2021-10-08 14:41:26,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 227.8ms TimeCoverageRelationStatistics Valid=190, Invalid=512, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:41:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2021-10-08 14:41:26,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4502. [2021-10-08 14:41:26,967 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) [2021-10-08 14:41:26,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4502 states to 4502 states and 13197 transitions. [2021-10-08 14:41:26,978 INFO L78 Accepts]: Start accepts. Automaton has 4502 states and 13197 transitions. Word has length 38 [2021-10-08 14:41:26,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:26,979 INFO L470 AbstractCegarLoop]: Abstraction has 4502 states and 13197 transitions. [2021-10-08 14:41:26,979 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) [2021-10-08 14:41:26,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4502 states and 13197 transitions. [2021-10-08 14:41:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:26,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:26,987 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:26,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-10-08 14:41:26,987 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)] === [2021-10-08 14:41:26,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:26,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1428244927, now seen corresponding path program 108 times [2021-10-08 14:41:26,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:26,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70563096] [2021-10-08 14:41:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:26,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:27,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:27,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:27,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70563096] [2021-10-08 14:41:27,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70563096] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:27,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:27,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:27,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694714954] [2021-10-08 14:41:27,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:27,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:27,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:27,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:27,103 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) [2021-10-08 14:41:27,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:27,894 INFO L93 Difference]: Finished difference Result 5554 states and 15625 transitions. [2021-10-08 14:41:27,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 14:41:27,894 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 [2021-10-08 14:41:27,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:27,906 INFO L225 Difference]: With dead ends: 5554 [2021-10-08 14:41:27,906 INFO L226 Difference]: Without dead ends: 5496 [2021-10-08 14:41:27,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 233.4ms TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:41:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5496 states. [2021-10-08 14:41:27,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5496 to 4532. [2021-10-08 14:41:27,975 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) [2021-10-08 14:41:27,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4532 states to 4532 states and 13254 transitions. [2021-10-08 14:41:27,986 INFO L78 Accepts]: Start accepts. Automaton has 4532 states and 13254 transitions. Word has length 38 [2021-10-08 14:41:27,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:27,986 INFO L470 AbstractCegarLoop]: Abstraction has 4532 states and 13254 transitions. [2021-10-08 14:41:27,987 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) [2021-10-08 14:41:27,987 INFO L276 IsEmpty]: Start isEmpty. Operand 4532 states and 13254 transitions. [2021-10-08 14:41:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:27,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:27,994 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] [2021-10-08 14:41:27,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-10-08 14:41:27,995 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)] === [2021-10-08 14:41:27,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:27,995 INFO L82 PathProgramCache]: Analyzing trace with hash -265217083, now seen corresponding path program 109 times [2021-10-08 14:41:27,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:27,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140422564] [2021-10-08 14:41:27,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:27,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:28,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:28,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140422564] [2021-10-08 14:41:28,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140422564] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:28,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:28,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:28,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007584757] [2021-10-08 14:41:28,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:28,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:28,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:28,093 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) [2021-10-08 14:41:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:28,932 INFO L93 Difference]: Finished difference Result 6354 states and 17765 transitions. [2021-10-08 14:41:28,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 14:41:28,932 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 [2021-10-08 14:41:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:28,946 INFO L225 Difference]: With dead ends: 6354 [2021-10-08 14:41:28,946 INFO L226 Difference]: Without dead ends: 6310 [2021-10-08 14:41:28,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 248.8ms TimeCoverageRelationStatistics Valid=200, Invalid=670, Unknown=0, NotChecked=0, Total=870 [2021-10-08 14:41:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6310 states. [2021-10-08 14:41:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6310 to 4534. [2021-10-08 14:41:29,026 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) [2021-10-08 14:41:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4534 states to 4534 states and 13253 transitions. [2021-10-08 14:41:29,038 INFO L78 Accepts]: Start accepts. Automaton has 4534 states and 13253 transitions. Word has length 38 [2021-10-08 14:41:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:29,039 INFO L470 AbstractCegarLoop]: Abstraction has 4534 states and 13253 transitions. [2021-10-08 14:41:29,039 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) [2021-10-08 14:41:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 4534 states and 13253 transitions. [2021-10-08 14:41:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:29,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:29,048 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] [2021-10-08 14:41:29,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-10-08 14:41:29,049 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)] === [2021-10-08 14:41:29,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:29,049 INFO L82 PathProgramCache]: Analyzing trace with hash -939604293, now seen corresponding path program 110 times [2021-10-08 14:41:29,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:29,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584234971] [2021-10-08 14:41:29,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:29,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:29,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:29,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584234971] [2021-10-08 14:41:29,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584234971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:29,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:29,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:29,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65922156] [2021-10-08 14:41:29,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:29,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:29,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:29,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:29,158 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) [2021-10-08 14:41:30,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:30,280 INFO L93 Difference]: Finished difference Result 6512 states and 18110 transitions. [2021-10-08 14:41:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 14:41:30,281 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 [2021-10-08 14:41:30,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:30,293 INFO L225 Difference]: With dead ends: 6512 [2021-10-08 14:41:30,293 INFO L226 Difference]: Without dead ends: 6448 [2021-10-08 14:41:30,293 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 373.5ms TimeCoverageRelationStatistics Valid=281, Invalid=1051, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 14:41:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6448 states. [2021-10-08 14:41:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6448 to 4488. [2021-10-08 14:41:30,360 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) [2021-10-08 14:41:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 13137 transitions. [2021-10-08 14:41:30,371 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 13137 transitions. Word has length 38 [2021-10-08 14:41:30,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:30,371 INFO L470 AbstractCegarLoop]: Abstraction has 4488 states and 13137 transitions. [2021-10-08 14:41:30,371 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) [2021-10-08 14:41:30,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 13137 transitions. [2021-10-08 14:41:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:30,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:30,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:30,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-10-08 14:41:30,381 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)] === [2021-10-08 14:41:30,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:30,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1008812251, now seen corresponding path program 111 times [2021-10-08 14:41:30,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:30,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217123774] [2021-10-08 14:41:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:30,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:30,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:30,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217123774] [2021-10-08 14:41:30,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217123774] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:30,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:30,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:30,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342935023] [2021-10-08 14:41:30,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:30,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:30,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:30,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:30,503 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) [2021-10-08 14:41:31,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:31,448 INFO L93 Difference]: Finished difference Result 5922 states and 16539 transitions. [2021-10-08 14:41:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 14:41:31,449 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 [2021-10-08 14:41:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:31,459 INFO L225 Difference]: With dead ends: 5922 [2021-10-08 14:41:31,460 INFO L226 Difference]: Without dead ends: 5860 [2021-10-08 14:41:31,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 348.1ms TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 14:41:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5860 states. [2021-10-08 14:41:31,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5860 to 4478. [2021-10-08 14:41:31,525 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) [2021-10-08 14:41:31,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 13096 transitions. [2021-10-08 14:41:31,535 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 13096 transitions. Word has length 38 [2021-10-08 14:41:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:31,535 INFO L470 AbstractCegarLoop]: Abstraction has 4478 states and 13096 transitions. [2021-10-08 14:41:31,535 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) [2021-10-08 14:41:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 13096 transitions. [2021-10-08 14:41:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:31,542 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:31,542 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:31,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-10-08 14:41:31,543 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)] === [2021-10-08 14:41:31,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:31,543 INFO L82 PathProgramCache]: Analyzing trace with hash 768579887, now seen corresponding path program 112 times [2021-10-08 14:41:31,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:31,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047609931] [2021-10-08 14:41:31,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:31,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:31,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:31,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:31,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047609931] [2021-10-08 14:41:31,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047609931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:31,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:31,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:31,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511692710] [2021-10-08 14:41:31,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:31,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:31,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:31,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:31,649 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) [2021-10-08 14:41:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:32,372 INFO L93 Difference]: Finished difference Result 5156 states and 14729 transitions. [2021-10-08 14:41:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 14:41:32,373 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 [2021-10-08 14:41:32,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:32,382 INFO L225 Difference]: With dead ends: 5156 [2021-10-08 14:41:32,383 INFO L226 Difference]: Without dead ends: 5066 [2021-10-08 14:41:32,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 226.6ms TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:41:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5066 states. [2021-10-08 14:41:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5066 to 4446. [2021-10-08 14:41:32,447 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) [2021-10-08 14:41:32,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4446 states to 4446 states and 13056 transitions. [2021-10-08 14:41:32,457 INFO L78 Accepts]: Start accepts. Automaton has 4446 states and 13056 transitions. Word has length 38 [2021-10-08 14:41:32,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:32,458 INFO L470 AbstractCegarLoop]: Abstraction has 4446 states and 13056 transitions. [2021-10-08 14:41:32,458 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) [2021-10-08 14:41:32,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4446 states and 13056 transitions. [2021-10-08 14:41:32,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:32,464 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:32,464 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] [2021-10-08 14:41:32,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-10-08 14:41:32,465 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)] === [2021-10-08 14:41:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:32,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1973395073, now seen corresponding path program 113 times [2021-10-08 14:41:32,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:32,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707399820] [2021-10-08 14:41:32,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:32,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:32,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:32,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707399820] [2021-10-08 14:41:32,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707399820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:32,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:32,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 14:41:32,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668349010] [2021-10-08 14:41:32,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 14:41:32,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:32,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 14:41:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-08 14:41:32,519 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) [2021-10-08 14:41:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:32,643 INFO L93 Difference]: Finished difference Result 4238 states and 12242 transitions. [2021-10-08 14:41:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 14:41:32,644 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 [2021-10-08 14:41:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:32,652 INFO L225 Difference]: With dead ends: 4238 [2021-10-08 14:41:32,652 INFO L226 Difference]: Without dead ends: 4016 [2021-10-08 14:41:32,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.7ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 14:41:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4016 states. [2021-10-08 14:41:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4016 to 3996. [2021-10-08 14:41:32,709 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) [2021-10-08 14:41:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3996 states to 3996 states and 11676 transitions. [2021-10-08 14:41:32,719 INFO L78 Accepts]: Start accepts. Automaton has 3996 states and 11676 transitions. Word has length 38 [2021-10-08 14:41:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:32,720 INFO L470 AbstractCegarLoop]: Abstraction has 3996 states and 11676 transitions. [2021-10-08 14:41:32,720 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) [2021-10-08 14:41:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3996 states and 11676 transitions. [2021-10-08 14:41:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:32,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:32,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:32,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-10-08 14:41:32,728 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)] === [2021-10-08 14:41:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:32,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1232562047, now seen corresponding path program 114 times [2021-10-08 14:41:32,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:32,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356710526] [2021-10-08 14:41:32,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:32,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:32,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:32,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356710526] [2021-10-08 14:41:32,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356710526] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:32,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:32,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 14:41:32,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287856883] [2021-10-08 14:41:32,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 14:41:32,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:32,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 14:41:32,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:41:32,917 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) [2021-10-08 14:41:33,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:33,110 INFO L93 Difference]: Finished difference Result 4479 states and 12852 transitions. [2021-10-08 14:41:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 14:41:33,110 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 [2021-10-08 14:41:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:33,119 INFO L225 Difference]: With dead ends: 4479 [2021-10-08 14:41:33,119 INFO L226 Difference]: Without dead ends: 3968 [2021-10-08 14:41:33,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2021-10-08 14:41:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3960. [2021-10-08 14:41:33,172 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) [2021-10-08 14:41:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 11426 transitions. [2021-10-08 14:41:33,181 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 11426 transitions. Word has length 38 [2021-10-08 14:41:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:33,181 INFO L470 AbstractCegarLoop]: Abstraction has 3960 states and 11426 transitions. [2021-10-08 14:41:33,181 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) [2021-10-08 14:41:33,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 11426 transitions. [2021-10-08 14:41:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:33,187 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:33,187 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] [2021-10-08 14:41:33,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-10-08 14:41:33,188 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)] === [2021-10-08 14:41:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:33,188 INFO L82 PathProgramCache]: Analyzing trace with hash 861750979, now seen corresponding path program 115 times [2021-10-08 14:41:33,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:33,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41568479] [2021-10-08 14:41:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:33,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:33,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:33,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41568479] [2021-10-08 14:41:33,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41568479] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:33,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:33,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:33,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269203596] [2021-10-08 14:41:33,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:33,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:33,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:33,291 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) [2021-10-08 14:41:33,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:33,851 INFO L93 Difference]: Finished difference Result 5240 states and 14504 transitions. [2021-10-08 14:41:33,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:41:33,852 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 [2021-10-08 14:41:33,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:33,861 INFO L225 Difference]: With dead ends: 5240 [2021-10-08 14:41:33,861 INFO L226 Difference]: Without dead ends: 5224 [2021-10-08 14:41:33,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:41:33,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2021-10-08 14:41:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4004. [2021-10-08 14:41:33,922 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) [2021-10-08 14:41:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11555 transitions. [2021-10-08 14:41:33,932 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11555 transitions. Word has length 38 [2021-10-08 14:41:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:33,932 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11555 transitions. [2021-10-08 14:41:33,932 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) [2021-10-08 14:41:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11555 transitions. [2021-10-08 14:41:33,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:33,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:33,938 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:33,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-10-08 14:41:33,939 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)] === [2021-10-08 14:41:33,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:33,939 INFO L82 PathProgramCache]: Analyzing trace with hash 615714323, now seen corresponding path program 116 times [2021-10-08 14:41:33,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:33,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654793603] [2021-10-08 14:41:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:33,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:34,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:34,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654793603] [2021-10-08 14:41:34,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654793603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:34,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:34,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:34,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542145192] [2021-10-08 14:41:34,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:34,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:34,054 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) [2021-10-08 14:41:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:34,655 INFO L93 Difference]: Finished difference Result 5582 states and 15422 transitions. [2021-10-08 14:41:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:41:34,656 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 [2021-10-08 14:41:34,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:34,666 INFO L225 Difference]: With dead ends: 5582 [2021-10-08 14:41:34,666 INFO L226 Difference]: Without dead ends: 5512 [2021-10-08 14:41:34,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 188.4ms TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5512 states. [2021-10-08 14:41:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5512 to 4102. [2021-10-08 14:41:34,733 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) [2021-10-08 14:41:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 11815 transitions. [2021-10-08 14:41:34,742 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 11815 transitions. Word has length 38 [2021-10-08 14:41:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:34,742 INFO L470 AbstractCegarLoop]: Abstraction has 4102 states and 11815 transitions. [2021-10-08 14:41:34,742 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) [2021-10-08 14:41:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 11815 transitions. [2021-10-08 14:41:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:34,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:34,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:34,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-10-08 14:41:34,749 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)] === [2021-10-08 14:41:34,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1777559399, now seen corresponding path program 117 times [2021-10-08 14:41:34,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:34,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973482620] [2021-10-08 14:41:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:34,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:34,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:34,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973482620] [2021-10-08 14:41:34,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973482620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:34,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:34,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:34,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41253484] [2021-10-08 14:41:34,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:34,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:34,845 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) [2021-10-08 14:41:35,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:35,249 INFO L93 Difference]: Finished difference Result 4618 states and 13001 transitions. [2021-10-08 14:41:35,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:35,250 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 [2021-10-08 14:41:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:35,259 INFO L225 Difference]: With dead ends: 4618 [2021-10-08 14:41:35,259 INFO L226 Difference]: Without dead ends: 4588 [2021-10-08 14:41:35,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:41:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2021-10-08 14:41:35,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4100. [2021-10-08 14:41:35,316 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) [2021-10-08 14:41:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 11800 transitions. [2021-10-08 14:41:35,325 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 11800 transitions. Word has length 38 [2021-10-08 14:41:35,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:35,326 INFO L470 AbstractCegarLoop]: Abstraction has 4100 states and 11800 transitions. [2021-10-08 14:41:35,326 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) [2021-10-08 14:41:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 11800 transitions. [2021-10-08 14:41:35,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:35,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:35,332 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] [2021-10-08 14:41:35,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-10-08 14:41:35,333 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)] === [2021-10-08 14:41:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:35,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1554609641, now seen corresponding path program 118 times [2021-10-08 14:41:35,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:35,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333233809] [2021-10-08 14:41:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:35,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:35,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:35,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333233809] [2021-10-08 14:41:35,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333233809] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:35,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:35,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:35,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002115704] [2021-10-08 14:41:35,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:35,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:35,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:35,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:35,436 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) [2021-10-08 14:41:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:35,829 INFO L93 Difference]: Finished difference Result 4956 states and 13914 transitions. [2021-10-08 14:41:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:35,829 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 [2021-10-08 14:41:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:35,845 INFO L225 Difference]: With dead ends: 4956 [2021-10-08 14:41:35,845 INFO L226 Difference]: Without dead ends: 4858 [2021-10-08 14:41:35,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 116.5ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-10-08 14:41:35,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4082. [2021-10-08 14:41:35,909 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) [2021-10-08 14:41:35,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4082 states to 4082 states and 11750 transitions. [2021-10-08 14:41:35,919 INFO L78 Accepts]: Start accepts. Automaton has 4082 states and 11750 transitions. Word has length 38 [2021-10-08 14:41:35,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:35,919 INFO L470 AbstractCegarLoop]: Abstraction has 4082 states and 11750 transitions. [2021-10-08 14:41:35,919 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) [2021-10-08 14:41:35,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4082 states and 11750 transitions. [2021-10-08 14:41:35,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:35,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:35,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:35,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-10-08 14:41:35,926 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)] === [2021-10-08 14:41:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:35,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1360091997, now seen corresponding path program 119 times [2021-10-08 14:41:35,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:35,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427868681] [2021-10-08 14:41:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:35,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:36,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:36,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427868681] [2021-10-08 14:41:36,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427868681] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:36,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:36,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:36,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217608487] [2021-10-08 14:41:36,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:36,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:36,009 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) [2021-10-08 14:41:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:36,458 INFO L93 Difference]: Finished difference Result 5300 states and 14677 transitions. [2021-10-08 14:41:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:36,458 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 [2021-10-08 14:41:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:36,468 INFO L225 Difference]: With dead ends: 5300 [2021-10-08 14:41:36,468 INFO L226 Difference]: Without dead ends: 5292 [2021-10-08 14:41:36,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 126.6ms TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-10-08 14:41:36,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 4086. [2021-10-08 14:41:36,532 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) [2021-10-08 14:41:36,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11760 transitions. [2021-10-08 14:41:36,541 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11760 transitions. Word has length 38 [2021-10-08 14:41:36,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:36,541 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11760 transitions. [2021-10-08 14:41:36,541 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) [2021-10-08 14:41:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11760 transitions. [2021-10-08 14:41:36,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:36,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:36,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:36,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-10-08 14:41:36,548 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)] === [2021-10-08 14:41:36,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:36,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1341418813, now seen corresponding path program 120 times [2021-10-08 14:41:36,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:36,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277464504] [2021-10-08 14:41:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:36,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:36,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:36,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277464504] [2021-10-08 14:41:36,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277464504] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:36,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:36,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:36,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109158170] [2021-10-08 14:41:36,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:36,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:36,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:36,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:36,640 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) [2021-10-08 14:41:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:36,976 INFO L93 Difference]: Finished difference Result 4408 states and 12546 transitions. [2021-10-08 14:41:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:36,976 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 [2021-10-08 14:41:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:36,984 INFO L225 Difference]: With dead ends: 4408 [2021-10-08 14:41:36,984 INFO L226 Difference]: Without dead ends: 4392 [2021-10-08 14:41:36,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 132.4ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:41:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2021-10-08 14:41:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 4104. [2021-10-08 14:41:37,041 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) [2021-10-08 14:41:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 11809 transitions. [2021-10-08 14:41:37,050 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 11809 transitions. Word has length 38 [2021-10-08 14:41:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:37,051 INFO L470 AbstractCegarLoop]: Abstraction has 4104 states and 11809 transitions. [2021-10-08 14:41:37,051 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) [2021-10-08 14:41:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 11809 transitions. [2021-10-08 14:41:37,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:37,057 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:37,057 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:37,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-10-08 14:41:37,057 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)] === [2021-10-08 14:41:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash 590782761, now seen corresponding path program 121 times [2021-10-08 14:41:37,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:37,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778838163] [2021-10-08 14:41:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:37,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:37,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:37,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778838163] [2021-10-08 14:41:37,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778838163] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:37,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:37,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:37,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997525438] [2021-10-08 14:41:37,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:37,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:37,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:37,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:37,145 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) [2021-10-08 14:41:37,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:37,468 INFO L93 Difference]: Finished difference Result 4358 states and 12418 transitions. [2021-10-08 14:41:37,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:37,468 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 [2021-10-08 14:41:37,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:37,476 INFO L225 Difference]: With dead ends: 4358 [2021-10-08 14:41:37,476 INFO L226 Difference]: Without dead ends: 4328 [2021-10-08 14:41:37,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 138.9ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:37,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4328 states. [2021-10-08 14:41:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4328 to 4086. [2021-10-08 14:41:37,527 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) [2021-10-08 14:41:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11758 transitions. [2021-10-08 14:41:37,536 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11758 transitions. Word has length 38 [2021-10-08 14:41:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:37,536 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11758 transitions. [2021-10-08 14:41:37,537 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) [2021-10-08 14:41:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11758 transitions. [2021-10-08 14:41:37,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:37,543 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:37,543 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:37,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-10-08 14:41:37,543 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)] === [2021-10-08 14:41:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash -343185135, now seen corresponding path program 122 times [2021-10-08 14:41:37,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:37,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292674607] [2021-10-08 14:41:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:37,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:37,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:37,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:37,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292674607] [2021-10-08 14:41:37,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292674607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:37,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:37,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:37,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151003774] [2021-10-08 14:41:37,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:37,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:37,680 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) [2021-10-08 14:41:38,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:38,140 INFO L93 Difference]: Finished difference Result 4360 states and 12413 transitions. [2021-10-08 14:41:38,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:41:38,140 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 [2021-10-08 14:41:38,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:38,148 INFO L225 Difference]: With dead ends: 4360 [2021-10-08 14:41:38,149 INFO L226 Difference]: Without dead ends: 4336 [2021-10-08 14:41:38,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 199.4ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:38,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2021-10-08 14:41:38,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4086. [2021-10-08 14:41:38,206 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) [2021-10-08 14:41:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4086 states to 4086 states and 11756 transitions. [2021-10-08 14:41:38,215 INFO L78 Accepts]: Start accepts. Automaton has 4086 states and 11756 transitions. Word has length 38 [2021-10-08 14:41:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:38,216 INFO L470 AbstractCegarLoop]: Abstraction has 4086 states and 11756 transitions. [2021-10-08 14:41:38,216 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) [2021-10-08 14:41:38,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4086 states and 11756 transitions. [2021-10-08 14:41:38,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:38,222 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:38,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:38,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-10-08 14:41:38,222 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)] === [2021-10-08 14:41:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:38,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1649210443, now seen corresponding path program 123 times [2021-10-08 14:41:38,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:38,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671069466] [2021-10-08 14:41:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:38,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:38,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:38,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671069466] [2021-10-08 14:41:38,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671069466] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:38,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:38,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:38,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768599348] [2021-10-08 14:41:38,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:38,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:38,349 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) [2021-10-08 14:41:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:38,975 INFO L93 Difference]: Finished difference Result 4548 states and 12795 transitions. [2021-10-08 14:41:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:38,976 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 [2021-10-08 14:41:38,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:38,984 INFO L225 Difference]: With dead ends: 4548 [2021-10-08 14:41:38,984 INFO L226 Difference]: Without dead ends: 4486 [2021-10-08 14:41:38,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 238.8ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:41:38,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2021-10-08 14:41:39,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 4154. [2021-10-08 14:41:39,038 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) [2021-10-08 14:41:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11933 transitions. [2021-10-08 14:41:39,093 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11933 transitions. Word has length 38 [2021-10-08 14:41:39,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:39,093 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11933 transitions. [2021-10-08 14:41:39,093 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) [2021-10-08 14:41:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11933 transitions. [2021-10-08 14:41:39,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:39,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:39,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:39,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-10-08 14:41:39,100 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)] === [2021-10-08 14:41:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:39,100 INFO L82 PathProgramCache]: Analyzing trace with hash -349614713, now seen corresponding path program 124 times [2021-10-08 14:41:39,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:39,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282948674] [2021-10-08 14:41:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:39,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:39,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:39,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:39,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282948674] [2021-10-08 14:41:39,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282948674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:39,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:39,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:39,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063338631] [2021-10-08 14:41:39,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:39,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:39,200 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) [2021-10-08 14:41:39,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:39,710 INFO L93 Difference]: Finished difference Result 5260 states and 14534 transitions. [2021-10-08 14:41:39,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:39,710 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 [2021-10-08 14:41:39,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:39,720 INFO L225 Difference]: With dead ends: 5260 [2021-10-08 14:41:39,721 INFO L226 Difference]: Without dead ends: 5196 [2021-10-08 14:41:39,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 144.3ms TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:39,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2021-10-08 14:41:39,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4154. [2021-10-08 14:41:39,784 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) [2021-10-08 14:41:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11933 transitions. [2021-10-08 14:41:39,795 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11933 transitions. Word has length 38 [2021-10-08 14:41:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:39,795 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11933 transitions. [2021-10-08 14:41:39,796 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) [2021-10-08 14:41:39,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11933 transitions. [2021-10-08 14:41:39,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:39,803 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:39,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:39,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-10-08 14:41:39,804 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)] === [2021-10-08 14:41:39,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:39,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1919714835, now seen corresponding path program 125 times [2021-10-08 14:41:39,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:39,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028862006] [2021-10-08 14:41:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:39,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:39,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:39,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028862006] [2021-10-08 14:41:39,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028862006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:39,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:39,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:39,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120473717] [2021-10-08 14:41:39,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:39,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:39,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:39,909 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) [2021-10-08 14:41:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:40,369 INFO L93 Difference]: Finished difference Result 4514 states and 12701 transitions. [2021-10-08 14:41:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:41:40,370 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 [2021-10-08 14:41:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:40,378 INFO L225 Difference]: With dead ends: 4514 [2021-10-08 14:41:40,379 INFO L226 Difference]: Without dead ends: 4424 [2021-10-08 14:41:40,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4424 states. [2021-10-08 14:41:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4424 to 4094. [2021-10-08 14:41:40,435 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) [2021-10-08 14:41:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 11770 transitions. [2021-10-08 14:41:40,444 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 11770 transitions. Word has length 38 [2021-10-08 14:41:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:40,444 INFO L470 AbstractCegarLoop]: Abstraction has 4094 states and 11770 transitions. [2021-10-08 14:41:40,445 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) [2021-10-08 14:41:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 11770 transitions. [2021-10-08 14:41:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:40,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:40,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:40,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-10-08 14:41:40,451 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)] === [2021-10-08 14:41:40,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:40,452 INFO L82 PathProgramCache]: Analyzing trace with hash 588056673, now seen corresponding path program 126 times [2021-10-08 14:41:40,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:40,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992798136] [2021-10-08 14:41:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:40,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:40,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:40,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992798136] [2021-10-08 14:41:40,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992798136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:40,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:40,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:40,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240526898] [2021-10-08 14:41:40,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:40,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:40,563 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) [2021-10-08 14:41:41,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:41,103 INFO L93 Difference]: Finished difference Result 4482 states and 12612 transitions. [2021-10-08 14:41:41,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:41,104 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 [2021-10-08 14:41:41,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:41,113 INFO L225 Difference]: With dead ends: 4482 [2021-10-08 14:41:41,114 INFO L226 Difference]: Without dead ends: 4410 [2021-10-08 14:41:41,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 192.6ms TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:41:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4410 states. [2021-10-08 14:41:41,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4410 to 4088. [2021-10-08 14:41:41,172 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) [2021-10-08 14:41:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11757 transitions. [2021-10-08 14:41:41,182 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11757 transitions. Word has length 38 [2021-10-08 14:41:41,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:41,182 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11757 transitions. [2021-10-08 14:41:41,182 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) [2021-10-08 14:41:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11757 transitions. [2021-10-08 14:41:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:41,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:41,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:41,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-10-08 14:41:41,191 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)] === [2021-10-08 14:41:41,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:41,191 INFO L82 PathProgramCache]: Analyzing trace with hash 879986273, now seen corresponding path program 127 times [2021-10-08 14:41:41,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:41,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822721299] [2021-10-08 14:41:41,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:41,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:41,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:41,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822721299] [2021-10-08 14:41:41,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822721299] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:41,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:41,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:41,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398820176] [2021-10-08 14:41:41,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:41,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:41,315 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) [2021-10-08 14:41:41,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:41,767 INFO L93 Difference]: Finished difference Result 4992 states and 13908 transitions. [2021-10-08 14:41:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:41:41,768 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 [2021-10-08 14:41:41,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:41,778 INFO L225 Difference]: With dead ends: 4992 [2021-10-08 14:41:41,779 INFO L226 Difference]: Without dead ends: 4984 [2021-10-08 14:41:41,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:41:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4984 states. [2021-10-08 14:41:41,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4984 to 4092. [2021-10-08 14:41:41,842 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) [2021-10-08 14:41:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 11767 transitions. [2021-10-08 14:41:41,853 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 11767 transitions. Word has length 38 [2021-10-08 14:41:41,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:41,854 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 11767 transitions. [2021-10-08 14:41:41,854 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) [2021-10-08 14:41:41,854 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 11767 transitions. [2021-10-08 14:41:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:41,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:41,861 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] [2021-10-08 14:41:41,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-10-08 14:41:41,862 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)] === [2021-10-08 14:41:41,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:41,862 INFO L82 PathProgramCache]: Analyzing trace with hash 898659457, now seen corresponding path program 128 times [2021-10-08 14:41:41,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:41,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855912606] [2021-10-08 14:41:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:41,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:41,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:41,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855912606] [2021-10-08 14:41:41,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855912606] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:41,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:41,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:41,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123802144] [2021-10-08 14:41:41,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:41,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:41,960 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) [2021-10-08 14:41:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:42,367 INFO L93 Difference]: Finished difference Result 4460 states and 12652 transitions. [2021-10-08 14:41:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:42,368 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 [2021-10-08 14:41:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:42,376 INFO L225 Difference]: With dead ends: 4460 [2021-10-08 14:41:42,376 INFO L226 Difference]: Without dead ends: 4444 [2021-10-08 14:41:42,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 156.3ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:42,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2021-10-08 14:41:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 4110. [2021-10-08 14:41:42,433 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) [2021-10-08 14:41:42,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4110 states to 4110 states and 11816 transitions. [2021-10-08 14:41:42,443 INFO L78 Accepts]: Start accepts. Automaton has 4110 states and 11816 transitions. Word has length 38 [2021-10-08 14:41:42,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:42,444 INFO L470 AbstractCegarLoop]: Abstraction has 4110 states and 11816 transitions. [2021-10-08 14:41:42,444 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) [2021-10-08 14:41:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4110 states and 11816 transitions. [2021-10-08 14:41:42,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:42,451 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:42,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:42,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-10-08 14:41:42,451 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)] === [2021-10-08 14:41:42,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:42,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1464106265, now seen corresponding path program 129 times [2021-10-08 14:41:42,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:42,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669932601] [2021-10-08 14:41:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:42,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:42,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:42,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:42,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669932601] [2021-10-08 14:41:42,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669932601] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:42,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:42,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:42,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544297524] [2021-10-08 14:41:42,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:42,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:42,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:42,542 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) [2021-10-08 14:41:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:42,902 INFO L93 Difference]: Finished difference Result 4410 states and 12524 transitions. [2021-10-08 14:41:42,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:42,903 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 [2021-10-08 14:41:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:42,918 INFO L225 Difference]: With dead ends: 4410 [2021-10-08 14:41:42,918 INFO L226 Difference]: Without dead ends: 4380 [2021-10-08 14:41:42,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:41:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2021-10-08 14:41:43,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 4092. [2021-10-08 14:41:43,017 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) [2021-10-08 14:41:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4092 states to 4092 states and 11765 transitions. [2021-10-08 14:41:43,032 INFO L78 Accepts]: Start accepts. Automaton has 4092 states and 11765 transitions. Word has length 38 [2021-10-08 14:41:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:43,033 INFO L470 AbstractCegarLoop]: Abstraction has 4092 states and 11765 transitions. [2021-10-08 14:41:43,033 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) [2021-10-08 14:41:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 4092 states and 11765 transitions. [2021-10-08 14:41:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:43,042 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:43,042 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:43,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-10-08 14:41:43,043 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)] === [2021-10-08 14:41:43,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:43,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1896893135, now seen corresponding path program 130 times [2021-10-08 14:41:43,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:43,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089378452] [2021-10-08 14:41:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:43,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:43,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:43,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:43,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089378452] [2021-10-08 14:41:43,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089378452] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:43,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:43,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:43,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469232369] [2021-10-08 14:41:43,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:43,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:43,189 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) [2021-10-08 14:41:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:43,645 INFO L93 Difference]: Finished difference Result 4420 states and 12535 transitions. [2021-10-08 14:41:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:43,646 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 [2021-10-08 14:41:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:43,654 INFO L225 Difference]: With dead ends: 4420 [2021-10-08 14:41:43,654 INFO L226 Difference]: Without dead ends: 4396 [2021-10-08 14:41:43,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 203.4ms TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:43,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2021-10-08 14:41:43,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4088. [2021-10-08 14:41:43,711 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) [2021-10-08 14:41:43,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11755 transitions. [2021-10-08 14:41:43,720 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11755 transitions. Word has length 38 [2021-10-08 14:41:43,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:43,721 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11755 transitions. [2021-10-08 14:41:43,721 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) [2021-10-08 14:41:43,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11755 transitions. [2021-10-08 14:41:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:43,727 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:43,727 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:43,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-10-08 14:41:43,727 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)] === [2021-10-08 14:41:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash 691089211, now seen corresponding path program 131 times [2021-10-08 14:41:43,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:43,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731561862] [2021-10-08 14:41:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:43,728 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:43,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:43,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731561862] [2021-10-08 14:41:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731561862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:43,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:43,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:43,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947144662] [2021-10-08 14:41:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:43,857 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) [2021-10-08 14:41:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:44,163 INFO L93 Difference]: Finished difference Result 4144 states and 11853 transitions. [2021-10-08 14:41:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:41:44,163 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 [2021-10-08 14:41:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:44,171 INFO L225 Difference]: With dead ends: 4144 [2021-10-08 14:41:44,172 INFO L226 Difference]: Without dead ends: 4110 [2021-10-08 14:41:44,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 153.9ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:41:44,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4110 states. [2021-10-08 14:41:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4110 to 4088. [2021-10-08 14:41:44,225 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) [2021-10-08 14:41:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11745 transitions. [2021-10-08 14:41:44,235 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11745 transitions. Word has length 38 [2021-10-08 14:41:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:44,235 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11745 transitions. [2021-10-08 14:41:44,235 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) [2021-10-08 14:41:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11745 transitions. [2021-10-08 14:41:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:44,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:44,242 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:44,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-10-08 14:41:44,242 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)] === [2021-10-08 14:41:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:44,243 INFO L82 PathProgramCache]: Analyzing trace with hash -605407197, now seen corresponding path program 132 times [2021-10-08 14:41:44,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:44,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405854158] [2021-10-08 14:41:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:44,243 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:44,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:44,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405854158] [2021-10-08 14:41:44,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405854158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:44,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:44,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:44,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129114507] [2021-10-08 14:41:44,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:44,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:44,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:44,340 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) [2021-10-08 14:41:44,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:44,860 INFO L93 Difference]: Finished difference Result 4542 states and 12768 transitions. [2021-10-08 14:41:44,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:41:44,861 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 [2021-10-08 14:41:44,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:44,869 INFO L225 Difference]: With dead ends: 4542 [2021-10-08 14:41:44,869 INFO L226 Difference]: Without dead ends: 4480 [2021-10-08 14:41:44,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 189.7ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:41:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2021-10-08 14:41:44,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4156. [2021-10-08 14:41:44,928 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) [2021-10-08 14:41:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 11922 transitions. [2021-10-08 14:41:44,938 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 11922 transitions. Word has length 38 [2021-10-08 14:41:44,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 4156 states and 11922 transitions. [2021-10-08 14:41:44,939 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) [2021-10-08 14:41:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 11922 transitions. [2021-10-08 14:41:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:44,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:44,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:44,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-10-08 14:41:44,946 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)] === [2021-10-08 14:41:44,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:44,946 INFO L82 PathProgramCache]: Analyzing trace with hash 694188533, now seen corresponding path program 133 times [2021-10-08 14:41:44,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:44,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888481912] [2021-10-08 14:41:44,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:44,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:45,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:45,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888481912] [2021-10-08 14:41:45,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888481912] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:45,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:45,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:45,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371738679] [2021-10-08 14:41:45,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:45,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:45,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:45,054 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) [2021-10-08 14:41:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:45,715 INFO L93 Difference]: Finished difference Result 5064 states and 13989 transitions. [2021-10-08 14:41:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:45,715 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 [2021-10-08 14:41:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:45,724 INFO L225 Difference]: With dead ends: 5064 [2021-10-08 14:41:45,724 INFO L226 Difference]: Without dead ends: 5000 [2021-10-08 14:41:45,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 180.4ms TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2021-10-08 14:41:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4156. [2021-10-08 14:41:45,786 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) [2021-10-08 14:41:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4156 states to 4156 states and 11922 transitions. [2021-10-08 14:41:45,795 INFO L78 Accepts]: Start accepts. Automaton has 4156 states and 11922 transitions. Word has length 38 [2021-10-08 14:41:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:45,795 INFO L470 AbstractCegarLoop]: Abstraction has 4156 states and 11922 transitions. [2021-10-08 14:41:45,795 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) [2021-10-08 14:41:45,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4156 states and 11922 transitions. [2021-10-08 14:41:45,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:45,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:45,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:45,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-10-08 14:41:45,802 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)] === [2021-10-08 14:41:45,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:45,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1331449215, now seen corresponding path program 134 times [2021-10-08 14:41:45,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:45,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556339516] [2021-10-08 14:41:45,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:45,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:45,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:45,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556339516] [2021-10-08 14:41:45,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556339516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:45,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:45,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:45,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518854888] [2021-10-08 14:41:45,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:45,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:45,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:45,916 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) [2021-10-08 14:41:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:46,513 INFO L93 Difference]: Finished difference Result 4566 states and 12801 transitions. [2021-10-08 14:41:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:41:46,513 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 [2021-10-08 14:41:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:46,522 INFO L225 Difference]: With dead ends: 4566 [2021-10-08 14:41:46,522 INFO L226 Difference]: Without dead ends: 4476 [2021-10-08 14:41:46,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 191.9ms TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:41:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4476 states. [2021-10-08 14:41:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4476 to 4096. [2021-10-08 14:41:46,577 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) [2021-10-08 14:41:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4096 states to 4096 states and 11759 transitions. [2021-10-08 14:41:46,587 INFO L78 Accepts]: Start accepts. Automaton has 4096 states and 11759 transitions. Word has length 38 [2021-10-08 14:41:46,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:46,587 INFO L470 AbstractCegarLoop]: Abstraction has 4096 states and 11759 transitions. [2021-10-08 14:41:46,587 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) [2021-10-08 14:41:46,587 INFO L276 IsEmpty]: Start isEmpty. Operand 4096 states and 11759 transitions. [2021-10-08 14:41:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:46,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:46,593 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:46,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-10-08 14:41:46,594 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)] === [2021-10-08 14:41:46,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:46,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1631859919, now seen corresponding path program 135 times [2021-10-08 14:41:46,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:46,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631704860] [2021-10-08 14:41:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:46,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:46,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:46,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:46,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:46,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631704860] [2021-10-08 14:41:46,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631704860] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:46,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:46,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:46,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754187087] [2021-10-08 14:41:46,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:46,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:46,711 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) [2021-10-08 14:41:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:47,327 INFO L93 Difference]: Finished difference Result 4534 states and 12712 transitions. [2021-10-08 14:41:47,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:41:47,328 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 [2021-10-08 14:41:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:47,337 INFO L225 Difference]: With dead ends: 4534 [2021-10-08 14:41:47,337 INFO L226 Difference]: Without dead ends: 4466 [2021-10-08 14:41:47,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 240.2ms TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2021-10-08 14:41:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 4088. [2021-10-08 14:41:47,394 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) [2021-10-08 14:41:47,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 11741 transitions. [2021-10-08 14:41:47,404 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 11741 transitions. Word has length 38 [2021-10-08 14:41:47,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:47,404 INFO L470 AbstractCegarLoop]: Abstraction has 4088 states and 11741 transitions. [2021-10-08 14:41:47,404 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) [2021-10-08 14:41:47,404 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 11741 transitions. [2021-10-08 14:41:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:47,411 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:47,411 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:47,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-10-08 14:41:47,411 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)] === [2021-10-08 14:41:47,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:47,411 INFO L82 PathProgramCache]: Analyzing trace with hash -505185813, now seen corresponding path program 136 times [2021-10-08 14:41:47,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:47,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231909531] [2021-10-08 14:41:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:47,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:47,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:47,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:47,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231909531] [2021-10-08 14:41:47,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231909531] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:47,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:41:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160503300] [2021-10-08 14:41:47,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:41:47,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:41:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:41:47,526 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) [2021-10-08 14:41:47,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:47,912 INFO L93 Difference]: Finished difference Result 4258 states and 12062 transitions. [2021-10-08 14:41:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:47,912 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 [2021-10-08 14:41:47,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:47,921 INFO L225 Difference]: With dead ends: 4258 [2021-10-08 14:41:47,921 INFO L226 Difference]: Without dead ends: 4164 [2021-10-08 14:41:47,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 164.7ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:47,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4164 states. [2021-10-08 14:41:47,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4164 to 4064. [2021-10-08 14:41:47,974 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) [2021-10-08 14:41:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 11677 transitions. [2021-10-08 14:41:47,983 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 11677 transitions. Word has length 38 [2021-10-08 14:41:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:47,983 INFO L470 AbstractCegarLoop]: Abstraction has 4064 states and 11677 transitions. [2021-10-08 14:41:47,983 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) [2021-10-08 14:41:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 11677 transitions. [2021-10-08 14:41:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:47,989 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:47,990 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] [2021-10-08 14:41:47,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-10-08 14:41:47,990 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)] === [2021-10-08 14:41:47,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:47,990 INFO L82 PathProgramCache]: Analyzing trace with hash 62947225, now seen corresponding path program 137 times [2021-10-08 14:41:47,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:47,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935820804] [2021-10-08 14:41:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:47,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:48,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:48,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:48,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935820804] [2021-10-08 14:41:48,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935820804] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:48,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:48,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:48,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236975796] [2021-10-08 14:41:48,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:48,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:48,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:48,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:48,092 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) [2021-10-08 14:41:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:48,619 INFO L93 Difference]: Finished difference Result 5600 states and 15444 transitions. [2021-10-08 14:41:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:48,619 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 [2021-10-08 14:41:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:48,630 INFO L225 Difference]: With dead ends: 5600 [2021-10-08 14:41:48,630 INFO L226 Difference]: Without dead ends: 5592 [2021-10-08 14:41:48,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 138.8ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:48,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2021-10-08 14:41:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 4080. [2021-10-08 14:41:48,694 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) [2021-10-08 14:41:48,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 11723 transitions. [2021-10-08 14:41:48,703 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 11723 transitions. Word has length 38 [2021-10-08 14:41:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:48,704 INFO L470 AbstractCegarLoop]: Abstraction has 4080 states and 11723 transitions. [2021-10-08 14:41:48,704 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) [2021-10-08 14:41:48,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 11723 transitions. [2021-10-08 14:41:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:48,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:48,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:48,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-10-08 14:41:48,710 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)] === [2021-10-08 14:41:48,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:48,711 INFO L82 PathProgramCache]: Analyzing trace with hash -183089431, now seen corresponding path program 138 times [2021-10-08 14:41:48,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:48,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587188673] [2021-10-08 14:41:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:48,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:48,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:48,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587188673] [2021-10-08 14:41:48,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587188673] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:48,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:48,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:48,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074300323] [2021-10-08 14:41:48,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:48,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:48,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:48,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:48,821 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) [2021-10-08 14:41:49,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:49,491 INFO L93 Difference]: Finished difference Result 5854 states and 16098 transitions. [2021-10-08 14:41:49,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:41:49,491 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 [2021-10-08 14:41:49,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:49,503 INFO L225 Difference]: With dead ends: 5854 [2021-10-08 14:41:49,503 INFO L226 Difference]: Without dead ends: 5832 [2021-10-08 14:41:49,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 179.0ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:41:49,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5832 states. [2021-10-08 14:41:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5832 to 4076. [2021-10-08 14:41:49,569 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) [2021-10-08 14:41:49,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 11712 transitions. [2021-10-08 14:41:49,579 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 11712 transitions. Word has length 38 [2021-10-08 14:41:49,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:49,579 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 11712 transitions. [2021-10-08 14:41:49,579 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) [2021-10-08 14:41:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 11712 transitions. [2021-10-08 14:41:49,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:49,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:49,585 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:49,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-10-08 14:41:49,586 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)] === [2021-10-08 14:41:49,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:49,586 INFO L82 PathProgramCache]: Analyzing trace with hash -953445929, now seen corresponding path program 139 times [2021-10-08 14:41:49,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:49,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261331945] [2021-10-08 14:41:49,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:49,587 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:49,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:49,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261331945] [2021-10-08 14:41:49,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261331945] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:49,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:49,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:49,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206954841] [2021-10-08 14:41:49,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:49,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:49,698 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) [2021-10-08 14:41:50,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:50,340 INFO L93 Difference]: Finished difference Result 5432 states and 14848 transitions. [2021-10-08 14:41:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:41:50,341 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 [2021-10-08 14:41:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:50,351 INFO L225 Difference]: With dead ends: 5432 [2021-10-08 14:41:50,351 INFO L226 Difference]: Without dead ends: 5416 [2021-10-08 14:41:50,351 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 [2021-10-08 14:41:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2021-10-08 14:41:50,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4098. [2021-10-08 14:41:50,415 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) [2021-10-08 14:41:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 11775 transitions. [2021-10-08 14:41:50,425 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 11775 transitions. Word has length 38 [2021-10-08 14:41:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:50,425 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 11775 transitions. [2021-10-08 14:41:50,426 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) [2021-10-08 14:41:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 11775 transitions. [2021-10-08 14:41:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:50,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:50,432 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:50,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-10-08 14:41:50,432 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)] === [2021-10-08 14:41:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:50,433 INFO L82 PathProgramCache]: Analyzing trace with hash 978755645, now seen corresponding path program 140 times [2021-10-08 14:41:50,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:50,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765074791] [2021-10-08 14:41:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:50,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:50,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:50,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:50,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765074791] [2021-10-08 14:41:50,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765074791] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:50,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:50,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:50,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813653373] [2021-10-08 14:41:50,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:50,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:50,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:50,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:50,542 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) [2021-10-08 14:41:51,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:51,027 INFO L93 Difference]: Finished difference Result 4706 states and 13171 transitions. [2021-10-08 14:41:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:51,028 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 [2021-10-08 14:41:51,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:51,037 INFO L225 Difference]: With dead ends: 4706 [2021-10-08 14:41:51,038 INFO L226 Difference]: Without dead ends: 4676 [2021-10-08 14:41:51,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2021-10-08 14:41:51,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4076. [2021-10-08 14:41:51,097 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) [2021-10-08 14:41:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4076 states to 4076 states and 11706 transitions. [2021-10-08 14:41:51,106 INFO L78 Accepts]: Start accepts. Automaton has 4076 states and 11706 transitions. Word has length 38 [2021-10-08 14:41:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:51,107 INFO L470 AbstractCegarLoop]: Abstraction has 4076 states and 11706 transitions. [2021-10-08 14:41:51,107 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) [2021-10-08 14:41:51,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4076 states and 11706 transitions. [2021-10-08 14:41:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:51,113 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:51,113 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:51,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-10-08 14:41:51,113 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)] === [2021-10-08 14:41:51,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:51,114 INFO L82 PathProgramCache]: Analyzing trace with hash -236684329, now seen corresponding path program 141 times [2021-10-08 14:41:51,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:51,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948085107] [2021-10-08 14:41:51,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:51,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:51,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:51,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:51,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948085107] [2021-10-08 14:41:51,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948085107] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:51,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:51,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:51,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757056090] [2021-10-08 14:41:51,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:51,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:51,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:51,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:51,237 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) [2021-10-08 14:41:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:52,031 INFO L93 Difference]: Finished difference Result 5784 states and 15784 transitions. [2021-10-08 14:41:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 14:41:52,032 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 [2021-10-08 14:41:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:52,043 INFO L225 Difference]: With dead ends: 5784 [2021-10-08 14:41:52,044 INFO L226 Difference]: Without dead ends: 5718 [2021-10-08 14:41:52,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 239.0ms TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:41:52,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5718 states. [2021-10-08 14:41:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5718 to 4154. [2021-10-08 14:41:52,117 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) [2021-10-08 14:41:52,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 11906 transitions. [2021-10-08 14:41:52,127 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 11906 transitions. Word has length 38 [2021-10-08 14:41:52,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:52,128 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 11906 transitions. [2021-10-08 14:41:52,128 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) [2021-10-08 14:41:52,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 11906 transitions. [2021-10-08 14:41:52,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:52,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:52,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:52,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-10-08 14:41:52,135 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)] === [2021-10-08 14:41:52,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:52,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1941553901, now seen corresponding path program 142 times [2021-10-08 14:41:52,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:52,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460692424] [2021-10-08 14:41:52,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:52,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:52,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:52,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460692424] [2021-10-08 14:41:52,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460692424] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:52,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:52,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:52,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341724149] [2021-10-08 14:41:52,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:52,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:52,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:52,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:52,240 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) [2021-10-08 14:41:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:52,850 INFO L93 Difference]: Finished difference Result 5026 states and 14039 transitions. [2021-10-08 14:41:52,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:41:52,850 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 [2021-10-08 14:41:52,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:52,858 INFO L225 Difference]: With dead ends: 5026 [2021-10-08 14:41:52,858 INFO L226 Difference]: Without dead ends: 4928 [2021-10-08 14:41:52,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 190.9ms TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:41:52,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2021-10-08 14:41:52,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 4064. [2021-10-08 14:41:52,912 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) [2021-10-08 14:41:52,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4064 states to 4064 states and 11673 transitions. [2021-10-08 14:41:52,921 INFO L78 Accepts]: Start accepts. Automaton has 4064 states and 11673 transitions. Word has length 38 [2021-10-08 14:41:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:52,921 INFO L470 AbstractCegarLoop]: Abstraction has 4064 states and 11673 transitions. [2021-10-08 14:41:52,922 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) [2021-10-08 14:41:52,922 INFO L276 IsEmpty]: Start isEmpty. Operand 4064 states and 11673 transitions. [2021-10-08 14:41:52,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:52,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:52,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:52,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-10-08 14:41:52,928 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)] === [2021-10-08 14:41:52,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:52,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1485872565, now seen corresponding path program 143 times [2021-10-08 14:41:52,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:52,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302001356] [2021-10-08 14:41:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:52,929 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:53,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:53,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302001356] [2021-10-08 14:41:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302001356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:53,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:53,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:41:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105280901] [2021-10-08 14:41:53,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:41:53,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:41:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:41:53,023 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) [2021-10-08 14:41:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:53,319 INFO L93 Difference]: Finished difference Result 3392 states and 9302 transitions. [2021-10-08 14:41:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 14:41:53,319 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 [2021-10-08 14:41:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:53,324 INFO L225 Difference]: With dead ends: 3392 [2021-10-08 14:41:53,325 INFO L226 Difference]: Without dead ends: 2840 [2021-10-08 14:41:53,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 79.2ms TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-08 14:41:53,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-10-08 14:41:53,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2562. [2021-10-08 14:41:53,358 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) [2021-10-08 14:41:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7259 transitions. [2021-10-08 14:41:53,364 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7259 transitions. Word has length 38 [2021-10-08 14:41:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:53,364 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 7259 transitions. [2021-10-08 14:41:53,364 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) [2021-10-08 14:41:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7259 transitions. [2021-10-08 14:41:53,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:53,368 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:53,368 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] [2021-10-08 14:41:53,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-10-08 14:41:53,368 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)] === [2021-10-08 14:41:53,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:53,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1978201605, now seen corresponding path program 144 times [2021-10-08 14:41:53,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:53,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343519014] [2021-10-08 14:41:53,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:53,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:53,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:53,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343519014] [2021-10-08 14:41:53,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343519014] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:53,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:53,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:53,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535045605] [2021-10-08 14:41:53,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:53,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:53,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:53,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:53,466 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) [2021-10-08 14:41:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:53,954 INFO L93 Difference]: Finished difference Result 2928 states and 8086 transitions. [2021-10-08 14:41:53,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:41:53,954 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 [2021-10-08 14:41:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:53,959 INFO L225 Difference]: With dead ends: 2928 [2021-10-08 14:41:53,960 INFO L226 Difference]: Without dead ends: 2916 [2021-10-08 14:41:53,960 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 [2021-10-08 14:41:53,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2021-10-08 14:41:53,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2562. [2021-10-08 14:41:53,994 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) [2021-10-08 14:41:53,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 7253 transitions. [2021-10-08 14:41:54,000 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 7253 transitions. Word has length 38 [2021-10-08 14:41:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:54,000 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 7253 transitions. [2021-10-08 14:41:54,000 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) [2021-10-08 14:41:54,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 7253 transitions. [2021-10-08 14:41:54,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:54,004 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:54,004 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:54,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-10-08 14:41:54,004 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)] === [2021-10-08 14:41:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:54,005 INFO L82 PathProgramCache]: Analyzing trace with hash -355311659, now seen corresponding path program 145 times [2021-10-08 14:41:54,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:54,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369448822] [2021-10-08 14:41:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:54,005 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:54,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:54,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369448822] [2021-10-08 14:41:54,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369448822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:54,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:54,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:54,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111338839] [2021-10-08 14:41:54,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:54,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:54,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:54,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:54,101 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) [2021-10-08 14:41:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:54,604 INFO L93 Difference]: Finished difference Result 3582 states and 9804 transitions. [2021-10-08 14:41:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:54,604 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 [2021-10-08 14:41:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:54,612 INFO L225 Difference]: With dead ends: 3582 [2021-10-08 14:41:54,612 INFO L226 Difference]: Without dead ends: 3574 [2021-10-08 14:41:54,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:41:54,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-10-08 14:41:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2592. [2021-10-08 14:41:54,655 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) [2021-10-08 14:41:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 7328 transitions. [2021-10-08 14:41:54,661 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 7328 transitions. Word has length 38 [2021-10-08 14:41:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:54,661 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 7328 transitions. [2021-10-08 14:41:54,661 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) [2021-10-08 14:41:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 7328 transitions. [2021-10-08 14:41:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:54,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:54,665 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:54,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-10-08 14:41:54,666 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)] === [2021-10-08 14:41:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:54,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1414452133, now seen corresponding path program 146 times [2021-10-08 14:41:54,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:54,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678863914] [2021-10-08 14:41:54,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:54,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:54,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:54,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678863914] [2021-10-08 14:41:54,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678863914] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:54,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:54,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:54,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22967648] [2021-10-08 14:41:54,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:54,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:54,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:54,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:54,780 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) [2021-10-08 14:41:55,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:55,326 INFO L93 Difference]: Finished difference Result 3644 states and 9945 transitions. [2021-10-08 14:41:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:41:55,326 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 [2021-10-08 14:41:55,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:55,332 INFO L225 Difference]: With dead ends: 3644 [2021-10-08 14:41:55,333 INFO L226 Difference]: Without dead ends: 3630 [2021-10-08 14:41:55,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 195.8ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:41:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3630 states. [2021-10-08 14:41:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3630 to 2584. [2021-10-08 14:41:55,372 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) [2021-10-08 14:41:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 7310 transitions. [2021-10-08 14:41:55,377 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 7310 transitions. Word has length 38 [2021-10-08 14:41:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:55,378 INFO L470 AbstractCegarLoop]: Abstraction has 2584 states and 7310 transitions. [2021-10-08 14:41:55,378 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) [2021-10-08 14:41:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 7310 transitions. [2021-10-08 14:41:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:55,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:55,384 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:55,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-10-08 14:41:55,384 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)] === [2021-10-08 14:41:55,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:55,385 INFO L82 PathProgramCache]: Analyzing trace with hash 185201903, now seen corresponding path program 147 times [2021-10-08 14:41:55,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:55,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813620158] [2021-10-08 14:41:55,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:55,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:55,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:55,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:55,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813620158] [2021-10-08 14:41:55,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813620158] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:55,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:55,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:55,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101494630] [2021-10-08 14:41:55,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:55,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:55,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:55,508 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) [2021-10-08 14:41:56,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:56,052 INFO L93 Difference]: Finished difference Result 3036 states and 8320 transitions. [2021-10-08 14:41:56,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:41:56,053 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 [2021-10-08 14:41:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:56,058 INFO L225 Difference]: With dead ends: 3036 [2021-10-08 14:41:56,058 INFO L226 Difference]: Without dead ends: 2942 [2021-10-08 14:41:56,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 186.9ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:41:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-10-08 14:41:56,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2634. [2021-10-08 14:41:56,093 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) [2021-10-08 14:41:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 7407 transitions. [2021-10-08 14:41:56,098 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 7407 transitions. Word has length 38 [2021-10-08 14:41:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:56,099 INFO L470 AbstractCegarLoop]: Abstraction has 2634 states and 7407 transitions. [2021-10-08 14:41:56,099 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) [2021-10-08 14:41:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 7407 transitions. [2021-10-08 14:41:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:56,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:56,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-10-08 14:41:56,103 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)] === [2021-10-08 14:41:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:56,103 INFO L82 PathProgramCache]: Analyzing trace with hash -565551179, now seen corresponding path program 148 times [2021-10-08 14:41:56,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:56,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510965518] [2021-10-08 14:41:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:56,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:56,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:56,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510965518] [2021-10-08 14:41:56,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510965518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:56,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:56,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:56,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892066785] [2021-10-08 14:41:56,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:56,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:56,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:56,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:56,215 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) [2021-10-08 14:41:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:56,815 INFO L93 Difference]: Finished difference Result 3592 states and 9690 transitions. [2021-10-08 14:41:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:41:56,816 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 [2021-10-08 14:41:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:56,822 INFO L225 Difference]: With dead ends: 3592 [2021-10-08 14:41:56,822 INFO L226 Difference]: Without dead ends: 3480 [2021-10-08 14:41:56,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 213.9ms TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:41:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2021-10-08 14:41:56,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 2690. [2021-10-08 14:41:56,861 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) [2021-10-08 14:41:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 7547 transitions. [2021-10-08 14:41:56,867 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 7547 transitions. Word has length 38 [2021-10-08 14:41:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:56,867 INFO L470 AbstractCegarLoop]: Abstraction has 2690 states and 7547 transitions. [2021-10-08 14:41:56,867 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) [2021-10-08 14:41:56,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 7547 transitions. [2021-10-08 14:41:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:56,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:56,871 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] [2021-10-08 14:41:56,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-10-08 14:41:56,872 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)] === [2021-10-08 14:41:56,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:56,872 INFO L82 PathProgramCache]: Analyzing trace with hash 743867877, now seen corresponding path program 149 times [2021-10-08 14:41:56,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:56,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912307698] [2021-10-08 14:41:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:56,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:56,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:56,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912307698] [2021-10-08 14:41:56,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912307698] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:56,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:56,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:41:56,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041972261] [2021-10-08 14:41:56,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:41:56,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:41:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:41:56,978 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) [2021-10-08 14:41:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:57,739 INFO L93 Difference]: Finished difference Result 3386 states and 9106 transitions. [2021-10-08 14:41:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 14:41:57,739 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 [2021-10-08 14:41:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:57,745 INFO L225 Difference]: With dead ends: 3386 [2021-10-08 14:41:57,745 INFO L226 Difference]: Without dead ends: 3262 [2021-10-08 14:41:57,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 288.0ms TimeCoverageRelationStatistics Valid=214, Invalid=778, Unknown=0, NotChecked=0, Total=992 [2021-10-08 14:41:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-10-08 14:41:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2682. [2021-10-08 14:41:57,781 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) [2021-10-08 14:41:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7529 transitions. [2021-10-08 14:41:57,787 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7529 transitions. Word has length 38 [2021-10-08 14:41:57,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:57,787 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7529 transitions. [2021-10-08 14:41:57,787 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) [2021-10-08 14:41:57,787 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7529 transitions. [2021-10-08 14:41:57,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:57,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:57,791 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:57,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-10-08 14:41:57,791 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)] === [2021-10-08 14:41:57,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:57,792 INFO L82 PathProgramCache]: Analyzing trace with hash -86993585, now seen corresponding path program 150 times [2021-10-08 14:41:57,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:57,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470722437] [2021-10-08 14:41:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:57,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:57,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:57,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470722437] [2021-10-08 14:41:57,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470722437] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:57,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:57,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:41:57,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315732959] [2021-10-08 14:41:57,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:41:57,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:41:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:41:57,886 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) [2021-10-08 14:41:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:58,255 INFO L93 Difference]: Finished difference Result 3410 states and 9220 transitions. [2021-10-08 14:41:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:41:58,255 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 [2021-10-08 14:41:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:58,262 INFO L225 Difference]: With dead ends: 3410 [2021-10-08 14:41:58,262 INFO L226 Difference]: Without dead ends: 3402 [2021-10-08 14:41:58,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 104.8ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:41:58,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2021-10-08 14:41:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 2694. [2021-10-08 14:41:58,302 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) [2021-10-08 14:41:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 7565 transitions. [2021-10-08 14:41:58,308 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 7565 transitions. Word has length 38 [2021-10-08 14:41:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:58,309 INFO L470 AbstractCegarLoop]: Abstraction has 2694 states and 7565 transitions. [2021-10-08 14:41:58,309 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) [2021-10-08 14:41:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 7565 transitions. [2021-10-08 14:41:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:58,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:58,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:58,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-10-08 14:41:58,313 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)] === [2021-10-08 14:41:58,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:58,314 INFO L82 PathProgramCache]: Analyzing trace with hash 373351151, now seen corresponding path program 151 times [2021-10-08 14:41:58,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:58,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715772628] [2021-10-08 14:41:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:58,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:58,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:58,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715772628] [2021-10-08 14:41:58,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715772628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:58,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:58,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:58,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732292949] [2021-10-08 14:41:58,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:58,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:58,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:58,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:58,423 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) [2021-10-08 14:41:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:58,930 INFO L93 Difference]: Finished difference Result 3466 states and 9309 transitions. [2021-10-08 14:41:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:41:58,930 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 [2021-10-08 14:41:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:58,937 INFO L225 Difference]: With dead ends: 3466 [2021-10-08 14:41:58,937 INFO L226 Difference]: Without dead ends: 3340 [2021-10-08 14:41:58,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 163.6ms TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:41:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2021-10-08 14:41:58,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 2682. [2021-10-08 14:41:58,980 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) [2021-10-08 14:41:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7527 transitions. [2021-10-08 14:41:58,987 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7527 transitions. Word has length 38 [2021-10-08 14:41:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:58,987 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7527 transitions. [2021-10-08 14:41:58,987 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) [2021-10-08 14:41:58,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7527 transitions. [2021-10-08 14:41:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:58,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:58,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:58,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-10-08 14:41:58,992 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)] === [2021-10-08 14:41:58,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:58,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1850291487, now seen corresponding path program 152 times [2021-10-08 14:41:58,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:58,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415963901] [2021-10-08 14:41:58,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:58,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:59,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:59,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415963901] [2021-10-08 14:41:59,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415963901] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:59,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:59,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:41:59,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662282137] [2021-10-08 14:41:59,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:41:59,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:41:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:41:59,103 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) [2021-10-08 14:41:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:41:59,491 INFO L93 Difference]: Finished difference Result 3370 states and 9086 transitions. [2021-10-08 14:41:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:41:59,492 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 [2021-10-08 14:41:59,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:41:59,498 INFO L225 Difference]: With dead ends: 3370 [2021-10-08 14:41:59,499 INFO L226 Difference]: Without dead ends: 3362 [2021-10-08 14:41:59,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 138.1ms TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:41:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3362 states. [2021-10-08 14:41:59,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3362 to 2682. [2021-10-08 14:41:59,535 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) [2021-10-08 14:41:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 7525 transitions. [2021-10-08 14:41:59,540 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 7525 transitions. Word has length 38 [2021-10-08 14:41:59,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:41:59,540 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 7525 transitions. [2021-10-08 14:41:59,541 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) [2021-10-08 14:41:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 7525 transitions. [2021-10-08 14:41:59,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:41:59,544 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:41:59,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:41:59,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-10-08 14:41:59,545 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)] === [2021-10-08 14:41:59,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:41:59,545 INFO L82 PathProgramCache]: Analyzing trace with hash -674912017, now seen corresponding path program 153 times [2021-10-08 14:41:59,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:41:59,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912519813] [2021-10-08 14:41:59,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:41:59,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:41:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:41:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:41:59,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:41:59,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912519813] [2021-10-08 14:41:59,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912519813] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:41:59,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:41:59,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:41:59,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042942914] [2021-10-08 14:41:59,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:41:59,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:41:59,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:41:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:41:59,666 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) [2021-10-08 14:42:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:00,154 INFO L93 Difference]: Finished difference Result 3334 states and 8998 transitions. [2021-10-08 14:42:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:00,155 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 [2021-10-08 14:42:00,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:00,162 INFO L225 Difference]: With dead ends: 3334 [2021-10-08 14:42:00,162 INFO L226 Difference]: Without dead ends: 3326 [2021-10-08 14:42:00,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 167.9ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2021-10-08 14:42:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2680. [2021-10-08 14:42:00,201 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) [2021-10-08 14:42:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 7520 transitions. [2021-10-08 14:42:00,207 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 7520 transitions. Word has length 38 [2021-10-08 14:42:00,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:00,208 INFO L470 AbstractCegarLoop]: Abstraction has 2680 states and 7520 transitions. [2021-10-08 14:42:00,208 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) [2021-10-08 14:42:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 7520 transitions. [2021-10-08 14:42:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:00,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:00,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:00,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-10-08 14:42:00,215 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)] === [2021-10-08 14:42:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:00,215 INFO L82 PathProgramCache]: Analyzing trace with hash -861915627, now seen corresponding path program 154 times [2021-10-08 14:42:00,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:00,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490488714] [2021-10-08 14:42:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:00,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:00,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:00,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:00,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490488714] [2021-10-08 14:42:00,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490488714] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:00,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:00,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:00,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262471371] [2021-10-08 14:42:00,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:00,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:00,345 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) [2021-10-08 14:42:00,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:00,821 INFO L93 Difference]: Finished difference Result 3340 states and 8915 transitions. [2021-10-08 14:42:00,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:00,821 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 [2021-10-08 14:42:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:00,828 INFO L225 Difference]: With dead ends: 3340 [2021-10-08 14:42:00,828 INFO L226 Difference]: Without dead ends: 3228 [2021-10-08 14:42:00,828 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 160.1ms TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3228 states. [2021-10-08 14:42:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3228 to 2566. [2021-10-08 14:42:00,862 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) [2021-10-08 14:42:00,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 7148 transitions. [2021-10-08 14:42:00,867 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 7148 transitions. Word has length 38 [2021-10-08 14:42:00,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:00,867 INFO L470 AbstractCegarLoop]: Abstraction has 2566 states and 7148 transitions. [2021-10-08 14:42:00,867 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) [2021-10-08 14:42:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 7148 transitions. [2021-10-08 14:42:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:00,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:00,871 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] [2021-10-08 14:42:00,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-10-08 14:42:00,871 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)] === [2021-10-08 14:42:00,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:00,872 INFO L82 PathProgramCache]: Analyzing trace with hash 447503429, now seen corresponding path program 155 times [2021-10-08 14:42:00,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:00,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659347288] [2021-10-08 14:42:00,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:00,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:00,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:00,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659347288] [2021-10-08 14:42:00,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659347288] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:00,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:00,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:00,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226020952] [2021-10-08 14:42:00,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:00,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:00,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:00,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:00,994 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) [2021-10-08 14:42:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:01,534 INFO L93 Difference]: Finished difference Result 3080 states and 8220 transitions. [2021-10-08 14:42:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:01,534 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 [2021-10-08 14:42:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:01,539 INFO L225 Difference]: With dead ends: 3080 [2021-10-08 14:42:01,539 INFO L226 Difference]: Without dead ends: 2966 [2021-10-08 14:42:01,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 211.2ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2021-10-08 14:42:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 2390. [2021-10-08 14:42:01,571 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) [2021-10-08 14:42:01,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 6648 transitions. [2021-10-08 14:42:01,576 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 6648 transitions. Word has length 38 [2021-10-08 14:42:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:01,576 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 6648 transitions. [2021-10-08 14:42:01,577 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) [2021-10-08 14:42:01,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 6648 transitions. [2021-10-08 14:42:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:01,580 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:01,580 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:01,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-10-08 14:42:01,580 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)] === [2021-10-08 14:42:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:01,581 INFO L82 PathProgramCache]: Analyzing trace with hash -951711641, now seen corresponding path program 156 times [2021-10-08 14:42:01,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:01,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019422851] [2021-10-08 14:42:01,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:01,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:01,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:01,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019422851] [2021-10-08 14:42:01,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019422851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:01,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:01,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:01,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051305792] [2021-10-08 14:42:01,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:01,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:01,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:01,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:01,688 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) [2021-10-08 14:42:02,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:02,077 INFO L93 Difference]: Finished difference Result 2848 states and 7679 transitions. [2021-10-08 14:42:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:02,077 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 [2021-10-08 14:42:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:02,083 INFO L225 Difference]: With dead ends: 2848 [2021-10-08 14:42:02,083 INFO L226 Difference]: Without dead ends: 2840 [2021-10-08 14:42:02,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 163.1ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2021-10-08 14:42:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2390. [2021-10-08 14:42:02,117 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) [2021-10-08 14:42:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 6646 transitions. [2021-10-08 14:42:02,123 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 6646 transitions. Word has length 38 [2021-10-08 14:42:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:02,123 INFO L470 AbstractCegarLoop]: Abstraction has 2390 states and 6646 transitions. [2021-10-08 14:42:02,123 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) [2021-10-08 14:42:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 6646 transitions. [2021-10-08 14:42:02,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:02,127 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:02,127 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] [2021-10-08 14:42:02,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-10-08 14:42:02,128 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)] === [2021-10-08 14:42:02,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:02,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1197748297, now seen corresponding path program 157 times [2021-10-08 14:42:02,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:02,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169084403] [2021-10-08 14:42:02,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:02,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:02,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:02,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169084403] [2021-10-08 14:42:02,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169084403] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:02,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:02,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:02,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222973851] [2021-10-08 14:42:02,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:02,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:02,245 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) [2021-10-08 14:42:02,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:02,727 INFO L93 Difference]: Finished difference Result 2882 states and 7756 transitions. [2021-10-08 14:42:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:02,727 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 [2021-10-08 14:42:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:02,733 INFO L225 Difference]: With dead ends: 2882 [2021-10-08 14:42:02,734 INFO L226 Difference]: Without dead ends: 2860 [2021-10-08 14:42:02,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 181.3ms TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-10-08 14:42:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2386. [2021-10-08 14:42:02,767 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) [2021-10-08 14:42:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2386 states to 2386 states and 6635 transitions. [2021-10-08 14:42:02,772 INFO L78 Accepts]: Start accepts. Automaton has 2386 states and 6635 transitions. Word has length 38 [2021-10-08 14:42:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:02,772 INFO L470 AbstractCegarLoop]: Abstraction has 2386 states and 6635 transitions. [2021-10-08 14:42:02,772 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) [2021-10-08 14:42:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2386 states and 6635 transitions. [2021-10-08 14:42:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:02,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:02,776 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:02,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-10-08 14:42:02,776 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)] === [2021-10-08 14:42:02,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:02,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1968104795, now seen corresponding path program 158 times [2021-10-08 14:42:02,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:02,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254457936] [2021-10-08 14:42:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:02,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:02,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:02,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254457936] [2021-10-08 14:42:02,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254457936] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:02,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:02,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:02,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335766597] [2021-10-08 14:42:02,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:02,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:02,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:02,890 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) [2021-10-08 14:42:03,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:03,363 INFO L93 Difference]: Finished difference Result 2764 states and 7472 transitions. [2021-10-08 14:42:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:03,364 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 [2021-10-08 14:42:03,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:03,370 INFO L225 Difference]: With dead ends: 2764 [2021-10-08 14:42:03,370 INFO L226 Difference]: Without dead ends: 2748 [2021-10-08 14:42:03,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2021-10-08 14:42:03,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2380. [2021-10-08 14:42:03,400 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) [2021-10-08 14:42:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 6618 transitions. [2021-10-08 14:42:03,405 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 6618 transitions. Word has length 38 [2021-10-08 14:42:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:03,406 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 6618 transitions. [2021-10-08 14:42:03,406 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) [2021-10-08 14:42:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 6618 transitions. [2021-10-08 14:42:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:03,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:03,409 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] [2021-10-08 14:42:03,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-10-08 14:42:03,409 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)] === [2021-10-08 14:42:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:03,410 INFO L82 PathProgramCache]: Analyzing trace with hash -35903221, now seen corresponding path program 159 times [2021-10-08 14:42:03,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:03,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025755922] [2021-10-08 14:42:03,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:03,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:03,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:03,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:03,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025755922] [2021-10-08 14:42:03,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025755922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:03,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:03,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:03,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126193476] [2021-10-08 14:42:03,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:03,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:03,513 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) [2021-10-08 14:42:03,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:03,919 INFO L93 Difference]: Finished difference Result 2620 states and 7168 transitions. [2021-10-08 14:42:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:03,919 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 [2021-10-08 14:42:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:03,923 INFO L225 Difference]: With dead ends: 2620 [2021-10-08 14:42:03,924 INFO L226 Difference]: Without dead ends: 2590 [2021-10-08 14:42:03,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 151.2ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-10-08 14:42:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2358. [2021-10-08 14:42:03,951 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) [2021-10-08 14:42:03,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 6549 transitions. [2021-10-08 14:42:03,955 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 6549 transitions. Word has length 38 [2021-10-08 14:42:03,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:03,956 INFO L470 AbstractCegarLoop]: Abstraction has 2358 states and 6549 transitions. [2021-10-08 14:42:03,956 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) [2021-10-08 14:42:03,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 6549 transitions. [2021-10-08 14:42:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:03,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:03,959 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] [2021-10-08 14:42:03,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-10-08 14:42:03,959 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)] === [2021-10-08 14:42:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1251343195, now seen corresponding path program 160 times [2021-10-08 14:42:03,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:03,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766494002] [2021-10-08 14:42:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:03,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:04,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:04,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766494002] [2021-10-08 14:42:04,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766494002] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:04,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:04,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:04,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769156101] [2021-10-08 14:42:04,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:04,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:04,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:04,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:04,074 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) [2021-10-08 14:42:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:04,634 INFO L93 Difference]: Finished difference Result 2882 states and 7673 transitions. [2021-10-08 14:42:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:04,635 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 [2021-10-08 14:42:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:04,639 INFO L225 Difference]: With dead ends: 2882 [2021-10-08 14:42:04,640 INFO L226 Difference]: Without dead ends: 2816 [2021-10-08 14:42:04,640 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:04,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2021-10-08 14:42:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2322. [2021-10-08 14:42:04,668 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) [2021-10-08 14:42:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 6453 transitions. [2021-10-08 14:42:04,673 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 6453 transitions. Word has length 38 [2021-10-08 14:42:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:04,673 INFO L470 AbstractCegarLoop]: Abstraction has 2322 states and 6453 transitions. [2021-10-08 14:42:04,673 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) [2021-10-08 14:42:04,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 6453 transitions. [2021-10-08 14:42:04,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:04,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:04,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:04,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-10-08 14:42:04,677 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)] === [2021-10-08 14:42:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:04,677 INFO L82 PathProgramCache]: Analyzing trace with hash 926895035, now seen corresponding path program 161 times [2021-10-08 14:42:04,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:04,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636504160] [2021-10-08 14:42:04,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:04,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:04,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:04,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:04,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636504160] [2021-10-08 14:42:04,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636504160] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:04,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:04,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:04,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090011955] [2021-10-08 14:42:04,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:04,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:04,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:04,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:04,794 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) [2021-10-08 14:42:05,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:05,343 INFO L93 Difference]: Finished difference Result 2758 states and 7401 transitions. [2021-10-08 14:42:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:05,344 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 [2021-10-08 14:42:05,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:05,349 INFO L225 Difference]: With dead ends: 2758 [2021-10-08 14:42:05,349 INFO L226 Difference]: Without dead ends: 2660 [2021-10-08 14:42:05,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 204.5ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-08 14:42:05,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2232. [2021-10-08 14:42:05,378 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) [2021-10-08 14:42:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 6226 transitions. [2021-10-08 14:42:05,382 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 6226 transitions. Word has length 38 [2021-10-08 14:42:05,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:05,383 INFO L470 AbstractCegarLoop]: Abstraction has 2232 states and 6226 transitions. [2021-10-08 14:42:05,383 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) [2021-10-08 14:42:05,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 6226 transitions. [2021-10-08 14:42:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:05,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:05,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:05,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-10-08 14:42:05,386 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)] === [2021-10-08 14:42:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:05,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1121412679, now seen corresponding path program 162 times [2021-10-08 14:42:05,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:05,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143691822] [2021-10-08 14:42:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:05,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:05,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:05,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143691822] [2021-10-08 14:42:05,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143691822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:05,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:05,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:05,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355476385] [2021-10-08 14:42:05,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:05,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:05,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:05,479 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) [2021-10-08 14:42:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:05,873 INFO L93 Difference]: Finished difference Result 2702 states and 7263 transitions. [2021-10-08 14:42:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:05,873 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 [2021-10-08 14:42:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:05,878 INFO L225 Difference]: With dead ends: 2702 [2021-10-08 14:42:05,878 INFO L226 Difference]: Without dead ends: 2694 [2021-10-08 14:42:05,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2021-10-08 14:42:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2228. [2021-10-08 14:42:05,906 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) [2021-10-08 14:42:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 6212 transitions. [2021-10-08 14:42:05,911 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 6212 transitions. Word has length 38 [2021-10-08 14:42:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:05,911 INFO L470 AbstractCegarLoop]: Abstraction has 2228 states and 6212 transitions. [2021-10-08 14:42:05,911 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) [2021-10-08 14:42:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 6212 transitions. [2021-10-08 14:42:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:05,914 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:05,915 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:05,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-10-08 14:42:05,915 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)] === [2021-10-08 14:42:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1140085863, now seen corresponding path program 163 times [2021-10-08 14:42:05,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:05,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278251308] [2021-10-08 14:42:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:05,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:06,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:06,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278251308] [2021-10-08 14:42:06,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278251308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:06,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:06,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:06,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725718397] [2021-10-08 14:42:06,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:06,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:06,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:06,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:06,014 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) [2021-10-08 14:42:06,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:06,503 INFO L93 Difference]: Finished difference Result 2704 states and 7260 transitions. [2021-10-08 14:42:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:06,503 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 [2021-10-08 14:42:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:06,508 INFO L225 Difference]: With dead ends: 2704 [2021-10-08 14:42:06,508 INFO L226 Difference]: Without dead ends: 2688 [2021-10-08 14:42:06,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 201.2ms TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:06,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-10-08 14:42:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2222. [2021-10-08 14:42:06,539 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) [2021-10-08 14:42:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2222 states to 2222 states and 6195 transitions. [2021-10-08 14:42:06,544 INFO L78 Accepts]: Start accepts. Automaton has 2222 states and 6195 transitions. Word has length 38 [2021-10-08 14:42:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:06,544 INFO L470 AbstractCegarLoop]: Abstraction has 2222 states and 6195 transitions. [2021-10-08 14:42:06,544 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) [2021-10-08 14:42:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 2222 states and 6195 transitions. [2021-10-08 14:42:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:06,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:06,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:06,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-10-08 14:42:06,548 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)] === [2021-10-08 14:42:06,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:06,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1222679859, now seen corresponding path program 164 times [2021-10-08 14:42:06,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:06,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260774341] [2021-10-08 14:42:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:06,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:06,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:06,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260774341] [2021-10-08 14:42:06,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260774341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:06,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:06,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:06,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474727856] [2021-10-08 14:42:06,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:06,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:06,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:06,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:06,643 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) [2021-10-08 14:42:07,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:07,075 INFO L93 Difference]: Finished difference Result 2470 states and 6770 transitions. [2021-10-08 14:42:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:07,076 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 [2021-10-08 14:42:07,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:07,080 INFO L225 Difference]: With dead ends: 2470 [2021-10-08 14:42:07,080 INFO L226 Difference]: Without dead ends: 2440 [2021-10-08 14:42:07,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 232.6ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-10-08 14:42:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2204. [2021-10-08 14:42:07,108 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) [2021-10-08 14:42:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 6144 transitions. [2021-10-08 14:42:07,112 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 6144 transitions. Word has length 38 [2021-10-08 14:42:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:07,113 INFO L470 AbstractCegarLoop]: Abstraction has 2204 states and 6144 transitions. [2021-10-08 14:42:07,113 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) [2021-10-08 14:42:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 6144 transitions. [2021-10-08 14:42:07,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:07,116 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:07,116 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:07,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-10-08 14:42:07,116 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)] === [2021-10-08 14:42:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2138319541, now seen corresponding path program 165 times [2021-10-08 14:42:07,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:07,117 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637166186] [2021-10-08 14:42:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:07,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:07,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:07,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637166186] [2021-10-08 14:42:07,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637166186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:07,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:07,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:07,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934356937] [2021-10-08 14:42:07,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:07,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:07,208 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) [2021-10-08 14:42:07,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:07,584 INFO L93 Difference]: Finished difference Result 2502 states and 6830 transitions. [2021-10-08 14:42:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:07,584 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 [2021-10-08 14:42:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:07,589 INFO L225 Difference]: With dead ends: 2502 [2021-10-08 14:42:07,589 INFO L226 Difference]: Without dead ends: 2478 [2021-10-08 14:42:07,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 167.9ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:07,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-10-08 14:42:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2198. [2021-10-08 14:42:07,616 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) [2021-10-08 14:42:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 6127 transitions. [2021-10-08 14:42:07,621 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 6127 transitions. Word has length 38 [2021-10-08 14:42:07,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:07,621 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 6127 transitions. [2021-10-08 14:42:07,621 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) [2021-10-08 14:42:07,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 6127 transitions. [2021-10-08 14:42:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:07,624 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:07,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:07,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-10-08 14:42:07,625 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)] === [2021-10-08 14:42:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 832294233, now seen corresponding path program 166 times [2021-10-08 14:42:07,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:07,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606802803] [2021-10-08 14:42:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:07,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:07,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:07,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606802803] [2021-10-08 14:42:07,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606802803] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:07,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:07,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:07,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827293140] [2021-10-08 14:42:07,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:07,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:07,726 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) [2021-10-08 14:42:08,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:08,291 INFO L93 Difference]: Finished difference Result 2652 states and 7121 transitions. [2021-10-08 14:42:08,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:42:08,292 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 [2021-10-08 14:42:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:08,296 INFO L225 Difference]: With dead ends: 2652 [2021-10-08 14:42:08,297 INFO L226 Difference]: Without dead ends: 2590 [2021-10-08 14:42:08,297 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 234.6ms TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-10-08 14:42:08,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2198. [2021-10-08 14:42:08,325 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) [2021-10-08 14:42:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 6115 transitions. [2021-10-08 14:42:08,329 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 6115 transitions. Word has length 38 [2021-10-08 14:42:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:08,329 INFO L470 AbstractCegarLoop]: Abstraction has 2198 states and 6115 transitions. [2021-10-08 14:42:08,330 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) [2021-10-08 14:42:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 6115 transitions. [2021-10-08 14:42:08,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:08,333 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:08,333 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] [2021-10-08 14:42:08,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-10-08 14:42:08,333 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)] === [2021-10-08 14:42:08,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:08,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2131889963, now seen corresponding path program 167 times [2021-10-08 14:42:08,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:08,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597806429] [2021-10-08 14:42:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:08,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:08,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:08,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597806429] [2021-10-08 14:42:08,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597806429] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:08,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:08,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:08,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480583822] [2021-10-08 14:42:08,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:08,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:08,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:08,435 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) [2021-10-08 14:42:08,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:08,961 INFO L93 Difference]: Finished difference Result 2642 states and 7082 transitions. [2021-10-08 14:42:08,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:08,961 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 [2021-10-08 14:42:08,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:08,966 INFO L225 Difference]: With dead ends: 2642 [2021-10-08 14:42:08,967 INFO L226 Difference]: Without dead ends: 2578 [2021-10-08 14:42:08,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 190.9ms TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-10-08 14:42:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 2182. [2021-10-08 14:42:09,009 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) [2021-10-08 14:42:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2182 states to 2182 states and 6062 transitions. [2021-10-08 14:42:09,016 INFO L78 Accepts]: Start accepts. Automaton has 2182 states and 6062 transitions. Word has length 38 [2021-10-08 14:42:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:09,016 INFO L470 AbstractCegarLoop]: Abstraction has 2182 states and 6062 transitions. [2021-10-08 14:42:09,017 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) [2021-10-08 14:42:09,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2182 states and 6062 transitions. [2021-10-08 14:42:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:09,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:09,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:09,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-10-08 14:42:09,022 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)] === [2021-10-08 14:42:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:09,023 INFO L82 PathProgramCache]: Analyzing trace with hash 106252215, now seen corresponding path program 168 times [2021-10-08 14:42:09,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:09,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159310219] [2021-10-08 14:42:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:09,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:09,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:09,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159310219] [2021-10-08 14:42:09,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159310219] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:09,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:09,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:09,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438985610] [2021-10-08 14:42:09,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:09,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:09,122 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) [2021-10-08 14:42:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:09,741 INFO L93 Difference]: Finished difference Result 2690 states and 7159 transitions. [2021-10-08 14:42:09,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:09,742 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 [2021-10-08 14:42:09,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:09,747 INFO L225 Difference]: With dead ends: 2690 [2021-10-08 14:42:09,747 INFO L226 Difference]: Without dead ends: 2600 [2021-10-08 14:42:09,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 230.0ms TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:09,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2021-10-08 14:42:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2086. [2021-10-08 14:42:09,778 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) [2021-10-08 14:42:09,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5819 transitions. [2021-10-08 14:42:09,783 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5819 transitions. Word has length 38 [2021-10-08 14:42:09,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:09,783 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5819 transitions. [2021-10-08 14:42:09,783 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) [2021-10-08 14:42:09,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5819 transitions. [2021-10-08 14:42:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:09,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:09,786 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:09,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-10-08 14:42:09,787 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)] === [2021-10-08 14:42:09,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:09,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1225405947, now seen corresponding path program 169 times [2021-10-08 14:42:09,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:09,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576960641] [2021-10-08 14:42:09,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:09,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:09,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:09,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576960641] [2021-10-08 14:42:09,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576960641] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:09,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:09,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:09,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141341437] [2021-10-08 14:42:09,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:09,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:09,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:09,889 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) [2021-10-08 14:42:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:10,404 INFO L93 Difference]: Finished difference Result 2506 states and 6754 transitions. [2021-10-08 14:42:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:10,405 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 [2021-10-08 14:42:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:10,409 INFO L225 Difference]: With dead ends: 2506 [2021-10-08 14:42:10,409 INFO L226 Difference]: Without dead ends: 2434 [2021-10-08 14:42:10,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 189.5ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:10,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-10-08 14:42:10,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2058. [2021-10-08 14:42:10,434 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) [2021-10-08 14:42:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 5762 transitions. [2021-10-08 14:42:10,438 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 5762 transitions. Word has length 38 [2021-10-08 14:42:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:10,438 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 5762 transitions. [2021-10-08 14:42:10,438 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) [2021-10-08 14:42:10,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 5762 transitions. [2021-10-08 14:42:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:10,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:10,441 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] [2021-10-08 14:42:10,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-10-08 14:42:10,441 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)] === [2021-10-08 14:42:10,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:10,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1347939981, now seen corresponding path program 170 times [2021-10-08 14:42:10,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:10,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326010519] [2021-10-08 14:42:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:10,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:10,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:10,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326010519] [2021-10-08 14:42:10,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326010519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:10,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:10,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-08 14:42:10,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063678944] [2021-10-08 14:42:10,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 14:42:10,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 14:42:10,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 14:42:10,514 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) [2021-10-08 14:42:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:10,773 INFO L93 Difference]: Finished difference Result 2392 states and 6548 transitions. [2021-10-08 14:42:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:42:10,774 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 [2021-10-08 14:42:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:10,777 INFO L225 Difference]: With dead ends: 2392 [2021-10-08 14:42:10,778 INFO L226 Difference]: Without dead ends: 2292 [2021-10-08 14:42:10,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 91.2ms TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 14:42:10,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2021-10-08 14:42:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2086. [2021-10-08 14:42:10,802 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) [2021-10-08 14:42:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5836 transitions. [2021-10-08 14:42:10,806 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5836 transitions. Word has length 38 [2021-10-08 14:42:10,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:10,806 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5836 transitions. [2021-10-08 14:42:10,806 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) [2021-10-08 14:42:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5836 transitions. [2021-10-08 14:42:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:10,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:10,809 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] [2021-10-08 14:42:10,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-10-08 14:42:10,810 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)] === [2021-10-08 14:42:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:10,810 INFO L82 PathProgramCache]: Analyzing trace with hash -855610941, now seen corresponding path program 171 times [2021-10-08 14:42:10,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:10,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080803114] [2021-10-08 14:42:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:10,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:10,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:10,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080803114] [2021-10-08 14:42:10,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080803114] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:10,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:10,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:10,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625240688] [2021-10-08 14:42:10,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:10,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:10,915 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) [2021-10-08 14:42:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:11,360 INFO L93 Difference]: Finished difference Result 2340 states and 6413 transitions. [2021-10-08 14:42:11,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:11,361 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 [2021-10-08 14:42:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:11,364 INFO L225 Difference]: With dead ends: 2340 [2021-10-08 14:42:11,364 INFO L226 Difference]: Without dead ends: 2312 [2021-10-08 14:42:11,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 180.5ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:11,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-10-08 14:42:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2098. [2021-10-08 14:42:11,389 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) [2021-10-08 14:42:11,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 5854 transitions. [2021-10-08 14:42:11,393 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 5854 transitions. Word has length 38 [2021-10-08 14:42:11,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:11,393 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 5854 transitions. [2021-10-08 14:42:11,393 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) [2021-10-08 14:42:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 5854 transitions. [2021-10-08 14:42:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:11,396 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:11,396 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] [2021-10-08 14:42:11,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-10-08 14:42:11,397 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)] === [2021-10-08 14:42:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:11,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1105843091, now seen corresponding path program 172 times [2021-10-08 14:42:11,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:11,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525288682] [2021-10-08 14:42:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:11,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:11,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:11,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525288682] [2021-10-08 14:42:11,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525288682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:11,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:11,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:11,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21076150] [2021-10-08 14:42:11,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:11,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:11,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:11,492 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) [2021-10-08 14:42:11,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:11,885 INFO L93 Difference]: Finished difference Result 2652 states and 7139 transitions. [2021-10-08 14:42:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:11,886 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 [2021-10-08 14:42:11,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:11,890 INFO L225 Difference]: With dead ends: 2652 [2021-10-08 14:42:11,890 INFO L226 Difference]: Without dead ends: 2644 [2021-10-08 14:42:11,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 158.9ms TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:11,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-10-08 14:42:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2122. [2021-10-08 14:42:11,918 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) [2021-10-08 14:42:11,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 5920 transitions. [2021-10-08 14:42:11,923 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 5920 transitions. Word has length 38 [2021-10-08 14:42:11,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:11,923 INFO L470 AbstractCegarLoop]: Abstraction has 2122 states and 5920 transitions. [2021-10-08 14:42:11,923 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) [2021-10-08 14:42:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 5920 transitions. [2021-10-08 14:42:11,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:11,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:11,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:11,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-10-08 14:42:11,926 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)] === [2021-10-08 14:42:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:11,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1419360413, now seen corresponding path program 173 times [2021-10-08 14:42:11,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:11,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913513805] [2021-10-08 14:42:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:11,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:12,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:12,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913513805] [2021-10-08 14:42:12,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913513805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:12,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:12,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:12,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376117105] [2021-10-08 14:42:12,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:12,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:12,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:12,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:12,030 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) [2021-10-08 14:42:12,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:12,529 INFO L93 Difference]: Finished difference Result 2694 states and 7216 transitions. [2021-10-08 14:42:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:12,530 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 [2021-10-08 14:42:12,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:12,534 INFO L225 Difference]: With dead ends: 2694 [2021-10-08 14:42:12,534 INFO L226 Difference]: Without dead ends: 2660 [2021-10-08 14:42:12,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 212.2ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:12,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-10-08 14:42:12,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2098. [2021-10-08 14:42:12,562 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) [2021-10-08 14:42:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 5864 transitions. [2021-10-08 14:42:12,566 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 5864 transitions. Word has length 38 [2021-10-08 14:42:12,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:12,566 INFO L470 AbstractCegarLoop]: Abstraction has 2098 states and 5864 transitions. [2021-10-08 14:42:12,566 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) [2021-10-08 14:42:12,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 5864 transitions. [2021-10-08 14:42:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:12,569 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:12,569 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:12,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-10-08 14:42:12,570 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)] === [2021-10-08 14:42:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1646356653, now seen corresponding path program 174 times [2021-10-08 14:42:12,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:12,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394567556] [2021-10-08 14:42:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:12,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:12,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:12,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:12,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394567556] [2021-10-08 14:42:12,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394567556] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:12,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:12,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:12,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468951112] [2021-10-08 14:42:12,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:12,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:12,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:12,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:12,665 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) [2021-10-08 14:42:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:13,123 INFO L93 Difference]: Finished difference Result 2328 states and 6328 transitions. [2021-10-08 14:42:13,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:13,124 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 [2021-10-08 14:42:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:13,127 INFO L225 Difference]: With dead ends: 2328 [2021-10-08 14:42:13,128 INFO L226 Difference]: Without dead ends: 2218 [2021-10-08 14:42:13,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-10-08 14:42:13,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2052. [2021-10-08 14:42:13,153 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) [2021-10-08 14:42:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5745 transitions. [2021-10-08 14:42:13,157 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5745 transitions. Word has length 38 [2021-10-08 14:42:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:13,157 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5745 transitions. [2021-10-08 14:42:13,157 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) [2021-10-08 14:42:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5745 transitions. [2021-10-08 14:42:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:13,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:13,160 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] [2021-10-08 14:42:13,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-10-08 14:42:13,161 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)] === [2021-10-08 14:42:13,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash 895603571, now seen corresponding path program 175 times [2021-10-08 14:42:13,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:13,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698481247] [2021-10-08 14:42:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:13,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:13,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:13,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698481247] [2021-10-08 14:42:13,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698481247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:13,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:13,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:13,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219126225] [2021-10-08 14:42:13,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:13,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:13,252 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) [2021-10-08 14:42:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:13,698 INFO L93 Difference]: Finished difference Result 2430 states and 6568 transitions. [2021-10-08 14:42:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:13,699 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 [2021-10-08 14:42:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:13,703 INFO L225 Difference]: With dead ends: 2430 [2021-10-08 14:42:13,703 INFO L226 Difference]: Without dead ends: 2396 [2021-10-08 14:42:13,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:13,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2021-10-08 14:42:13,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2062. [2021-10-08 14:42:13,729 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) [2021-10-08 14:42:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5768 transitions. [2021-10-08 14:42:13,733 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5768 transitions. Word has length 38 [2021-10-08 14:42:13,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:13,734 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5768 transitions. [2021-10-08 14:42:13,734 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) [2021-10-08 14:42:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5768 transitions. [2021-10-08 14:42:13,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:13,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:13,737 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:13,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-10-08 14:42:13,737 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)] === [2021-10-08 14:42:13,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:13,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2089944669, now seen corresponding path program 176 times [2021-10-08 14:42:13,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:13,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309685788] [2021-10-08 14:42:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:13,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:13,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:13,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309685788] [2021-10-08 14:42:13,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309685788] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:13,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:13,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:13,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975517583] [2021-10-08 14:42:13,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:13,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:13,835 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) [2021-10-08 14:42:14,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:14,371 INFO L93 Difference]: Finished difference Result 2454 states and 6614 transitions. [2021-10-08 14:42:14,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:14,372 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 [2021-10-08 14:42:14,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:14,376 INFO L225 Difference]: With dead ends: 2454 [2021-10-08 14:42:14,376 INFO L226 Difference]: Without dead ends: 2432 [2021-10-08 14:42:14,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 231.4ms TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:14,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-10-08 14:42:14,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2054. [2021-10-08 14:42:14,404 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) [2021-10-08 14:42:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 5750 transitions. [2021-10-08 14:42:14,408 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 5750 transitions. Word has length 38 [2021-10-08 14:42:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:14,408 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 5750 transitions. [2021-10-08 14:42:14,409 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) [2021-10-08 14:42:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 5750 transitions. [2021-10-08 14:42:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:14,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:14,412 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] [2021-10-08 14:42:14,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-10-08 14:42:14,412 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)] === [2021-10-08 14:42:14,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:14,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1374161165, now seen corresponding path program 177 times [2021-10-08 14:42:14,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:14,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117794764] [2021-10-08 14:42:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:14,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:14,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:14,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117794764] [2021-10-08 14:42:14,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117794764] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:14,499 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:14,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:14,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799877992] [2021-10-08 14:42:14,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:14,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:14,501 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) [2021-10-08 14:42:14,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:14,874 INFO L93 Difference]: Finished difference Result 2662 states and 7149 transitions. [2021-10-08 14:42:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:14,875 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 [2021-10-08 14:42:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:14,880 INFO L225 Difference]: With dead ends: 2662 [2021-10-08 14:42:14,880 INFO L226 Difference]: Without dead ends: 2654 [2021-10-08 14:42:14,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:14,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2021-10-08 14:42:14,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2074. [2021-10-08 14:42:14,911 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) [2021-10-08 14:42:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 5804 transitions. [2021-10-08 14:42:14,916 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 5804 transitions. Word has length 38 [2021-10-08 14:42:14,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:14,916 INFO L470 AbstractCegarLoop]: Abstraction has 2074 states and 5804 transitions. [2021-10-08 14:42:14,916 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) [2021-10-08 14:42:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 5804 transitions. [2021-10-08 14:42:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:14,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:14,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:14,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-10-08 14:42:14,920 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)] === [2021-10-08 14:42:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:14,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1834505901, now seen corresponding path program 178 times [2021-10-08 14:42:14,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:14,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802246356] [2021-10-08 14:42:14,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:14,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:15,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:15,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802246356] [2021-10-08 14:42:15,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802246356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:15,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:15,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:15,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201915055] [2021-10-08 14:42:15,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:15,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:15,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:15,020 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) [2021-10-08 14:42:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:15,428 INFO L93 Difference]: Finished difference Result 2670 states and 7151 transitions. [2021-10-08 14:42:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:15,428 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 [2021-10-08 14:42:15,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:15,432 INFO L225 Difference]: With dead ends: 2670 [2021-10-08 14:42:15,433 INFO L226 Difference]: Without dead ends: 2634 [2021-10-08 14:42:15,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 182.8ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-10-08 14:42:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2070. [2021-10-08 14:42:15,459 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) [2021-10-08 14:42:15,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5792 transitions. [2021-10-08 14:42:15,463 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5792 transitions. Word has length 38 [2021-10-08 14:42:15,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:15,463 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5792 transitions. [2021-10-08 14:42:15,463 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) [2021-10-08 14:42:15,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5792 transitions. [2021-10-08 14:42:15,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:15,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:15,466 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:15,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-10-08 14:42:15,466 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)] === [2021-10-08 14:42:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:15,467 INFO L82 PathProgramCache]: Analyzing trace with hash -983521059, now seen corresponding path program 179 times [2021-10-08 14:42:15,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:15,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757710894] [2021-10-08 14:42:15,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:15,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:15,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:15,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:15,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757710894] [2021-10-08 14:42:15,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757710894] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:15,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:15,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:15,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564982400] [2021-10-08 14:42:15,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:15,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:15,556 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) [2021-10-08 14:42:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:15,938 INFO L93 Difference]: Finished difference Result 2552 states and 6904 transitions. [2021-10-08 14:42:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:15,938 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 [2021-10-08 14:42:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:15,942 INFO L225 Difference]: With dead ends: 2552 [2021-10-08 14:42:15,942 INFO L226 Difference]: Without dead ends: 2544 [2021-10-08 14:42:15,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 164.4ms TimeCoverageRelationStatistics Valid=126, Invalid=426, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:15,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-10-08 14:42:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2072. [2021-10-08 14:42:15,968 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) [2021-10-08 14:42:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 5795 transitions. [2021-10-08 14:42:15,972 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 5795 transitions. Word has length 38 [2021-10-08 14:42:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:15,972 INFO L470 AbstractCegarLoop]: Abstraction has 2072 states and 5795 transitions. [2021-10-08 14:42:15,972 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) [2021-10-08 14:42:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 5795 transitions. [2021-10-08 14:42:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:15,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:15,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-10-08 14:42:15,975 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)] === [2021-10-08 14:42:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:15,976 INFO L82 PathProgramCache]: Analyzing trace with hash 786242733, now seen corresponding path program 180 times [2021-10-08 14:42:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:15,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782781339] [2021-10-08 14:42:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:15,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:16,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:16,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782781339] [2021-10-08 14:42:16,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782781339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:16,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:16,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:16,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129098705] [2021-10-08 14:42:16,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:16,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:16,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:16,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:16,080 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) [2021-10-08 14:42:16,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:16,498 INFO L93 Difference]: Finished difference Result 2566 states and 6933 transitions. [2021-10-08 14:42:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:16,498 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 [2021-10-08 14:42:16,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:16,502 INFO L225 Difference]: With dead ends: 2566 [2021-10-08 14:42:16,503 INFO L226 Difference]: Without dead ends: 2558 [2021-10-08 14:42:16,503 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 193.8ms TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:16,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2021-10-08 14:42:16,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2070. [2021-10-08 14:42:16,529 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) [2021-10-08 14:42:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 5790 transitions. [2021-10-08 14:42:16,533 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 5790 transitions. Word has length 38 [2021-10-08 14:42:16,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:16,533 INFO L470 AbstractCegarLoop]: Abstraction has 2070 states and 5790 transitions. [2021-10-08 14:42:16,533 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) [2021-10-08 14:42:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 5790 transitions. [2021-10-08 14:42:16,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:16,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:16,536 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] [2021-10-08 14:42:16,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-10-08 14:42:16,536 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)] === [2021-10-08 14:42:16,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:16,537 INFO L82 PathProgramCache]: Analyzing trace with hash 599239123, now seen corresponding path program 181 times [2021-10-08 14:42:16,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:16,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040861178] [2021-10-08 14:42:16,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:16,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:16,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:16,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:16,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040861178] [2021-10-08 14:42:16,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040861178] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:16,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:16,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:16,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466400299] [2021-10-08 14:42:16,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:16,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:16,623 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) [2021-10-08 14:42:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:17,090 INFO L93 Difference]: Finished difference Result 2574 states and 6943 transitions. [2021-10-08 14:42:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:17,090 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 [2021-10-08 14:42:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:17,094 INFO L225 Difference]: With dead ends: 2574 [2021-10-08 14:42:17,095 INFO L226 Difference]: Without dead ends: 2540 [2021-10-08 14:42:17,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 193.2ms TimeCoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2021-10-08 14:42:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2064. [2021-10-08 14:42:17,138 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) [2021-10-08 14:42:17,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 5765 transitions. [2021-10-08 14:42:17,142 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 5765 transitions. Word has length 38 [2021-10-08 14:42:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:17,143 INFO L470 AbstractCegarLoop]: Abstraction has 2064 states and 5765 transitions. [2021-10-08 14:42:17,143 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) [2021-10-08 14:42:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 5765 transitions. [2021-10-08 14:42:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:17,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:17,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:17,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-10-08 14:42:17,146 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)] === [2021-10-08 14:42:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:17,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1908658179, now seen corresponding path program 182 times [2021-10-08 14:42:17,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:17,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151082319] [2021-10-08 14:42:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:17,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:17,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:17,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151082319] [2021-10-08 14:42:17,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151082319] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:17,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:17,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:17,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474639312] [2021-10-08 14:42:17,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:17,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:17,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:17,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:17,240 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) [2021-10-08 14:42:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:17,677 INFO L93 Difference]: Finished difference Result 2562 states and 6917 transitions. [2021-10-08 14:42:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:17,677 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 [2021-10-08 14:42:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:17,683 INFO L225 Difference]: With dead ends: 2562 [2021-10-08 14:42:17,683 INFO L226 Difference]: Without dead ends: 2538 [2021-10-08 14:42:17,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 194.5ms TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2021-10-08 14:42:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-10-08 14:42:17,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2054. [2021-10-08 14:42:17,724 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) [2021-10-08 14:42:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2054 states to 2054 states and 5748 transitions. [2021-10-08 14:42:17,732 INFO L78 Accepts]: Start accepts. Automaton has 2054 states and 5748 transitions. Word has length 38 [2021-10-08 14:42:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 2054 states and 5748 transitions. [2021-10-08 14:42:17,732 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) [2021-10-08 14:42:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2054 states and 5748 transitions. [2021-10-08 14:42:17,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:17,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:17,738 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] [2021-10-08 14:42:17,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-10-08 14:42:17,738 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)] === [2021-10-08 14:42:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:17,739 INFO L82 PathProgramCache]: Analyzing trace with hash -652626957, now seen corresponding path program 183 times [2021-10-08 14:42:17,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:17,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688512942] [2021-10-08 14:42:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:17,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:17,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:17,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688512942] [2021-10-08 14:42:17,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688512942] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:17,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:17,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:17,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254723508] [2021-10-08 14:42:17,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:17,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:17,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:17,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:17,831 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) [2021-10-08 14:42:18,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:18,113 INFO L93 Difference]: Finished difference Result 2360 states and 6445 transitions. [2021-10-08 14:42:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:18,114 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 [2021-10-08 14:42:18,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:18,118 INFO L225 Difference]: With dead ends: 2360 [2021-10-08 14:42:18,118 INFO L226 Difference]: Without dead ends: 2268 [2021-10-08 14:42:18,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 105.4ms TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2021-10-08 14:42:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 2066. [2021-10-08 14:42:18,143 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) [2021-10-08 14:42:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 5768 transitions. [2021-10-08 14:42:18,147 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 5768 transitions. Word has length 38 [2021-10-08 14:42:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:18,147 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 5768 transitions. [2021-10-08 14:42:18,147 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) [2021-10-08 14:42:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 5768 transitions. [2021-10-08 14:42:18,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:18,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:18,150 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] [2021-10-08 14:42:18,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-10-08 14:42:18,150 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)] === [2021-10-08 14:42:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:18,151 INFO L82 PathProgramCache]: Analyzing trace with hash -160297917, now seen corresponding path program 184 times [2021-10-08 14:42:18,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:18,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359080683] [2021-10-08 14:42:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:18,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:18,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:18,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359080683] [2021-10-08 14:42:18,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359080683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:18,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:18,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:18,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249748765] [2021-10-08 14:42:18,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:18,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:18,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:18,268 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) [2021-10-08 14:42:18,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:18,803 INFO L93 Difference]: Finished difference Result 2338 states and 6383 transitions. [2021-10-08 14:42:18,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:18,804 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 [2021-10-08 14:42:18,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:18,808 INFO L225 Difference]: With dead ends: 2338 [2021-10-08 14:42:18,808 INFO L226 Difference]: Without dead ends: 2310 [2021-10-08 14:42:18,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 242.1ms TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-10-08 14:42:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2080. [2021-10-08 14:42:18,838 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) [2021-10-08 14:42:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 5791 transitions. [2021-10-08 14:42:18,845 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 5791 transitions. Word has length 38 [2021-10-08 14:42:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:18,845 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 5791 transitions. [2021-10-08 14:42:18,846 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) [2021-10-08 14:42:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 5791 transitions. [2021-10-08 14:42:18,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:18,850 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:18,850 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] [2021-10-08 14:42:18,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-10-08 14:42:18,851 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)] === [2021-10-08 14:42:18,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:18,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1801156115, now seen corresponding path program 185 times [2021-10-08 14:42:18,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:18,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255659486] [2021-10-08 14:42:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:18,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:18,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:18,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255659486] [2021-10-08 14:42:18,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255659486] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:18,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:18,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:18,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182334514] [2021-10-08 14:42:18,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:18,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:18,976 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) [2021-10-08 14:42:19,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:19,418 INFO L93 Difference]: Finished difference Result 2632 states and 7044 transitions. [2021-10-08 14:42:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:19,419 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 [2021-10-08 14:42:19,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:19,426 INFO L225 Difference]: With dead ends: 2632 [2021-10-08 14:42:19,427 INFO L226 Difference]: Without dead ends: 2624 [2021-10-08 14:42:19,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 194.3ms TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-10-08 14:42:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2086. [2021-10-08 14:42:19,471 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) [2021-10-08 14:42:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 5802 transitions. [2021-10-08 14:42:19,478 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 5802 transitions. Word has length 38 [2021-10-08 14:42:19,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:19,478 INFO L470 AbstractCegarLoop]: Abstraction has 2086 states and 5802 transitions. [2021-10-08 14:42:19,478 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) [2021-10-08 14:42:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 5802 transitions. [2021-10-08 14:42:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:19,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:19,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:19,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-10-08 14:42:19,484 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)] === [2021-10-08 14:42:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:19,484 INFO L82 PathProgramCache]: Analyzing trace with hash -724047389, now seen corresponding path program 186 times [2021-10-08 14:42:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:19,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874043865] [2021-10-08 14:42:19,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:19,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:19,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:19,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:19,610 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874043865] [2021-10-08 14:42:19,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874043865] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:19,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:19,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:19,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117551457] [2021-10-08 14:42:19,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:19,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:19,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:19,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:19,612 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) [2021-10-08 14:42:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:20,163 INFO L93 Difference]: Finished difference Result 2672 states and 7118 transitions. [2021-10-08 14:42:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 14:42:20,164 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 [2021-10-08 14:42:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:20,171 INFO L225 Difference]: With dead ends: 2672 [2021-10-08 14:42:20,171 INFO L226 Difference]: Without dead ends: 2638 [2021-10-08 14:42:20,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 245.7ms TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2021-10-08 14:42:20,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-10-08 14:42:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2062. [2021-10-08 14:42:20,206 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) [2021-10-08 14:42:20,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 5754 transitions. [2021-10-08 14:42:20,210 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 5754 transitions. Word has length 38 [2021-10-08 14:42:20,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:20,211 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 5754 transitions. [2021-10-08 14:42:20,211 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) [2021-10-08 14:42:20,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 5754 transitions. [2021-10-08 14:42:20,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:20,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:20,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:20,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-10-08 14:42:20,214 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)] === [2021-10-08 14:42:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1007731565, now seen corresponding path program 187 times [2021-10-08 14:42:20,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:20,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092728667] [2021-10-08 14:42:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:20,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:20,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:20,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092728667] [2021-10-08 14:42:20,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092728667] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:20,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:20,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:20,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250590546] [2021-10-08 14:42:20,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:20,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:20,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:20,339 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) [2021-10-08 14:42:20,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:20,687 INFO L93 Difference]: Finished difference Result 2250 states and 6179 transitions. [2021-10-08 14:42:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:20,688 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 [2021-10-08 14:42:20,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:20,692 INFO L225 Difference]: With dead ends: 2250 [2021-10-08 14:42:20,692 INFO L226 Difference]: Without dead ends: 2234 [2021-10-08 14:42:20,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 181.5ms TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:20,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2021-10-08 14:42:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2060. [2021-10-08 14:42:20,716 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) [2021-10-08 14:42:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5749 transitions. [2021-10-08 14:42:20,721 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5749 transitions. Word has length 38 [2021-10-08 14:42:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:20,721 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5749 transitions. [2021-10-08 14:42:20,721 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) [2021-10-08 14:42:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5749 transitions. [2021-10-08 14:42:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:20,724 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:20,724 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] [2021-10-08 14:42:20,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-10-08 14:42:20,724 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)] === [2021-10-08 14:42:20,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:20,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1835938237, now seen corresponding path program 188 times [2021-10-08 14:42:20,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:20,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029587921] [2021-10-08 14:42:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:20,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:20,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:20,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:20,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029587921] [2021-10-08 14:42:20,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029587921] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:20,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:20,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:20,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283105219] [2021-10-08 14:42:20,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:20,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:20,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:20,854 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) [2021-10-08 14:42:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:21,405 INFO L93 Difference]: Finished difference Result 2334 states and 6352 transitions. [2021-10-08 14:42:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:21,406 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 [2021-10-08 14:42:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:21,410 INFO L225 Difference]: With dead ends: 2334 [2021-10-08 14:42:21,410 INFO L226 Difference]: Without dead ends: 2314 [2021-10-08 14:42:21,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 210.6ms TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2021-10-08 14:42:21,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2066. [2021-10-08 14:42:21,434 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) [2021-10-08 14:42:21,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 5758 transitions. [2021-10-08 14:42:21,437 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 5758 transitions. Word has length 38 [2021-10-08 14:42:21,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:21,438 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 5758 transitions. [2021-10-08 14:42:21,438 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) [2021-10-08 14:42:21,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 5758 transitions. [2021-10-08 14:42:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:21,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:21,441 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] [2021-10-08 14:42:21,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-10-08 14:42:21,441 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)] === [2021-10-08 14:42:21,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:21,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1550188151, now seen corresponding path program 189 times [2021-10-08 14:42:21,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:21,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653628362] [2021-10-08 14:42:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:21,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:21,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:21,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653628362] [2021-10-08 14:42:21,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653628362] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:21,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:21,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:21,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571593051] [2021-10-08 14:42:21,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:21,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:21,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:21,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:21,573 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) [2021-10-08 14:42:22,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:22,110 INFO L93 Difference]: Finished difference Result 2588 states and 6942 transitions. [2021-10-08 14:42:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:22,110 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 [2021-10-08 14:42:22,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:22,115 INFO L225 Difference]: With dead ends: 2588 [2021-10-08 14:42:22,115 INFO L226 Difference]: Without dead ends: 2570 [2021-10-08 14:42:22,115 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 248.1ms TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:22,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2021-10-08 14:42:22,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 2068. [2021-10-08 14:42:22,142 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) [2021-10-08 14:42:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 5761 transitions. [2021-10-08 14:42:22,147 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 5761 transitions. Word has length 38 [2021-10-08 14:42:22,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 2068 states and 5761 transitions. [2021-10-08 14:42:22,147 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) [2021-10-08 14:42:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 5761 transitions. [2021-10-08 14:42:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:22,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:22,150 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] [2021-10-08 14:42:22,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-10-08 14:42:22,150 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)] === [2021-10-08 14:42:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:22,150 INFO L82 PathProgramCache]: Analyzing trace with hash -240769095, now seen corresponding path program 190 times [2021-10-08 14:42:22,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:22,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273041336] [2021-10-08 14:42:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:22,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:22,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:22,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273041336] [2021-10-08 14:42:22,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273041336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:22,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:22,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:22,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971968786] [2021-10-08 14:42:22,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:22,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:22,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:22,279 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) [2021-10-08 14:42:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:22,924 INFO L93 Difference]: Finished difference Result 2628 states and 7018 transitions. [2021-10-08 14:42:22,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 14:42:22,924 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 [2021-10-08 14:42:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:22,929 INFO L225 Difference]: With dead ends: 2628 [2021-10-08 14:42:22,929 INFO L226 Difference]: Without dead ends: 2606 [2021-10-08 14:42:22,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 299.5ms TimeCoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-10-08 14:42:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-10-08 14:42:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2060. [2021-10-08 14:42:22,958 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) [2021-10-08 14:42:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 5747 transitions. [2021-10-08 14:42:22,963 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 5747 transitions. Word has length 38 [2021-10-08 14:42:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:22,963 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 5747 transitions. [2021-10-08 14:42:22,963 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) [2021-10-08 14:42:22,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 5747 transitions. [2021-10-08 14:42:22,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:22,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:22,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:22,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-10-08 14:42:22,967 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)] === [2021-10-08 14:42:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash 2065816515, now seen corresponding path program 191 times [2021-10-08 14:42:22,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:22,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337821208] [2021-10-08 14:42:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:22,968 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:23,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:23,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337821208] [2021-10-08 14:42:23,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337821208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:23,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:23,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:23,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802616615] [2021-10-08 14:42:23,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:23,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:23,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:23,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:23,088 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) [2021-10-08 14:42:23,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:23,585 INFO L93 Difference]: Finished difference Result 2248 states and 6166 transitions. [2021-10-08 14:42:23,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:23,586 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 [2021-10-08 14:42:23,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:23,592 INFO L225 Difference]: With dead ends: 2248 [2021-10-08 14:42:23,593 INFO L226 Difference]: Without dead ends: 2216 [2021-10-08 14:42:23,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 213.1ms TimeCoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:23,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2021-10-08 14:42:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2052. [2021-10-08 14:42:23,636 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) [2021-10-08 14:42:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 5731 transitions. [2021-10-08 14:42:23,642 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 5731 transitions. Word has length 38 [2021-10-08 14:42:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:23,643 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 5731 transitions. [2021-10-08 14:42:23,643 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) [2021-10-08 14:42:23,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 5731 transitions. [2021-10-08 14:42:23,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:23,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:23,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:23,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-10-08 14:42:23,649 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)] === [2021-10-08 14:42:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:23,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2097110799, now seen corresponding path program 192 times [2021-10-08 14:42:23,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:23,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181676682] [2021-10-08 14:42:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:23,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:23,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:23,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181676682] [2021-10-08 14:42:23,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181676682] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:23,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:23,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:23,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700387995] [2021-10-08 14:42:23,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:23,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:23,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:23,738 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) [2021-10-08 14:42:24,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:24,080 INFO L93 Difference]: Finished difference Result 2450 states and 6620 transitions. [2021-10-08 14:42:24,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:24,081 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 [2021-10-08 14:42:24,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:24,085 INFO L225 Difference]: With dead ends: 2450 [2021-10-08 14:42:24,085 INFO L226 Difference]: Without dead ends: 2442 [2021-10-08 14:42:24,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 127.7ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2442 states. [2021-10-08 14:42:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2442 to 2058. [2021-10-08 14:42:24,113 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) [2021-10-08 14:42:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2058 states to 2058 states and 5750 transitions. [2021-10-08 14:42:24,117 INFO L78 Accepts]: Start accepts. Automaton has 2058 states and 5750 transitions. Word has length 38 [2021-10-08 14:42:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:24,117 INFO L470 AbstractCegarLoop]: Abstraction has 2058 states and 5750 transitions. [2021-10-08 14:42:24,117 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) [2021-10-08 14:42:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2058 states and 5750 transitions. [2021-10-08 14:42:24,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:24,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:24,120 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:24,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-10-08 14:42:24,121 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)] === [2021-10-08 14:42:24,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:24,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1737511761, now seen corresponding path program 193 times [2021-10-08 14:42:24,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:24,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706026275] [2021-10-08 14:42:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:24,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:24,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:24,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:24,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706026275] [2021-10-08 14:42:24,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706026275] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:24,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:24,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:24,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140178516] [2021-10-08 14:42:24,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:24,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:24,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:24,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:24,211 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) [2021-10-08 14:42:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:24,665 INFO L93 Difference]: Finished difference Result 2428 states and 6549 transitions. [2021-10-08 14:42:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:24,666 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 [2021-10-08 14:42:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:24,670 INFO L225 Difference]: With dead ends: 2428 [2021-10-08 14:42:24,670 INFO L226 Difference]: Without dead ends: 2392 [2021-10-08 14:42:24,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 166.4ms TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:24,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2021-10-08 14:42:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2050. [2021-10-08 14:42:24,697 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) [2021-10-08 14:42:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 5724 transitions. [2021-10-08 14:42:24,701 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 5724 transitions. Word has length 38 [2021-10-08 14:42:24,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:24,701 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 5724 transitions. [2021-10-08 14:42:24,701 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) [2021-10-08 14:42:24,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 5724 transitions. [2021-10-08 14:42:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:24,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:24,704 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:24,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-10-08 14:42:24,705 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)] === [2021-10-08 14:42:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:24,705 INFO L82 PathProgramCache]: Analyzing trace with hash -260571425, now seen corresponding path program 194 times [2021-10-08 14:42:24,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:24,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947914518] [2021-10-08 14:42:24,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:24,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:24,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:24,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947914518] [2021-10-08 14:42:24,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947914518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:24,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:24,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:24,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202017697] [2021-10-08 14:42:24,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:24,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:24,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:24,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:24,789 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) [2021-10-08 14:42:25,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:25,151 INFO L93 Difference]: Finished difference Result 2472 states and 6655 transitions. [2021-10-08 14:42:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:25,151 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 [2021-10-08 14:42:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:25,155 INFO L225 Difference]: With dead ends: 2472 [2021-10-08 14:42:25,156 INFO L226 Difference]: Without dead ends: 2464 [2021-10-08 14:42:25,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 140.3ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:25,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2021-10-08 14:42:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2050. [2021-10-08 14:42:25,182 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) [2021-10-08 14:42:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 5722 transitions. [2021-10-08 14:42:25,186 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 5722 transitions. Word has length 38 [2021-10-08 14:42:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:25,187 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 5722 transitions. [2021-10-08 14:42:25,187 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) [2021-10-08 14:42:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 5722 transitions. [2021-10-08 14:42:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:25,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:25,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:25,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-10-08 14:42:25,190 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)] === [2021-10-08 14:42:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1509192367, now seen corresponding path program 195 times [2021-10-08 14:42:25,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:25,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162472669] [2021-10-08 14:42:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:25,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:25,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:25,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162472669] [2021-10-08 14:42:25,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162472669] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:25,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:25,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:25,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061792862] [2021-10-08 14:42:25,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:25,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:25,278 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) [2021-10-08 14:42:25,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:25,743 INFO L93 Difference]: Finished difference Result 2486 states and 6676 transitions. [2021-10-08 14:42:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:25,744 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 [2021-10-08 14:42:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:25,748 INFO L225 Difference]: With dead ends: 2486 [2021-10-08 14:42:25,748 INFO L226 Difference]: Without dead ends: 2478 [2021-10-08 14:42:25,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 176.6ms TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-10-08 14:42:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2048. [2021-10-08 14:42:25,774 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) [2021-10-08 14:42:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 5717 transitions. [2021-10-08 14:42:25,778 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 5717 transitions. Word has length 38 [2021-10-08 14:42:25,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:25,778 INFO L470 AbstractCegarLoop]: Abstraction has 2048 states and 5717 transitions. [2021-10-08 14:42:25,779 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) [2021-10-08 14:42:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 5717 transitions. [2021-10-08 14:42:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:25,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:25,781 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] [2021-10-08 14:42:25,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-10-08 14:42:25,782 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)] === [2021-10-08 14:42:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:25,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1322188757, now seen corresponding path program 196 times [2021-10-08 14:42:25,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:25,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664355656] [2021-10-08 14:42:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:25,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:25,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:25,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664355656] [2021-10-08 14:42:25,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664355656] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:25,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:25,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:25,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674837757] [2021-10-08 14:42:25,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:25,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:25,858 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) [2021-10-08 14:42:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:26,254 INFO L93 Difference]: Finished difference Result 2424 states and 6527 transitions. [2021-10-08 14:42:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:26,254 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 [2021-10-08 14:42:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:26,258 INFO L225 Difference]: With dead ends: 2424 [2021-10-08 14:42:26,258 INFO L226 Difference]: Without dead ends: 2390 [2021-10-08 14:42:26,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 138.6ms TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2021-10-08 14:42:26,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 2042. [2021-10-08 14:42:26,284 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) [2021-10-08 14:42:26,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2042 states to 2042 states and 5692 transitions. [2021-10-08 14:42:26,289 INFO L78 Accepts]: Start accepts. Automaton has 2042 states and 5692 transitions. Word has length 38 [2021-10-08 14:42:26,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:26,289 INFO L470 AbstractCegarLoop]: Abstraction has 2042 states and 5692 transitions. [2021-10-08 14:42:26,289 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) [2021-10-08 14:42:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2042 states and 5692 transitions. [2021-10-08 14:42:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:26,292 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:26,292 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:26,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-10-08 14:42:26,292 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)] === [2021-10-08 14:42:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:26,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1663359483, now seen corresponding path program 197 times [2021-10-08 14:42:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:26,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519181558] [2021-10-08 14:42:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:26,293 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:26,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:26,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519181558] [2021-10-08 14:42:26,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519181558] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:26,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:26,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:26,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941645002] [2021-10-08 14:42:26,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:26,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:26,389 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) [2021-10-08 14:42:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:26,886 INFO L93 Difference]: Finished difference Result 2412 states and 6485 transitions. [2021-10-08 14:42:26,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:26,886 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 [2021-10-08 14:42:26,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:26,891 INFO L225 Difference]: With dead ends: 2412 [2021-10-08 14:42:26,891 INFO L226 Difference]: Without dead ends: 2388 [2021-10-08 14:42:26,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 198.4ms TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:26,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2021-10-08 14:42:26,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2032. [2021-10-08 14:42:26,918 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) [2021-10-08 14:42:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2032 states to 2032 states and 5675 transitions. [2021-10-08 14:42:26,923 INFO L78 Accepts]: Start accepts. Automaton has 2032 states and 5675 transitions. Word has length 38 [2021-10-08 14:42:26,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:26,923 INFO L470 AbstractCegarLoop]: Abstraction has 2032 states and 5675 transitions. [2021-10-08 14:42:26,923 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) [2021-10-08 14:42:26,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2032 states and 5675 transitions. [2021-10-08 14:42:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:26,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:26,926 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:26,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-10-08 14:42:26,927 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)] === [2021-10-08 14:42:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:26,927 INFO L82 PathProgramCache]: Analyzing trace with hash 545486485, now seen corresponding path program 198 times [2021-10-08 14:42:26,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:26,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127372943] [2021-10-08 14:42:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:26,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:26,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:26,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127372943] [2021-10-08 14:42:26,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127372943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:26,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:26,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:26,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049779496] [2021-10-08 14:42:26,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:26,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:26,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:26,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:26,994 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) [2021-10-08 14:42:27,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:27,367 INFO L93 Difference]: Finished difference Result 2182 states and 5965 transitions. [2021-10-08 14:42:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:27,367 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 [2021-10-08 14:42:27,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:27,371 INFO L225 Difference]: With dead ends: 2182 [2021-10-08 14:42:27,371 INFO L226 Difference]: Without dead ends: 2088 [2021-10-08 14:42:27,371 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 142.4ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:42:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-10-08 14:42:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2024. [2021-10-08 14:42:27,395 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) [2021-10-08 14:42:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2024 states to 2024 states and 5655 transitions. [2021-10-08 14:42:27,399 INFO L78 Accepts]: Start accepts. Automaton has 2024 states and 5655 transitions. Word has length 38 [2021-10-08 14:42:27,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:27,399 INFO L470 AbstractCegarLoop]: Abstraction has 2024 states and 5655 transitions. [2021-10-08 14:42:27,400 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) [2021-10-08 14:42:27,400 INFO L276 IsEmpty]: Start isEmpty. Operand 2024 states and 5655 transitions. [2021-10-08 14:42:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:27,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:27,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:27,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-10-08 14:42:27,403 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)] === [2021-10-08 14:42:27,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:27,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1730681199, now seen corresponding path program 199 times [2021-10-08 14:42:27,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:27,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112128985] [2021-10-08 14:42:27,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:27,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:27,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:27,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112128985] [2021-10-08 14:42:27,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112128985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:27,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:27,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:27,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288984988] [2021-10-08 14:42:27,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:27,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:27,520 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) [2021-10-08 14:42:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:28,060 INFO L93 Difference]: Finished difference Result 2138 states and 5876 transitions. [2021-10-08 14:42:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:28,060 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 [2021-10-08 14:42:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:28,064 INFO L225 Difference]: With dead ends: 2138 [2021-10-08 14:42:28,064 INFO L226 Difference]: Without dead ends: 2122 [2021-10-08 14:42:28,064 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 261.3ms TimeCoverageRelationStatistics Valid=166, Invalid=434, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-10-08 14:42:28,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 2022. [2021-10-08 14:42:28,090 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) [2021-10-08 14:42:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 5650 transitions. [2021-10-08 14:42:28,094 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 5650 transitions. Word has length 38 [2021-10-08 14:42:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:28,094 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 5650 transitions. [2021-10-08 14:42:28,094 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) [2021-10-08 14:42:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 5650 transitions. [2021-10-08 14:42:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:28,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:28,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:28,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-10-08 14:42:28,098 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)] === [2021-10-08 14:42:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:28,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1506201147, now seen corresponding path program 200 times [2021-10-08 14:42:28,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:28,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151347063] [2021-10-08 14:42:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:28,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:28,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:28,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151347063] [2021-10-08 14:42:28,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151347063] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:28,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:28,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:28,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119198103] [2021-10-08 14:42:28,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:28,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:28,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:28,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:28,225 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) [2021-10-08 14:42:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:28,793 INFO L93 Difference]: Finished difference Result 2180 states and 5960 transitions. [2021-10-08 14:42:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:28,793 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 [2021-10-08 14:42:28,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:28,798 INFO L225 Difference]: With dead ends: 2180 [2021-10-08 14:42:28,798 INFO L226 Difference]: Without dead ends: 2154 [2021-10-08 14:42:28,798 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2021-10-08 14:42:28,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2018. [2021-10-08 14:42:28,832 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) [2021-10-08 14:42:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 5642 transitions. [2021-10-08 14:42:28,840 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 5642 transitions. Word has length 38 [2021-10-08 14:42:28,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:28,840 INFO L470 AbstractCegarLoop]: Abstraction has 2018 states and 5642 transitions. [2021-10-08 14:42:28,841 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) [2021-10-08 14:42:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 5642 transitions. [2021-10-08 14:42:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:28,846 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:28,846 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] [2021-10-08 14:42:28,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-10-08 14:42:28,846 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)] === [2021-10-08 14:42:28,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:28,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1390755681, now seen corresponding path program 201 times [2021-10-08 14:42:28,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:28,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959669391] [2021-10-08 14:42:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:28,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:28,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:28,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:28,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959669391] [2021-10-08 14:42:28,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959669391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:28,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:28,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:28,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850838954] [2021-10-08 14:42:28,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:28,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:28,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:28,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:28,925 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) [2021-10-08 14:42:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:29,238 INFO L93 Difference]: Finished difference Result 1930 states and 5399 transitions. [2021-10-08 14:42:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:29,238 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 [2021-10-08 14:42:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:29,242 INFO L225 Difference]: With dead ends: 1930 [2021-10-08 14:42:29,242 INFO L226 Difference]: Without dead ends: 1798 [2021-10-08 14:42:29,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 107.8ms TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-08 14:42:29,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-10-08 14:42:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1736. [2021-10-08 14:42:29,263 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) [2021-10-08 14:42:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 4979 transitions. [2021-10-08 14:42:29,267 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 4979 transitions. Word has length 38 [2021-10-08 14:42:29,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:29,267 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 4979 transitions. [2021-10-08 14:42:29,267 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) [2021-10-08 14:42:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 4979 transitions. [2021-10-08 14:42:29,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:29,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:29,270 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:29,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-10-08 14:42:29,271 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)] === [2021-10-08 14:42:29,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:29,271 INFO L82 PathProgramCache]: Analyzing trace with hash -898426641, now seen corresponding path program 202 times [2021-10-08 14:42:29,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:29,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822500546] [2021-10-08 14:42:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:29,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:29,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:29,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822500546] [2021-10-08 14:42:29,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822500546] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:29,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:29,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:29,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197963549] [2021-10-08 14:42:29,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:29,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:29,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:29,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:29,383 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) [2021-10-08 14:42:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:29,829 INFO L93 Difference]: Finished difference Result 1798 states and 5090 transitions. [2021-10-08 14:42:29,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:29,829 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 [2021-10-08 14:42:29,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:29,833 INFO L225 Difference]: With dead ends: 1798 [2021-10-08 14:42:29,833 INFO L226 Difference]: Without dead ends: 1786 [2021-10-08 14:42:29,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-10-08 14:42:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1736. [2021-10-08 14:42:29,856 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) [2021-10-08 14:42:29,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 4973 transitions. [2021-10-08 14:42:29,860 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 4973 transitions. Word has length 38 [2021-10-08 14:42:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:29,860 INFO L470 AbstractCegarLoop]: Abstraction has 1736 states and 4973 transitions. [2021-10-08 14:42:29,860 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) [2021-10-08 14:42:29,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 4973 transitions. [2021-10-08 14:42:29,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:29,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:29,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:29,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-10-08 14:42:29,863 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)] === [2021-10-08 14:42:29,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:29,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1063027391, now seen corresponding path program 203 times [2021-10-08 14:42:29,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:29,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627112371] [2021-10-08 14:42:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:29,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:29,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:29,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627112371] [2021-10-08 14:42:29,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627112371] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:29,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:29,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:29,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93829561] [2021-10-08 14:42:29,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:29,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:29,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:29,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:29,969 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) [2021-10-08 14:42:30,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:30,503 INFO L93 Difference]: Finished difference Result 2064 states and 5699 transitions. [2021-10-08 14:42:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:30,503 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 [2021-10-08 14:42:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:30,507 INFO L225 Difference]: With dead ends: 2064 [2021-10-08 14:42:30,507 INFO L226 Difference]: Without dead ends: 2056 [2021-10-08 14:42:30,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 188.5ms TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2021-10-08 14:42:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1732. [2021-10-08 14:42:30,528 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) [2021-10-08 14:42:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 4963 transitions. [2021-10-08 14:42:30,532 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 4963 transitions. Word has length 38 [2021-10-08 14:42:30,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:30,532 INFO L470 AbstractCegarLoop]: Abstraction has 1732 states and 4963 transitions. [2021-10-08 14:42:30,532 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) [2021-10-08 14:42:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 4963 transitions. [2021-10-08 14:42:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:30,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:30,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:30,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-10-08 14:42:30,535 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)] === [2021-10-08 14:42:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1462176113, now seen corresponding path program 204 times [2021-10-08 14:42:30,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:30,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527725130] [2021-10-08 14:42:30,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:30,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:30,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527725130] [2021-10-08 14:42:30,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527725130] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:30,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:30,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:30,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407159437] [2021-10-08 14:42:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:30,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:30,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:30,638 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) [2021-10-08 14:42:31,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:31,228 INFO L93 Difference]: Finished difference Result 2100 states and 5769 transitions. [2021-10-08 14:42:31,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:31,229 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 [2021-10-08 14:42:31,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:31,232 INFO L225 Difference]: With dead ends: 2100 [2021-10-08 14:42:31,232 INFO L226 Difference]: Without dead ends: 2086 [2021-10-08 14:42:31,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 212.5ms TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2021-10-08 14:42:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1724. [2021-10-08 14:42:31,255 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) [2021-10-08 14:42:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4949 transitions. [2021-10-08 14:42:31,258 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4949 transitions. Word has length 38 [2021-10-08 14:42:31,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:31,258 INFO L470 AbstractCegarLoop]: Abstraction has 1724 states and 4949 transitions. [2021-10-08 14:42:31,258 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) [2021-10-08 14:42:31,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4949 transitions. [2021-10-08 14:42:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:31,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:31,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:31,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-10-08 14:42:31,262 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)] === [2021-10-08 14:42:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:31,262 INFO L82 PathProgramCache]: Analyzing trace with hash 269602841, now seen corresponding path program 205 times [2021-10-08 14:42:31,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:31,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120775871] [2021-10-08 14:42:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:31,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:31,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:31,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120775871] [2021-10-08 14:42:31,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120775871] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:31,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:31,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:31,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402197907] [2021-10-08 14:42:31,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:31,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:31,360 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) [2021-10-08 14:42:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:31,825 INFO L93 Difference]: Finished difference Result 1786 states and 5060 transitions. [2021-10-08 14:42:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:31,826 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 [2021-10-08 14:42:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:31,829 INFO L225 Difference]: With dead ends: 1786 [2021-10-08 14:42:31,829 INFO L226 Difference]: Without dead ends: 1770 [2021-10-08 14:42:31,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 201.2ms TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2021-10-08 14:42:31,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1722. [2021-10-08 14:42:31,850 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) [2021-10-08 14:42:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 4944 transitions. [2021-10-08 14:42:31,854 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 4944 transitions. Word has length 38 [2021-10-08 14:42:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:31,854 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 4944 transitions. [2021-10-08 14:42:31,854 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) [2021-10-08 14:42:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 4944 transitions. [2021-10-08 14:42:31,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:31,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:31,857 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:31,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-10-08 14:42:31,857 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)] === [2021-10-08 14:42:31,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:31,857 INFO L82 PathProgramCache]: Analyzing trace with hash -936201083, now seen corresponding path program 206 times [2021-10-08 14:42:31,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:31,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709367617] [2021-10-08 14:42:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:31,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:31,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:31,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709367617] [2021-10-08 14:42:31,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709367617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:31,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:31,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:31,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491828737] [2021-10-08 14:42:31,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:31,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:31,948 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) [2021-10-08 14:42:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:32,423 INFO L93 Difference]: Finished difference Result 1802 states and 5082 transitions. [2021-10-08 14:42:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:32,423 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 [2021-10-08 14:42:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:32,427 INFO L225 Difference]: With dead ends: 1802 [2021-10-08 14:42:32,427 INFO L226 Difference]: Without dead ends: 1776 [2021-10-08 14:42:32,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 190.8ms TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:32,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-10-08 14:42:32,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1716. [2021-10-08 14:42:32,447 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) [2021-10-08 14:42:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 4925 transitions. [2021-10-08 14:42:32,451 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 4925 transitions. Word has length 38 [2021-10-08 14:42:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:32,451 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 4925 transitions. [2021-10-08 14:42:32,451 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) [2021-10-08 14:42:32,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 4925 transitions. [2021-10-08 14:42:32,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:32,454 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:32,454 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] [2021-10-08 14:42:32,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-10-08 14:42:32,454 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)] === [2021-10-08 14:42:32,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:32,454 INFO L82 PathProgramCache]: Analyzing trace with hash 161795417, now seen corresponding path program 207 times [2021-10-08 14:42:32,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:32,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847207448] [2021-10-08 14:42:32,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:32,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:32,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:32,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847207448] [2021-10-08 14:42:32,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847207448] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:32,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:32,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:32,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257527206] [2021-10-08 14:42:32,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:32,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:32,551 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) [2021-10-08 14:42:32,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:32,984 INFO L93 Difference]: Finished difference Result 1822 states and 5133 transitions. [2021-10-08 14:42:32,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:32,984 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 [2021-10-08 14:42:32,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:32,988 INFO L225 Difference]: With dead ends: 1822 [2021-10-08 14:42:32,988 INFO L226 Difference]: Without dead ends: 1802 [2021-10-08 14:42:32,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 176.3ms TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:32,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-10-08 14:42:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1716. [2021-10-08 14:42:33,009 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) [2021-10-08 14:42:33,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 4919 transitions. [2021-10-08 14:42:33,013 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 4919 transitions. Word has length 38 [2021-10-08 14:42:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:33,013 INFO L470 AbstractCegarLoop]: Abstraction has 1716 states and 4919 transitions. [2021-10-08 14:42:33,014 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) [2021-10-08 14:42:33,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 4919 transitions. [2021-10-08 14:42:33,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:33,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:33,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:33,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-10-08 14:42:33,017 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)] === [2021-10-08 14:42:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:33,017 INFO L82 PathProgramCache]: Analyzing trace with hash 447545503, now seen corresponding path program 208 times [2021-10-08 14:42:33,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:33,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976249851] [2021-10-08 14:42:33,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:33,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:33,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:33,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976249851] [2021-10-08 14:42:33,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976249851] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:33,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:33,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:33,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140347634] [2021-10-08 14:42:33,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:33,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:33,154 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) [2021-10-08 14:42:33,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:33,717 INFO L93 Difference]: Finished difference Result 2034 states and 5630 transitions. [2021-10-08 14:42:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:33,717 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 [2021-10-08 14:42:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:33,721 INFO L225 Difference]: With dead ends: 2034 [2021-10-08 14:42:33,721 INFO L226 Difference]: Without dead ends: 2016 [2021-10-08 14:42:33,722 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 206.4ms TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-10-08 14:42:33,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1710. [2021-10-08 14:42:33,745 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) [2021-10-08 14:42:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 4904 transitions. [2021-10-08 14:42:33,749 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 4904 transitions. Word has length 38 [2021-10-08 14:42:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:33,749 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 4904 transitions. [2021-10-08 14:42:33,749 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) [2021-10-08 14:42:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 4904 transitions. [2021-10-08 14:42:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:33,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:33,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-10-08 14:42:33,752 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)] === [2021-10-08 14:42:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:33,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1756964559, now seen corresponding path program 209 times [2021-10-08 14:42:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:33,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819778702] [2021-10-08 14:42:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:33,753 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:33,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:33,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819778702] [2021-10-08 14:42:33,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819778702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:33,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:33,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:33,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077890372] [2021-10-08 14:42:33,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:33,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:33,863 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) [2021-10-08 14:42:34,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:34,629 INFO L93 Difference]: Finished difference Result 2072 states and 5703 transitions. [2021-10-08 14:42:34,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:34,630 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 [2021-10-08 14:42:34,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:34,633 INFO L225 Difference]: With dead ends: 2072 [2021-10-08 14:42:34,633 INFO L226 Difference]: Without dead ends: 2050 [2021-10-08 14:42:34,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 235.7ms TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:34,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2021-10-08 14:42:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1702. [2021-10-08 14:42:34,659 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) [2021-10-08 14:42:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 4890 transitions. [2021-10-08 14:42:34,664 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 4890 transitions. Word has length 38 [2021-10-08 14:42:34,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:34,665 INFO L470 AbstractCegarLoop]: Abstraction has 1702 states and 4890 transitions. [2021-10-08 14:42:34,665 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) [2021-10-08 14:42:34,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 4890 transitions. [2021-10-08 14:42:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:34,669 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:34,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:34,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-10-08 14:42:34,670 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)] === [2021-10-08 14:42:34,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -231417127, now seen corresponding path program 210 times [2021-10-08 14:42:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:34,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33606502] [2021-10-08 14:42:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:34,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:34,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:34,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33606502] [2021-10-08 14:42:34,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33606502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:34,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:34,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:34,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846995675] [2021-10-08 14:42:34,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:34,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:34,851 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) [2021-10-08 14:42:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:35,494 INFO L93 Difference]: Finished difference Result 1808 states and 5098 transitions. [2021-10-08 14:42:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:35,495 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 [2021-10-08 14:42:35,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:35,499 INFO L225 Difference]: With dead ends: 1808 [2021-10-08 14:42:35,499 INFO L226 Difference]: Without dead ends: 1784 [2021-10-08 14:42:35,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 256.2ms TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2021-10-08 14:42:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1700. [2021-10-08 14:42:35,527 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) [2021-10-08 14:42:35,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 4885 transitions. [2021-10-08 14:42:35,532 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 4885 transitions. Word has length 38 [2021-10-08 14:42:35,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:35,532 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 4885 transitions. [2021-10-08 14:42:35,532 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) [2021-10-08 14:42:35,532 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 4885 transitions. [2021-10-08 14:42:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:35,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:35,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:35,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-10-08 14:42:35,535 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)] === [2021-10-08 14:42:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1799661295, now seen corresponding path program 211 times [2021-10-08 14:42:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:35,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43615464] [2021-10-08 14:42:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:35,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:35,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:35,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43615464] [2021-10-08 14:42:35,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43615464] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:35,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:35,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:35,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087309840] [2021-10-08 14:42:35,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:35,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:35,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:35,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:35,687 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) [2021-10-08 14:42:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:36,301 INFO L93 Difference]: Finished difference Result 1814 states and 5101 transitions. [2021-10-08 14:42:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:36,302 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 [2021-10-08 14:42:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:36,305 INFO L225 Difference]: With dead ends: 1814 [2021-10-08 14:42:36,305 INFO L226 Difference]: Without dead ends: 1756 [2021-10-08 14:42:36,306 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 268.9ms TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2021-10-08 14:42:36,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1642. [2021-10-08 14:42:36,333 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) [2021-10-08 14:42:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 4774 transitions. [2021-10-08 14:42:36,338 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 4774 transitions. Word has length 38 [2021-10-08 14:42:36,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:36,339 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 4774 transitions. [2021-10-08 14:42:36,339 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) [2021-10-08 14:42:36,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 4774 transitions. [2021-10-08 14:42:36,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:36,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:36,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:36,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-10-08 14:42:36,346 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)] === [2021-10-08 14:42:36,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:36,347 INFO L82 PathProgramCache]: Analyzing trace with hash 640794507, now seen corresponding path program 212 times [2021-10-08 14:42:36,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:36,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956131822] [2021-10-08 14:42:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:36,348 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:36,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:36,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956131822] [2021-10-08 14:42:36,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956131822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:36,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:36,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-08 14:42:36,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723107659] [2021-10-08 14:42:36,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 14:42:36,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 14:42:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-08 14:42:36,541 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) [2021-10-08 14:42:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:36,735 INFO L93 Difference]: Finished difference Result 1831 states and 5216 transitions. [2021-10-08 14:42:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 14:42:36,735 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 [2021-10-08 14:42:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:36,739 INFO L225 Difference]: With dead ends: 1831 [2021-10-08 14:42:36,739 INFO L226 Difference]: Without dead ends: 1440 [2021-10-08 14:42:36,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-08 14:42:36,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1440. [2021-10-08 14:42:36,757 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) [2021-10-08 14:42:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4265 transitions. [2021-10-08 14:42:36,760 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4265 transitions. Word has length 38 [2021-10-08 14:42:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:36,760 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4265 transitions. [2021-10-08 14:42:36,760 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) [2021-10-08 14:42:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4265 transitions. [2021-10-08 14:42:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:36,762 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:36,763 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] [2021-10-08 14:42:36,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-10-08 14:42:36,763 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)] === [2021-10-08 14:42:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:36,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1871808187, now seen corresponding path program 213 times [2021-10-08 14:42:36,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:36,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871695075] [2021-10-08 14:42:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:36,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:36,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:36,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:36,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871695075] [2021-10-08 14:42:36,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871695075] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:36,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:36,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:36,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71689425] [2021-10-08 14:42:36,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:36,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:36,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:36,892 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) [2021-10-08 14:42:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:37,351 INFO L93 Difference]: Finished difference Result 1480 states and 4323 transitions. [2021-10-08 14:42:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:37,351 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 [2021-10-08 14:42:37,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:37,354 INFO L225 Difference]: With dead ends: 1480 [2021-10-08 14:42:37,354 INFO L226 Difference]: Without dead ends: 1460 [2021-10-08 14:42:37,355 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 158.6ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-08 14:42:37,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1440. [2021-10-08 14:42:37,373 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) [2021-10-08 14:42:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4259 transitions. [2021-10-08 14:42:37,376 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4259 transitions. Word has length 38 [2021-10-08 14:42:37,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:37,377 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4259 transitions. [2021-10-08 14:42:37,377 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) [2021-10-08 14:42:37,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4259 transitions. [2021-10-08 14:42:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:37,379 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:37,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:37,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-10-08 14:42:37,379 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)] === [2021-10-08 14:42:37,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:37,380 INFO L82 PathProgramCache]: Analyzing trace with hash 459053497, now seen corresponding path program 214 times [2021-10-08 14:42:37,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:37,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45732357] [2021-10-08 14:42:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:37,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:37,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:37,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45732357] [2021-10-08 14:42:37,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45732357] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:37,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:37,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:37,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109858401] [2021-10-08 14:42:37,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:37,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:37,464 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) [2021-10-08 14:42:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:37,834 INFO L93 Difference]: Finished difference Result 1594 states and 4566 transitions. [2021-10-08 14:42:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:37,835 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 [2021-10-08 14:42:37,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:37,838 INFO L225 Difference]: With dead ends: 1594 [2021-10-08 14:42:37,838 INFO L226 Difference]: Without dead ends: 1586 [2021-10-08 14:42:37,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-10-08 14:42:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1442. [2021-10-08 14:42:37,856 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) [2021-10-08 14:42:37,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4264 transitions. [2021-10-08 14:42:37,859 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4264 transitions. Word has length 38 [2021-10-08 14:42:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:37,859 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4264 transitions. [2021-10-08 14:42:37,859 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) [2021-10-08 14:42:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4264 transitions. [2021-10-08 14:42:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:37,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:37,861 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] [2021-10-08 14:42:37,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-10-08 14:42:37,862 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)] === [2021-10-08 14:42:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1635656113, now seen corresponding path program 215 times [2021-10-08 14:42:37,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:37,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891019862] [2021-10-08 14:42:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:37,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:37,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:37,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:37,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891019862] [2021-10-08 14:42:37,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891019862] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:37,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:37,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:37,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691855486] [2021-10-08 14:42:37,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:37,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:37,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:37,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:37,971 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) [2021-10-08 14:42:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:38,433 INFO L93 Difference]: Finished difference Result 1592 states and 4559 transitions. [2021-10-08 14:42:38,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:38,433 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 [2021-10-08 14:42:38,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:38,436 INFO L225 Difference]: With dead ends: 1592 [2021-10-08 14:42:38,436 INFO L226 Difference]: Without dead ends: 1584 [2021-10-08 14:42:38,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 195.0ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:38,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1584 states. [2021-10-08 14:42:38,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1584 to 1448. [2021-10-08 14:42:38,454 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) [2021-10-08 14:42:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1448 states to 1448 states and 4277 transitions. [2021-10-08 14:42:38,457 INFO L78 Accepts]: Start accepts. Automaton has 1448 states and 4277 transitions. Word has length 38 [2021-10-08 14:42:38,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:38,457 INFO L470 AbstractCegarLoop]: Abstraction has 1448 states and 4277 transitions. [2021-10-08 14:42:38,457 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) [2021-10-08 14:42:38,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1448 states and 4277 transitions. [2021-10-08 14:42:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:38,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:38,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:38,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-10-08 14:42:38,460 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)] === [2021-10-08 14:42:38,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:38,460 INFO L82 PathProgramCache]: Analyzing trace with hash 296545461, now seen corresponding path program 216 times [2021-10-08 14:42:38,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:38,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863538376] [2021-10-08 14:42:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:38,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:38,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:38,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863538376] [2021-10-08 14:42:38,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863538376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:38,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:38,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:38,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295486590] [2021-10-08 14:42:38,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:38,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:38,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:38,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:38,567 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) [2021-10-08 14:42:38,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:38,946 INFO L93 Difference]: Finished difference Result 1534 states and 4434 transitions. [2021-10-08 14:42:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:38,946 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 [2021-10-08 14:42:38,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:38,951 INFO L225 Difference]: With dead ends: 1534 [2021-10-08 14:42:38,951 INFO L226 Difference]: Without dead ends: 1516 [2021-10-08 14:42:38,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 135.7ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-08 14:42:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1442. [2021-10-08 14:42:38,977 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) [2021-10-08 14:42:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4262 transitions. [2021-10-08 14:42:38,981 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4262 transitions. Word has length 38 [2021-10-08 14:42:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:38,981 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4262 transitions. [2021-10-08 14:42:38,981 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) [2021-10-08 14:42:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4262 transitions. [2021-10-08 14:42:38,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:38,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:38,983 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] [2021-10-08 14:42:38,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-10-08 14:42:38,984 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)] === [2021-10-08 14:42:38,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:38,984 INFO L82 PathProgramCache]: Analyzing trace with hash -963668901, now seen corresponding path program 217 times [2021-10-08 14:42:38,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:38,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748241618] [2021-10-08 14:42:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:38,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:39,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:39,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748241618] [2021-10-08 14:42:39,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748241618] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:39,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:39,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:39,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669766050] [2021-10-08 14:42:39,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:39,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:39,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:39,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:39,108 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) [2021-10-08 14:42:39,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:39,543 INFO L93 Difference]: Finished difference Result 1508 states and 4381 transitions. [2021-10-08 14:42:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:39,544 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 [2021-10-08 14:42:39,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:39,546 INFO L225 Difference]: With dead ends: 1508 [2021-10-08 14:42:39,546 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 14:42:39,548 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 177.7ms TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:42:39,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 14:42:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1434. [2021-10-08 14:42:39,565 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) [2021-10-08 14:42:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 4244 transitions. [2021-10-08 14:42:39,568 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 4244 transitions. Word has length 38 [2021-10-08 14:42:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:39,569 INFO L470 AbstractCegarLoop]: Abstraction has 1434 states and 4244 transitions. [2021-10-08 14:42:39,569 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) [2021-10-08 14:42:39,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 4244 transitions. [2021-10-08 14:42:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:39,571 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:39,571 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:39,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-10-08 14:42:39,571 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)] === [2021-10-08 14:42:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash -50126625, now seen corresponding path program 218 times [2021-10-08 14:42:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:39,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884743476] [2021-10-08 14:42:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:39,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:39,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:39,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:39,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884743476] [2021-10-08 14:42:39,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884743476] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:39,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:39,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:39,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431340612] [2021-10-08 14:42:39,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:39,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:39,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:39,674 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) [2021-10-08 14:42:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:40,146 INFO L93 Difference]: Finished difference Result 1508 states and 4382 transitions. [2021-10-08 14:42:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:40,147 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 [2021-10-08 14:42:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:40,150 INFO L225 Difference]: With dead ends: 1508 [2021-10-08 14:42:40,150 INFO L226 Difference]: Without dead ends: 1480 [2021-10-08 14:42:40,150 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 230.4ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-10-08 14:42:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1428. [2021-10-08 14:42:40,168 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) [2021-10-08 14:42:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 4229 transitions. [2021-10-08 14:42:40,171 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 4229 transitions. Word has length 38 [2021-10-08 14:42:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:40,171 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 4229 transitions. [2021-10-08 14:42:40,172 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) [2021-10-08 14:42:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 4229 transitions. [2021-10-08 14:42:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:40,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:40,174 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:40,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-10-08 14:42:40,174 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)] === [2021-10-08 14:42:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:40,174 INFO L82 PathProgramCache]: Analyzing trace with hash 141082295, now seen corresponding path program 219 times [2021-10-08 14:42:40,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:40,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26764824] [2021-10-08 14:42:40,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:40,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:40,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:40,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:40,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26764824] [2021-10-08 14:42:40,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26764824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:40,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:40,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:40,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75713488] [2021-10-08 14:42:40,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:40,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:40,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:40,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:40,278 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) [2021-10-08 14:42:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:40,797 INFO L93 Difference]: Finished difference Result 1536 states and 4443 transitions. [2021-10-08 14:42:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:40,797 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 [2021-10-08 14:42:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:40,800 INFO L225 Difference]: With dead ends: 1536 [2021-10-08 14:42:40,800 INFO L226 Difference]: Without dead ends: 1518 [2021-10-08 14:42:40,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 189.6ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-08 14:42:40,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1430. [2021-10-08 14:42:40,817 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) [2021-10-08 14:42:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4234 transitions. [2021-10-08 14:42:40,821 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4234 transitions. Word has length 38 [2021-10-08 14:42:40,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:40,821 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 4234 transitions. [2021-10-08 14:42:40,821 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) [2021-10-08 14:42:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4234 transitions. [2021-10-08 14:42:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:40,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:40,824 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] [2021-10-08 14:42:40,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-10-08 14:42:40,824 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)] === [2021-10-08 14:42:40,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:40,825 INFO L82 PathProgramCache]: Analyzing trace with hash -1557200689, now seen corresponding path program 220 times [2021-10-08 14:42:40,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:40,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462041766] [2021-10-08 14:42:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:40,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:40,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:40,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462041766] [2021-10-08 14:42:40,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462041766] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:40,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:40,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:40,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530726427] [2021-10-08 14:42:40,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:40,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:40,957 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) [2021-10-08 14:42:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:41,523 INFO L93 Difference]: Finished difference Result 1532 states and 4431 transitions. [2021-10-08 14:42:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:41,524 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 [2021-10-08 14:42:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:41,527 INFO L225 Difference]: With dead ends: 1532 [2021-10-08 14:42:41,527 INFO L226 Difference]: Without dead ends: 1516 [2021-10-08 14:42:41,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 241.9ms TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-08 14:42:41,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1436. [2021-10-08 14:42:41,547 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) [2021-10-08 14:42:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4247 transitions. [2021-10-08 14:42:41,550 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4247 transitions. Word has length 38 [2021-10-08 14:42:41,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:41,551 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4247 transitions. [2021-10-08 14:42:41,551 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) [2021-10-08 14:42:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4247 transitions. [2021-10-08 14:42:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:41,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:41,553 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] [2021-10-08 14:42:41,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-10-08 14:42:41,553 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)] === [2021-10-08 14:42:41,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash -2115866663, now seen corresponding path program 221 times [2021-10-08 14:42:41,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:41,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407352346] [2021-10-08 14:42:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:41,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:41,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:41,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407352346] [2021-10-08 14:42:41,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407352346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:41,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:41,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:41,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762023612] [2021-10-08 14:42:41,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:41,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:41,681 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) [2021-10-08 14:42:42,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:42,279 INFO L93 Difference]: Finished difference Result 1544 states and 4456 transitions. [2021-10-08 14:42:42,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:42,279 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 [2021-10-08 14:42:42,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:42,283 INFO L225 Difference]: With dead ends: 1544 [2021-10-08 14:42:42,283 INFO L226 Difference]: Without dead ends: 1518 [2021-10-08 14:42:42,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 254.5ms TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:42,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-08 14:42:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1430. [2021-10-08 14:42:42,304 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) [2021-10-08 14:42:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 4232 transitions. [2021-10-08 14:42:42,308 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 4232 transitions. Word has length 38 [2021-10-08 14:42:42,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:42,308 INFO L470 AbstractCegarLoop]: Abstraction has 1430 states and 4232 transitions. [2021-10-08 14:42:42,308 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) [2021-10-08 14:42:42,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 4232 transitions. [2021-10-08 14:42:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:42,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:42,311 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:42,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-10-08 14:42:42,311 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)] === [2021-10-08 14:42:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:42,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1700675621, now seen corresponding path program 222 times [2021-10-08 14:42:42,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:42,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091918644] [2021-10-08 14:42:42,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:42,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:42,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:42,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091918644] [2021-10-08 14:42:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091918644] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:42,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:42,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:42,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54152978] [2021-10-08 14:42:42,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:42,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:42,425 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) [2021-10-08 14:42:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:42,944 INFO L93 Difference]: Finished difference Result 1530 states and 4429 transitions. [2021-10-08 14:42:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:42,945 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 [2021-10-08 14:42:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:42,948 INFO L225 Difference]: With dead ends: 1530 [2021-10-08 14:42:42,948 INFO L226 Difference]: Without dead ends: 1500 [2021-10-08 14:42:42,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 270.6ms TimeCoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2021-10-08 14:42:42,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-10-08 14:42:42,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1422. [2021-10-08 14:42:42,965 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) [2021-10-08 14:42:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 4214 transitions. [2021-10-08 14:42:42,968 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 4214 transitions. Word has length 38 [2021-10-08 14:42:42,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:42,968 INFO L470 AbstractCegarLoop]: Abstraction has 1422 states and 4214 transitions. [2021-10-08 14:42:42,968 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) [2021-10-08 14:42:42,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 4214 transitions. [2021-10-08 14:42:42,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:42,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:42,970 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] [2021-10-08 14:42:42,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-10-08 14:42:42,971 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)] === [2021-10-08 14:42:42,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1110311841, now seen corresponding path program 223 times [2021-10-08 14:42:42,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:42,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682742874] [2021-10-08 14:42:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:42,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:43,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:43,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682742874] [2021-10-08 14:42:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682742874] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:43,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:43,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:43,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989689961] [2021-10-08 14:42:43,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:43,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:43,078 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) [2021-10-08 14:42:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:43,512 INFO L93 Difference]: Finished difference Result 1596 states and 4589 transitions. [2021-10-08 14:42:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:43,512 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 [2021-10-08 14:42:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:43,515 INFO L225 Difference]: With dead ends: 1596 [2021-10-08 14:42:43,515 INFO L226 Difference]: Without dead ends: 1588 [2021-10-08 14:42:43,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-10-08 14:42:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 1438. [2021-10-08 14:42:43,532 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) [2021-10-08 14:42:43,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 4258 transitions. [2021-10-08 14:42:43,535 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 4258 transitions. Word has length 38 [2021-10-08 14:42:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:43,535 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 4258 transitions. [2021-10-08 14:42:43,535 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) [2021-10-08 14:42:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 4258 transitions. [2021-10-08 14:42:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:43,537 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:43,537 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:43,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-10-08 14:42:43,538 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)] === [2021-10-08 14:42:43,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:43,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1380555707, now seen corresponding path program 224 times [2021-10-08 14:42:43,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:43,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515304199] [2021-10-08 14:42:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:43,538 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:43,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:43,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:43,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515304199] [2021-10-08 14:42:43,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515304199] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:43,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:43,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:43,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389546415] [2021-10-08 14:42:43,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:43,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:43,651 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) [2021-10-08 14:42:44,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:44,110 INFO L93 Difference]: Finished difference Result 1594 states and 4586 transitions. [2021-10-08 14:42:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:44,111 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 [2021-10-08 14:42:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:44,114 INFO L225 Difference]: With dead ends: 1594 [2021-10-08 14:42:44,114 INFO L226 Difference]: Without dead ends: 1576 [2021-10-08 14:42:44,114 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 180.5ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2021-10-08 14:42:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1442. [2021-10-08 14:42:44,131 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) [2021-10-08 14:42:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 4266 transitions. [2021-10-08 14:42:44,134 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 4266 transitions. Word has length 38 [2021-10-08 14:42:44,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:44,135 INFO L470 AbstractCegarLoop]: Abstraction has 1442 states and 4266 transitions. [2021-10-08 14:42:44,135 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) [2021-10-08 14:42:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 4266 transitions. [2021-10-08 14:42:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:44,137 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:44,137 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:44,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-10-08 14:42:44,137 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)] === [2021-10-08 14:42:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:44,138 INFO L82 PathProgramCache]: Analyzing trace with hash 683113723, now seen corresponding path program 225 times [2021-10-08 14:42:44,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:44,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103806543] [2021-10-08 14:42:44,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:44,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:44,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:44,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103806543] [2021-10-08 14:42:44,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103806543] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:44,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:44,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:44,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584232764] [2021-10-08 14:42:44,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:44,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:44,241 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) [2021-10-08 14:42:44,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:44,594 INFO L93 Difference]: Finished difference Result 1580 states and 4541 transitions. [2021-10-08 14:42:44,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:44,594 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 [2021-10-08 14:42:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:44,597 INFO L225 Difference]: With dead ends: 1580 [2021-10-08 14:42:44,597 INFO L226 Difference]: Without dead ends: 1562 [2021-10-08 14:42:44,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:42:44,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-08 14:42:44,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1436. [2021-10-08 14:42:44,617 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) [2021-10-08 14:42:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 4247 transitions. [2021-10-08 14:42:44,620 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 4247 transitions. Word has length 38 [2021-10-08 14:42:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 1436 states and 4247 transitions. [2021-10-08 14:42:44,620 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) [2021-10-08 14:42:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 4247 transitions. [2021-10-08 14:42:44,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:44,622 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:44,622 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] [2021-10-08 14:42:44,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-10-08 14:42:44,623 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)] === [2021-10-08 14:42:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:44,623 INFO L82 PathProgramCache]: Analyzing trace with hash 590596383, now seen corresponding path program 226 times [2021-10-08 14:42:44,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:44,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580537722] [2021-10-08 14:42:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:44,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:44,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:44,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580537722] [2021-10-08 14:42:44,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580537722] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:44,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:44,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:44,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162869595] [2021-10-08 14:42:44,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:44,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:44,757 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) [2021-10-08 14:42:45,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:45,231 INFO L93 Difference]: Finished difference Result 1606 states and 4599 transitions. [2021-10-08 14:42:45,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:45,232 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 [2021-10-08 14:42:45,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:45,235 INFO L225 Difference]: With dead ends: 1606 [2021-10-08 14:42:45,235 INFO L226 Difference]: Without dead ends: 1574 [2021-10-08 14:42:45,235 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 185.9ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-10-08 14:42:45,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1424. [2021-10-08 14:42:45,256 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) [2021-10-08 14:42:45,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4219 transitions. [2021-10-08 14:42:45,259 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4219 transitions. Word has length 38 [2021-10-08 14:42:45,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:45,260 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4219 transitions. [2021-10-08 14:42:45,260 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) [2021-10-08 14:42:45,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4219 transitions. [2021-10-08 14:42:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:45,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:45,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:45,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-10-08 14:42:45,262 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)] === [2021-10-08 14:42:45,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:45,262 INFO L82 PathProgramCache]: Analyzing trace with hash 831642173, now seen corresponding path program 227 times [2021-10-08 14:42:45,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:45,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004058884] [2021-10-08 14:42:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:45,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:45,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:45,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004058884] [2021-10-08 14:42:45,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004058884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:45,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:45,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:45,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187994234] [2021-10-08 14:42:45,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:45,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:45,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:45,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:45,338 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) [2021-10-08 14:42:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:45,691 INFO L93 Difference]: Finished difference Result 1618 states and 4636 transitions. [2021-10-08 14:42:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:45,691 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 [2021-10-08 14:42:45,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:45,694 INFO L225 Difference]: With dead ends: 1618 [2021-10-08 14:42:45,694 INFO L226 Difference]: Without dead ends: 1610 [2021-10-08 14:42:45,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:42:45,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-10-08 14:42:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1426. [2021-10-08 14:42:45,714 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) [2021-10-08 14:42:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4224 transitions. [2021-10-08 14:42:45,717 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4224 transitions. Word has length 38 [2021-10-08 14:42:45,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:45,717 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4224 transitions. [2021-10-08 14:42:45,718 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) [2021-10-08 14:42:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4224 transitions. [2021-10-08 14:42:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:45,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:45,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:45,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-10-08 14:42:45,720 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)] === [2021-10-08 14:42:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:45,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1263067437, now seen corresponding path program 228 times [2021-10-08 14:42:45,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:45,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232044025] [2021-10-08 14:42:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:45,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:45,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:45,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:45,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232044025] [2021-10-08 14:42:45,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232044025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:45,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:45,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:45,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031582426] [2021-10-08 14:42:45,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:45,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:45,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:45,812 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) [2021-10-08 14:42:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:46,229 INFO L93 Difference]: Finished difference Result 1616 states and 4629 transitions. [2021-10-08 14:42:46,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:46,230 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 [2021-10-08 14:42:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:46,233 INFO L225 Difference]: With dead ends: 1616 [2021-10-08 14:42:46,233 INFO L226 Difference]: Without dead ends: 1608 [2021-10-08 14:42:46,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2021-10-08 14:42:46,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1432. [2021-10-08 14:42:46,254 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) [2021-10-08 14:42:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 4237 transitions. [2021-10-08 14:42:46,258 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 4237 transitions. Word has length 38 [2021-10-08 14:42:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 4237 transitions. [2021-10-08 14:42:46,259 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) [2021-10-08 14:42:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 4237 transitions. [2021-10-08 14:42:46,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:46,261 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:46,261 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:46,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-10-08 14:42:46,262 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)] === [2021-10-08 14:42:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:46,262 INFO L82 PathProgramCache]: Analyzing trace with hash 669134137, now seen corresponding path program 229 times [2021-10-08 14:42:46,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:46,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232567492] [2021-10-08 14:42:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:46,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:46,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:46,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232567492] [2021-10-08 14:42:46,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232567492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:46,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:46,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:46,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369442382] [2021-10-08 14:42:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:46,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:46,348 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) [2021-10-08 14:42:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:46,733 INFO L93 Difference]: Finished difference Result 1566 states and 4516 transitions. [2021-10-08 14:42:46,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:46,734 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 [2021-10-08 14:42:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:46,739 INFO L225 Difference]: With dead ends: 1566 [2021-10-08 14:42:46,739 INFO L226 Difference]: Without dead ends: 1548 [2021-10-08 14:42:46,739 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-08 14:42:46,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1426. [2021-10-08 14:42:46,774 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) [2021-10-08 14:42:46,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4222 transitions. [2021-10-08 14:42:46,779 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4222 transitions. Word has length 38 [2021-10-08 14:42:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:46,780 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4222 transitions. [2021-10-08 14:42:46,780 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) [2021-10-08 14:42:46,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4222 transitions. [2021-10-08 14:42:46,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:46,784 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:46,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:46,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-10-08 14:42:46,785 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)] === [2021-10-08 14:42:46,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:46,786 INFO L82 PathProgramCache]: Analyzing trace with hash -591080225, now seen corresponding path program 230 times [2021-10-08 14:42:46,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:46,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132714391] [2021-10-08 14:42:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:46,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:46,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:46,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132714391] [2021-10-08 14:42:46,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132714391] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:46,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:46,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:46,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134016614] [2021-10-08 14:42:46,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:46,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:46,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:46,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:46,915 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) [2021-10-08 14:42:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:47,385 INFO L93 Difference]: Finished difference Result 1564 states and 4507 transitions. [2021-10-08 14:42:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:47,385 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 [2021-10-08 14:42:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:47,389 INFO L225 Difference]: With dead ends: 1564 [2021-10-08 14:42:47,389 INFO L226 Difference]: Without dead ends: 1548 [2021-10-08 14:42:47,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 205.5ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-10-08 14:42:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1424. [2021-10-08 14:42:47,409 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) [2021-10-08 14:42:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4217 transitions. [2021-10-08 14:42:47,412 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4217 transitions. Word has length 38 [2021-10-08 14:42:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:47,413 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4217 transitions. [2021-10-08 14:42:47,413 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) [2021-10-08 14:42:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4217 transitions. [2021-10-08 14:42:47,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:47,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:47,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:47,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-10-08 14:42:47,415 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)] === [2021-10-08 14:42:47,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1859361513, now seen corresponding path program 231 times [2021-10-08 14:42:47,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:47,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915174662] [2021-10-08 14:42:47,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:47,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:47,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:47,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915174662] [2021-10-08 14:42:47,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915174662] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:47,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:47,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:47,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165789152] [2021-10-08 14:42:47,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:47,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:47,530 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) [2021-10-08 14:42:47,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:47,984 INFO L93 Difference]: Finished difference Result 1580 states and 4553 transitions. [2021-10-08 14:42:47,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:47,985 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 [2021-10-08 14:42:47,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:47,988 INFO L225 Difference]: With dead ends: 1580 [2021-10-08 14:42:47,988 INFO L226 Difference]: Without dead ends: 1562 [2021-10-08 14:42:47,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-08 14:42:48,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1426. [2021-10-08 14:42:48,006 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) [2021-10-08 14:42:48,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4222 transitions. [2021-10-08 14:42:48,009 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4222 transitions. Word has length 38 [2021-10-08 14:42:48,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:48,009 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4222 transitions. [2021-10-08 14:42:48,009 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) [2021-10-08 14:42:48,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4222 transitions. [2021-10-08 14:42:48,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:48,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:48,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:48,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-10-08 14:42:48,012 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)] === [2021-10-08 14:42:48,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:48,014 INFO L82 PathProgramCache]: Analyzing trace with hash 737322799, now seen corresponding path program 232 times [2021-10-08 14:42:48,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:48,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897367524] [2021-10-08 14:42:48,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:48,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:48,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:48,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897367524] [2021-10-08 14:42:48,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897367524] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:48,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:48,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:48,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760992849] [2021-10-08 14:42:48,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:48,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:48,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:48,143 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) [2021-10-08 14:42:48,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:48,623 INFO L93 Difference]: Finished difference Result 1576 states and 4541 transitions. [2021-10-08 14:42:48,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:48,624 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 [2021-10-08 14:42:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:48,627 INFO L225 Difference]: With dead ends: 1576 [2021-10-08 14:42:48,627 INFO L226 Difference]: Without dead ends: 1560 [2021-10-08 14:42:48,627 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 235.2ms TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:48,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-10-08 14:42:48,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1432. [2021-10-08 14:42:48,644 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) [2021-10-08 14:42:48,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 4235 transitions. [2021-10-08 14:42:48,646 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 4235 transitions. Word has length 38 [2021-10-08 14:42:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:48,647 INFO L470 AbstractCegarLoop]: Abstraction has 1432 states and 4235 transitions. [2021-10-08 14:42:48,647 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) [2021-10-08 14:42:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 4235 transitions. [2021-10-08 14:42:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:48,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:48,649 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] [2021-10-08 14:42:48,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-10-08 14:42:48,649 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)] === [2021-10-08 14:42:48,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:48,649 INFO L82 PathProgramCache]: Analyzing trace with hash 178656825, now seen corresponding path program 233 times [2021-10-08 14:42:48,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:48,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639210608] [2021-10-08 14:42:48,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:48,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:48,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:48,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639210608] [2021-10-08 14:42:48,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639210608] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:48,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:48,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:48,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753542454] [2021-10-08 14:42:48,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:48,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:48,763 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) [2021-10-08 14:42:49,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:49,264 INFO L93 Difference]: Finished difference Result 1588 states and 4566 transitions. [2021-10-08 14:42:49,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:49,265 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 [2021-10-08 14:42:49,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:49,268 INFO L225 Difference]: With dead ends: 1588 [2021-10-08 14:42:49,269 INFO L226 Difference]: Without dead ends: 1562 [2021-10-08 14:42:49,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 228.8ms TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:49,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2021-10-08 14:42:49,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1426. [2021-10-08 14:42:49,290 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) [2021-10-08 14:42:49,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 4220 transitions. [2021-10-08 14:42:49,293 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 4220 transitions. Word has length 38 [2021-10-08 14:42:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:49,293 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 4220 transitions. [2021-10-08 14:42:49,294 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) [2021-10-08 14:42:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4220 transitions. [2021-10-08 14:42:49,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:49,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:49,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:49,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-10-08 14:42:49,296 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)] === [2021-10-08 14:42:49,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:49,297 INFO L82 PathProgramCache]: Analyzing trace with hash 593847867, now seen corresponding path program 234 times [2021-10-08 14:42:49,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:49,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016665306] [2021-10-08 14:42:49,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:49,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:49,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:49,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016665306] [2021-10-08 14:42:49,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016665306] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:49,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:49,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:49,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694542836] [2021-10-08 14:42:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:49,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:49,435 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) [2021-10-08 14:42:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:49,999 INFO L93 Difference]: Finished difference Result 1574 states and 4539 transitions. [2021-10-08 14:42:49,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:49,999 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 [2021-10-08 14:42:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:50,002 INFO L225 Difference]: With dead ends: 1574 [2021-10-08 14:42:50,002 INFO L226 Difference]: Without dead ends: 1542 [2021-10-08 14:42:50,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 260.8ms TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2021-10-08 14:42:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2021-10-08 14:42:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1416. [2021-10-08 14:42:50,021 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) [2021-10-08 14:42:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4199 transitions. [2021-10-08 14:42:50,024 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4199 transitions. Word has length 38 [2021-10-08 14:42:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:50,024 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4199 transitions. [2021-10-08 14:42:50,024 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) [2021-10-08 14:42:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4199 transitions. [2021-10-08 14:42:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:50,026 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:50,027 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:50,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-10-08 14:42:50,027 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)] === [2021-10-08 14:42:50,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1323451083, now seen corresponding path program 235 times [2021-10-08 14:42:50,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:50,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862261454] [2021-10-08 14:42:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:50,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:50,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:50,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862261454] [2021-10-08 14:42:50,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862261454] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:50,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:50,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:50,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878051345] [2021-10-08 14:42:50,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:50,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:50,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:50,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:50,125 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) [2021-10-08 14:42:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:50,433 INFO L93 Difference]: Finished difference Result 1440 states and 4233 transitions. [2021-10-08 14:42:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:50,434 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 [2021-10-08 14:42:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:50,438 INFO L225 Difference]: With dead ends: 1440 [2021-10-08 14:42:50,438 INFO L226 Difference]: Without dead ends: 1420 [2021-10-08 14:42:50,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 135.9ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:50,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-08 14:42:50,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1416. [2021-10-08 14:42:50,460 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) [2021-10-08 14:42:50,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4193 transitions. [2021-10-08 14:42:50,464 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4193 transitions. Word has length 38 [2021-10-08 14:42:50,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:50,464 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 4193 transitions. [2021-10-08 14:42:50,465 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) [2021-10-08 14:42:50,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4193 transitions. [2021-10-08 14:42:50,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:50,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:50,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:50,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-10-08 14:42:50,468 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)] === [2021-10-08 14:42:50,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:50,468 INFO L82 PathProgramCache]: Analyzing trace with hash 657467375, now seen corresponding path program 236 times [2021-10-08 14:42:50,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:50,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010921095] [2021-10-08 14:42:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:50,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:50,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:50,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010921095] [2021-10-08 14:42:50,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010921095] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:50,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:50,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:50,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835885609] [2021-10-08 14:42:50,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:50,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:50,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:50,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:50,580 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) [2021-10-08 14:42:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:50,970 INFO L93 Difference]: Finished difference Result 1524 states and 4411 transitions. [2021-10-08 14:42:50,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:50,970 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 [2021-10-08 14:42:50,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:50,973 INFO L225 Difference]: With dead ends: 1524 [2021-10-08 14:42:50,973 INFO L226 Difference]: Without dead ends: 1516 [2021-10-08 14:42:50,974 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:50,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2021-10-08 14:42:50,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1418. [2021-10-08 14:42:50,991 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) [2021-10-08 14:42:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4198 transitions. [2021-10-08 14:42:50,994 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4198 transitions. Word has length 38 [2021-10-08 14:42:50,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:50,994 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 4198 transitions. [2021-10-08 14:42:50,994 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) [2021-10-08 14:42:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4198 transitions. [2021-10-08 14:42:50,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:50,996 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:50,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:50,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-10-08 14:42:50,997 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)] === [2021-10-08 14:42:50,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:50,997 INFO L82 PathProgramCache]: Analyzing trace with hash -450024191, now seen corresponding path program 237 times [2021-10-08 14:42:50,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:50,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548101529] [2021-10-08 14:42:50,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:50,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:51,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:51,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548101529] [2021-10-08 14:42:51,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548101529] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:51,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:51,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698826660] [2021-10-08 14:42:51,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:51,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:51,092 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) [2021-10-08 14:42:51,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:51,534 INFO L93 Difference]: Finished difference Result 1522 states and 4404 transitions. [2021-10-08 14:42:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:51,535 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 [2021-10-08 14:42:51,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:51,538 INFO L225 Difference]: With dead ends: 1522 [2021-10-08 14:42:51,538 INFO L226 Difference]: Without dead ends: 1514 [2021-10-08 14:42:51,538 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 185.0ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:51,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2021-10-08 14:42:51,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1424. [2021-10-08 14:42:51,556 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) [2021-10-08 14:42:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 4211 transitions. [2021-10-08 14:42:51,559 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 4211 transitions. Word has length 38 [2021-10-08 14:42:51,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:51,560 INFO L470 AbstractCegarLoop]: Abstraction has 1424 states and 4211 transitions. [2021-10-08 14:42:51,560 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) [2021-10-08 14:42:51,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 4211 transitions. [2021-10-08 14:42:51,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:51,562 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:51,562 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] [2021-10-08 14:42:51,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-10-08 14:42:51,562 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)] === [2021-10-08 14:42:51,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:51,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1444337811, now seen corresponding path program 238 times [2021-10-08 14:42:51,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:51,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849546534] [2021-10-08 14:42:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:51,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:51,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:51,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849546534] [2021-10-08 14:42:51,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849546534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:51,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:51,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:51,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581518642] [2021-10-08 14:42:51,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:51,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:51,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:51,663 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) [2021-10-08 14:42:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:51,995 INFO L93 Difference]: Finished difference Result 1464 states and 4279 transitions. [2021-10-08 14:42:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:51,996 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 [2021-10-08 14:42:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:51,998 INFO L225 Difference]: With dead ends: 1464 [2021-10-08 14:42:51,999 INFO L226 Difference]: Without dead ends: 1446 [2021-10-08 14:42:51,999 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-08 14:42:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1418. [2021-10-08 14:42:52,015 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) [2021-10-08 14:42:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 4196 transitions. [2021-10-08 14:42:52,018 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 4196 transitions. Word has length 38 [2021-10-08 14:42:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:52,019 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 4196 transitions. [2021-10-08 14:42:52,019 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) [2021-10-08 14:42:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 4196 transitions. [2021-10-08 14:42:52,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:52,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:52,021 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] [2021-10-08 14:42:52,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-10-08 14:42:52,021 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)] === [2021-10-08 14:42:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:52,022 INFO L82 PathProgramCache]: Analyzing trace with hash 136039125, now seen corresponding path program 239 times [2021-10-08 14:42:52,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:52,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055661708] [2021-10-08 14:42:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:52,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:52,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:52,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055661708] [2021-10-08 14:42:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055661708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:52,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:52,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76957719] [2021-10-08 14:42:52,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:52,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:52,119 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) [2021-10-08 14:42:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:52,489 INFO L93 Difference]: Finished difference Result 1460 states and 4267 transitions. [2021-10-08 14:42:52,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:52,489 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 [2021-10-08 14:42:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:52,492 INFO L225 Difference]: With dead ends: 1460 [2021-10-08 14:42:52,492 INFO L226 Difference]: Without dead ends: 1438 [2021-10-08 14:42:52,493 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 166.0ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:52,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-10-08 14:42:52,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1410. [2021-10-08 14:42:52,510 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) [2021-10-08 14:42:52,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 4178 transitions. [2021-10-08 14:42:52,513 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 4178 transitions. Word has length 38 [2021-10-08 14:42:52,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:52,513 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 4178 transitions. [2021-10-08 14:42:52,513 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) [2021-10-08 14:42:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 4178 transitions. [2021-10-08 14:42:52,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:52,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:52,516 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:52,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-10-08 14:42:52,516 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)] === [2021-10-08 14:42:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:52,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1412411295, now seen corresponding path program 240 times [2021-10-08 14:42:52,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:52,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621497269] [2021-10-08 14:42:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:52,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:52,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:52,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:52,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621497269] [2021-10-08 14:42:52,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621497269] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:52,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:52,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:52,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438910586] [2021-10-08 14:42:52,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:52,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:52,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:52,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:52,642 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) [2021-10-08 14:42:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:53,174 INFO L93 Difference]: Finished difference Result 1484 states and 4316 transitions. [2021-10-08 14:42:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 14:42:53,174 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 [2021-10-08 14:42:53,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:53,177 INFO L225 Difference]: With dead ends: 1484 [2021-10-08 14:42:53,177 INFO L226 Difference]: Without dead ends: 1456 [2021-10-08 14:42:53,177 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 244.8ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:53,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2021-10-08 14:42:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1404. [2021-10-08 14:42:53,194 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) [2021-10-08 14:42:53,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4163 transitions. [2021-10-08 14:42:53,197 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4163 transitions. Word has length 38 [2021-10-08 14:42:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:53,197 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4163 transitions. [2021-10-08 14:42:53,197 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) [2021-10-08 14:42:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4163 transitions. [2021-10-08 14:42:53,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:53,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:53,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:53,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-10-08 14:42:53,200 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)] === [2021-10-08 14:42:53,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:53,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1745962853, now seen corresponding path program 241 times [2021-10-08 14:42:53,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:53,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292231298] [2021-10-08 14:42:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:53,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:53,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:53,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292231298] [2021-10-08 14:42:53,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292231298] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:53,311 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:53,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:53,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515354968] [2021-10-08 14:42:53,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:53,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:53,313 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) [2021-10-08 14:42:53,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:53,832 INFO L93 Difference]: Finished difference Result 1486 states and 4323 transitions. [2021-10-08 14:42:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 14:42:53,832 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 [2021-10-08 14:42:53,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:53,835 INFO L225 Difference]: With dead ends: 1486 [2021-10-08 14:42:53,835 INFO L226 Difference]: Without dead ends: 1466 [2021-10-08 14:42:53,836 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 207.2ms TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:53,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-08 14:42:53,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1412. [2021-10-08 14:42:53,854 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) [2021-10-08 14:42:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4177 transitions. [2021-10-08 14:42:53,857 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4177 transitions. Word has length 38 [2021-10-08 14:42:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:53,857 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4177 transitions. [2021-10-08 14:42:53,858 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) [2021-10-08 14:42:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4177 transitions. [2021-10-08 14:42:53,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:53,860 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:53,860 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:53,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-10-08 14:42:53,860 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)] === [2021-10-08 14:42:53,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 41985487, now seen corresponding path program 242 times [2021-10-08 14:42:53,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:53,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691464475] [2021-10-08 14:42:53,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:53,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:53,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:53,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691464475] [2021-10-08 14:42:53,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691464475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:53,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:53,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:53,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699881553] [2021-10-08 14:42:53,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:53,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:53,987 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) [2021-10-08 14:42:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:54,455 INFO L93 Difference]: Finished difference Result 1468 states and 4285 transitions. [2021-10-08 14:42:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 14:42:54,456 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 [2021-10-08 14:42:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:54,459 INFO L225 Difference]: With dead ends: 1468 [2021-10-08 14:42:54,459 INFO L226 Difference]: Without dead ends: 1450 [2021-10-08 14:42:54,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 193.3ms TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:42:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2021-10-08 14:42:54,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1412. [2021-10-08 14:42:54,478 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) [2021-10-08 14:42:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4177 transitions. [2021-10-08 14:42:54,481 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4177 transitions. Word has length 38 [2021-10-08 14:42:54,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:54,481 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4177 transitions. [2021-10-08 14:42:54,481 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) [2021-10-08 14:42:54,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4177 transitions. [2021-10-08 14:42:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:54,484 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:54,484 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] [2021-10-08 14:42:54,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-10-08 14:42:54,484 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)] === [2021-10-08 14:42:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:54,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1525850815, now seen corresponding path program 243 times [2021-10-08 14:42:54,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:54,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83396976] [2021-10-08 14:42:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:54,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:54,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:54,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83396976] [2021-10-08 14:42:54,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83396976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:54,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:54,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:54,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346707902] [2021-10-08 14:42:54,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:54,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:54,602 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) [2021-10-08 14:42:55,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:55,055 INFO L93 Difference]: Finished difference Result 1462 states and 4270 transitions. [2021-10-08 14:42:55,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 14:42:55,055 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 [2021-10-08 14:42:55,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:55,058 INFO L225 Difference]: With dead ends: 1462 [2021-10-08 14:42:55,058 INFO L226 Difference]: Without dead ends: 1440 [2021-10-08 14:42:55,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 203.2ms TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:42:55,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2021-10-08 14:42:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1406. [2021-10-08 14:42:55,077 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) [2021-10-08 14:42:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4166 transitions. [2021-10-08 14:42:55,081 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4166 transitions. Word has length 38 [2021-10-08 14:42:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:55,081 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 4166 transitions. [2021-10-08 14:42:55,081 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) [2021-10-08 14:42:55,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4166 transitions. [2021-10-08 14:42:55,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:55,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:55,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:55,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-10-08 14:42:55,084 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)] === [2021-10-08 14:42:55,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:55,084 INFO L82 PathProgramCache]: Analyzing trace with hash -364980843, now seen corresponding path program 244 times [2021-10-08 14:42:55,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:55,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581579951] [2021-10-08 14:42:55,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:55,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:55,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:55,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581579951] [2021-10-08 14:42:55,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581579951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:55,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:55,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:42:55,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025835969] [2021-10-08 14:42:55,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:42:55,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:42:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:42:55,201 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) [2021-10-08 14:42:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:55,751 INFO L93 Difference]: Finished difference Result 1468 states and 4286 transitions. [2021-10-08 14:42:55,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 14:42:55,751 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 [2021-10-08 14:42:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:55,755 INFO L225 Difference]: With dead ends: 1468 [2021-10-08 14:42:55,755 INFO L226 Difference]: Without dead ends: 1438 [2021-10-08 14:42:55,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 248.0ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-10-08 14:42:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2021-10-08 14:42:55,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1398. [2021-10-08 14:42:55,773 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) [2021-10-08 14:42:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4148 transitions. [2021-10-08 14:42:55,776 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4148 transitions. Word has length 38 [2021-10-08 14:42:55,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:55,777 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4148 transitions. [2021-10-08 14:42:55,777 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) [2021-10-08 14:42:55,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4148 transitions. [2021-10-08 14:42:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:55,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:55,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:55,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-10-08 14:42:55,779 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)] === [2021-10-08 14:42:55,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:55,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1300139515, now seen corresponding path program 245 times [2021-10-08 14:42:55,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:55,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506385877] [2021-10-08 14:42:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:55,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:55,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:55,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506385877] [2021-10-08 14:42:55,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506385877] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:55,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:55,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:55,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927960190] [2021-10-08 14:42:55,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:55,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:55,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:55,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:55,877 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) [2021-10-08 14:42:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:56,225 INFO L93 Difference]: Finished difference Result 1508 states and 4377 transitions. [2021-10-08 14:42:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:42:56,226 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 [2021-10-08 14:42:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:56,229 INFO L225 Difference]: With dead ends: 1508 [2021-10-08 14:42:56,229 INFO L226 Difference]: Without dead ends: 1500 [2021-10-08 14:42:56,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 149.0ms TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:42:56,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-10-08 14:42:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1412. [2021-10-08 14:42:56,246 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) [2021-10-08 14:42:56,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4189 transitions. [2021-10-08 14:42:56,249 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4189 transitions. Word has length 38 [2021-10-08 14:42:56,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:56,249 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4189 transitions. [2021-10-08 14:42:56,249 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) [2021-10-08 14:42:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4189 transitions. [2021-10-08 14:42:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:56,251 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:56,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:56,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-10-08 14:42:56,252 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)] === [2021-10-08 14:42:56,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 305825895, now seen corresponding path program 246 times [2021-10-08 14:42:56,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:56,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664796548] [2021-10-08 14:42:56,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:56,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:56,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:56,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:56,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664796548] [2021-10-08 14:42:56,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664796548] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:56,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:56,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:56,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508586149] [2021-10-08 14:42:56,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:56,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:56,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:56,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:56,348 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) [2021-10-08 14:42:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:56,676 INFO L93 Difference]: Finished difference Result 1484 states and 4323 transitions. [2021-10-08 14:42:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:56,677 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 [2021-10-08 14:42:56,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:56,679 INFO L225 Difference]: With dead ends: 1484 [2021-10-08 14:42:56,679 INFO L226 Difference]: Without dead ends: 1466 [2021-10-08 14:42:56,680 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:42:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-10-08 14:42:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1406. [2021-10-08 14:42:56,695 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) [2021-10-08 14:42:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 4170 transitions. [2021-10-08 14:42:56,698 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 4170 transitions. Word has length 38 [2021-10-08 14:42:56,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:56,698 INFO L470 AbstractCegarLoop]: Abstraction has 1406 states and 4170 transitions. [2021-10-08 14:42:56,699 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) [2021-10-08 14:42:56,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 4170 transitions. [2021-10-08 14:42:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:56,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:56,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:56,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-10-08 14:42:56,701 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)] === [2021-10-08 14:42:56,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:56,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1341836385, now seen corresponding path program 247 times [2021-10-08 14:42:56,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:56,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814498382] [2021-10-08 14:42:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:56,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:56,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:56,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814498382] [2021-10-08 14:42:56,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814498382] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:56,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:56,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:56,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891382109] [2021-10-08 14:42:56,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:56,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:56,803 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) [2021-10-08 14:42:57,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:57,164 INFO L93 Difference]: Finished difference Result 1494 states and 4344 transitions. [2021-10-08 14:42:57,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:57,165 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 [2021-10-08 14:42:57,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:57,168 INFO L225 Difference]: With dead ends: 1494 [2021-10-08 14:42:57,168 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 14:42:57,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 163.7ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:57,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 14:42:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1408. [2021-10-08 14:42:57,185 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) [2021-10-08 14:42:57,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4173 transitions. [2021-10-08 14:42:57,188 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4173 transitions. Word has length 38 [2021-10-08 14:42:57,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:57,188 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4173 transitions. [2021-10-08 14:42:57,188 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) [2021-10-08 14:42:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4173 transitions. [2021-10-08 14:42:57,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:57,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:57,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:57,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-10-08 14:42:57,191 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)] === [2021-10-08 14:42:57,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:57,191 INFO L82 PathProgramCache]: Analyzing trace with hash -219420939, now seen corresponding path program 248 times [2021-10-08 14:42:57,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:57,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012673596] [2021-10-08 14:42:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:57,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:57,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:57,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012673596] [2021-10-08 14:42:57,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012673596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:57,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:57,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:57,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771783388] [2021-10-08 14:42:57,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:57,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:57,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:57,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:57,287 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) [2021-10-08 14:42:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:57,702 INFO L93 Difference]: Finished difference Result 1500 states and 4355 transitions. [2021-10-08 14:42:57,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:42:57,703 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 [2021-10-08 14:42:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:57,705 INFO L225 Difference]: With dead ends: 1500 [2021-10-08 14:42:57,706 INFO L226 Difference]: Without dead ends: 1482 [2021-10-08 14:42:57,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 181.0ms TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:42:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-10-08 14:42:57,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1412. [2021-10-08 14:42:57,723 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) [2021-10-08 14:42:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 4181 transitions. [2021-10-08 14:42:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 4181 transitions. Word has length 38 [2021-10-08 14:42:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:57,727 INFO L470 AbstractCegarLoop]: Abstraction has 1412 states and 4181 transitions. [2021-10-08 14:42:57,727 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) [2021-10-08 14:42:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 4181 transitions. [2021-10-08 14:42:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:57,729 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:57,729 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] [2021-10-08 14:42:57,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-10-08 14:42:57,729 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)] === [2021-10-08 14:42:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:57,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1199866143, now seen corresponding path program 249 times [2021-10-08 14:42:57,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:57,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617967991] [2021-10-08 14:42:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:57,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:57,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:57,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:57,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617967991] [2021-10-08 14:42:57,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617967991] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:57,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:57,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:57,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397448054] [2021-10-08 14:42:57,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:57,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:57,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:57,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:57,816 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) [2021-10-08 14:42:58,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:58,206 INFO L93 Difference]: Finished difference Result 1518 states and 4387 transitions. [2021-10-08 14:42:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:58,207 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 [2021-10-08 14:42:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:58,210 INFO L225 Difference]: With dead ends: 1518 [2021-10-08 14:42:58,210 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 14:42:58,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 149.3ms TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:42:58,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 14:42:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1400. [2021-10-08 14:42:58,227 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) [2021-10-08 14:42:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4153 transitions. [2021-10-08 14:42:58,230 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4153 transitions. Word has length 38 [2021-10-08 14:42:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:58,230 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4153 transitions. [2021-10-08 14:42:58,230 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) [2021-10-08 14:42:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4153 transitions. [2021-10-08 14:42:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:58,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:58,233 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:58,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-10-08 14:42:58,233 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)] === [2021-10-08 14:42:58,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:58,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1392885945, now seen corresponding path program 250 times [2021-10-08 14:42:58,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:58,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210944460] [2021-10-08 14:42:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:58,234 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:58,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:58,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210944460] [2021-10-08 14:42:58,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210944460] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:58,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:58,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:42:58,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429478218] [2021-10-08 14:42:58,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:42:58,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:42:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:42:58,309 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) [2021-10-08 14:42:58,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:58,615 INFO L93 Difference]: Finished difference Result 1500 states and 4359 transitions. [2021-10-08 14:42:58,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:58,616 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 [2021-10-08 14:42:58,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:58,619 INFO L225 Difference]: With dead ends: 1500 [2021-10-08 14:42:58,619 INFO L226 Difference]: Without dead ends: 1492 [2021-10-08 14:42:58,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 130.2ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-10-08 14:42:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1402. [2021-10-08 14:42:58,636 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) [2021-10-08 14:42:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4158 transitions. [2021-10-08 14:42:58,639 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4158 transitions. Word has length 38 [2021-10-08 14:42:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:58,639 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4158 transitions. [2021-10-08 14:42:58,639 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) [2021-10-08 14:42:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4158 transitions. [2021-10-08 14:42:58,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:58,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:58,641 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:58,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-10-08 14:42:58,642 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)] === [2021-10-08 14:42:58,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:58,642 INFO L82 PathProgramCache]: Analyzing trace with hash 285394379, now seen corresponding path program 251 times [2021-10-08 14:42:58,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:58,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874093711] [2021-10-08 14:42:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:58,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:58,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:58,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:58,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874093711] [2021-10-08 14:42:58,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874093711] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:58,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:58,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:58,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337028649] [2021-10-08 14:42:58,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:58,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:58,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:58,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:58,747 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) [2021-10-08 14:42:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:59,134 INFO L93 Difference]: Finished difference Result 1498 states and 4352 transitions. [2021-10-08 14:42:59,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:42:59,134 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 [2021-10-08 14:42:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:59,137 INFO L225 Difference]: With dead ends: 1498 [2021-10-08 14:42:59,137 INFO L226 Difference]: Without dead ends: 1490 [2021-10-08 14:42:59,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 178.1ms TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:42:59,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-10-08 14:42:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1408. [2021-10-08 14:42:59,154 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) [2021-10-08 14:42:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4171 transitions. [2021-10-08 14:42:59,157 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4171 transitions. Word has length 38 [2021-10-08 14:42:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:59,157 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4171 transitions. [2021-10-08 14:42:59,157 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) [2021-10-08 14:42:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4171 transitions. [2021-10-08 14:42:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:59,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:59,160 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] [2021-10-08 14:42:59,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2021-10-08 14:42:59,160 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)] === [2021-10-08 14:42:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:59,161 INFO L82 PathProgramCache]: Analyzing trace with hash -708919241, now seen corresponding path program 252 times [2021-10-08 14:42:59,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:59,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410792922] [2021-10-08 14:42:59,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:59,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:59,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:59,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:59,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410792922] [2021-10-08 14:42:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410792922] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:59,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:59,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:42:59,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686548537] [2021-10-08 14:42:59,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:42:59,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:59,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:42:59,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:42:59,256 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) [2021-10-08 14:42:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:42:59,573 INFO L93 Difference]: Finished difference Result 1440 states and 4227 transitions. [2021-10-08 14:42:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:42:59,573 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 [2021-10-08 14:42:59,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:42:59,576 INFO L225 Difference]: With dead ends: 1440 [2021-10-08 14:42:59,576 INFO L226 Difference]: Without dead ends: 1422 [2021-10-08 14:42:59,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 135.0ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:42:59,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-10-08 14:42:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1402. [2021-10-08 14:42:59,594 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) [2021-10-08 14:42:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4156 transitions. [2021-10-08 14:42:59,597 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4156 transitions. Word has length 38 [2021-10-08 14:42:59,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:42:59,597 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4156 transitions. [2021-10-08 14:42:59,597 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) [2021-10-08 14:42:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4156 transitions. [2021-10-08 14:42:59,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:42:59,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:42:59,599 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:42:59,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2021-10-08 14:42:59,599 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)] === [2021-10-08 14:42:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:42:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash 871457695, now seen corresponding path program 253 times [2021-10-08 14:42:59,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:42:59,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266936441] [2021-10-08 14:42:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:42:59,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:42:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:42:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:42:59,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:42:59,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266936441] [2021-10-08 14:42:59,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266936441] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:42:59,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:42:59,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:42:59,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924825908] [2021-10-08 14:42:59,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:42:59,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:42:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:42:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:42:59,727 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) [2021-10-08 14:43:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:00,097 INFO L93 Difference]: Finished difference Result 1436 states and 4215 transitions. [2021-10-08 14:43:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:00,098 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 [2021-10-08 14:43:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:00,101 INFO L225 Difference]: With dead ends: 1436 [2021-10-08 14:43:00,101 INFO L226 Difference]: Without dead ends: 1420 [2021-10-08 14:43:00,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 182.2ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:00,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-08 14:43:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1400. [2021-10-08 14:43:00,118 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) [2021-10-08 14:43:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4151 transitions. [2021-10-08 14:43:00,121 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4151 transitions. Word has length 38 [2021-10-08 14:43:00,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:00,121 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4151 transitions. [2021-10-08 14:43:00,121 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) [2021-10-08 14:43:00,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4151 transitions. [2021-10-08 14:43:00,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:00,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:00,124 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] [2021-10-08 14:43:00,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2021-10-08 14:43:00,124 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)] === [2021-10-08 14:43:00,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:00,125 INFO L82 PathProgramCache]: Analyzing trace with hash -254480955, now seen corresponding path program 254 times [2021-10-08 14:43:00,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:00,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110228857] [2021-10-08 14:43:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:00,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:00,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:00,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:00,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110228857] [2021-10-08 14:43:00,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110228857] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:00,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:00,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:00,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150292484] [2021-10-08 14:43:00,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:00,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:00,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:00,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:00,231 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) [2021-10-08 14:43:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:00,663 INFO L93 Difference]: Finished difference Result 1482 states and 4311 transitions. [2021-10-08 14:43:00,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:43:00,664 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 [2021-10-08 14:43:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:00,667 INFO L225 Difference]: With dead ends: 1482 [2021-10-08 14:43:00,667 INFO L226 Difference]: Without dead ends: 1462 [2021-10-08 14:43:00,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 180.1ms TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:43:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-10-08 14:43:00,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1408. [2021-10-08 14:43:00,686 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) [2021-10-08 14:43:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4165 transitions. [2021-10-08 14:43:00,689 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4165 transitions. Word has length 38 [2021-10-08 14:43:00,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:00,689 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4165 transitions. [2021-10-08 14:43:00,689 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) [2021-10-08 14:43:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4165 transitions. [2021-10-08 14:43:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:00,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:00,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:00,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2021-10-08 14:43:00,693 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)] === [2021-10-08 14:43:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:00,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1958458321, now seen corresponding path program 255 times [2021-10-08 14:43:00,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:00,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17708763] [2021-10-08 14:43:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:00,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:00,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:00,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17708763] [2021-10-08 14:43:00,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17708763] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:00,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:00,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:00,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792912116] [2021-10-08 14:43:00,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:00,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:00,809 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) [2021-10-08 14:43:01,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:01,169 INFO L93 Difference]: Finished difference Result 1464 states and 4273 transitions. [2021-10-08 14:43:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:01,170 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 [2021-10-08 14:43:01,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:01,174 INFO L225 Difference]: With dead ends: 1464 [2021-10-08 14:43:01,175 INFO L226 Difference]: Without dead ends: 1446 [2021-10-08 14:43:01,175 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 162.6ms TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-08 14:43:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1408. [2021-10-08 14:43:01,199 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) [2021-10-08 14:43:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1408 states to 1408 states and 4165 transitions. [2021-10-08 14:43:01,202 INFO L78 Accepts]: Start accepts. Automaton has 1408 states and 4165 transitions. Word has length 38 [2021-10-08 14:43:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:01,203 INFO L470 AbstractCegarLoop]: Abstraction has 1408 states and 4165 transitions. [2021-10-08 14:43:01,203 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) [2021-10-08 14:43:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1408 states and 4165 transitions. [2021-10-08 14:43:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:01,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:01,206 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] [2021-10-08 14:43:01,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2021-10-08 14:43:01,206 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)] === [2021-10-08 14:43:01,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:01,206 INFO L82 PathProgramCache]: Analyzing trace with hash 768672673, now seen corresponding path program 256 times [2021-10-08 14:43:01,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:01,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608987805] [2021-10-08 14:43:01,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:01,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:01,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:01,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:01,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608987805] [2021-10-08 14:43:01,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608987805] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:01,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:01,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:01,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383834633] [2021-10-08 14:43:01,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:01,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:01,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:01,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:01,326 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) [2021-10-08 14:43:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:01,742 INFO L93 Difference]: Finished difference Result 1458 states and 4258 transitions. [2021-10-08 14:43:01,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:01,742 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 [2021-10-08 14:43:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:01,745 INFO L225 Difference]: With dead ends: 1458 [2021-10-08 14:43:01,745 INFO L226 Difference]: Without dead ends: 1436 [2021-10-08 14:43:01,746 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:43:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-08 14:43:01,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1402. [2021-10-08 14:43:01,765 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) [2021-10-08 14:43:01,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 4154 transitions. [2021-10-08 14:43:01,768 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 4154 transitions. Word has length 38 [2021-10-08 14:43:01,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:01,768 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 4154 transitions. [2021-10-08 14:43:01,768 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) [2021-10-08 14:43:01,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 4154 transitions. [2021-10-08 14:43:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:01,770 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:01,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:01,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2021-10-08 14:43:01,771 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)] === [2021-10-08 14:43:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1929542645, now seen corresponding path program 257 times [2021-10-08 14:43:01,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:01,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537690895] [2021-10-08 14:43:01,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:01,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:01,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:01,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537690895] [2021-10-08 14:43:01,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537690895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:01,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:01,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:01,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893735580] [2021-10-08 14:43:01,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:01,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:01,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:01,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:01,904 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) [2021-10-08 14:43:02,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:02,350 INFO L93 Difference]: Finished difference Result 1464 states and 4274 transitions. [2021-10-08 14:43:02,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:43:02,350 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 [2021-10-08 14:43:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:02,354 INFO L225 Difference]: With dead ends: 1464 [2021-10-08 14:43:02,354 INFO L226 Difference]: Without dead ends: 1432 [2021-10-08 14:43:02,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 212.7ms TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:43:02,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2021-10-08 14:43:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1392. [2021-10-08 14:43:02,374 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) [2021-10-08 14:43:02,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4133 transitions. [2021-10-08 14:43:02,377 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4133 transitions. Word has length 38 [2021-10-08 14:43:02,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:02,378 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 4133 transitions. [2021-10-08 14:43:02,378 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) [2021-10-08 14:43:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4133 transitions. [2021-10-08 14:43:02,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:02,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:02,380 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:02,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2021-10-08 14:43:02,380 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)] === [2021-10-08 14:43:02,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1033642789, now seen corresponding path program 258 times [2021-10-08 14:43:02,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:02,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440753599] [2021-10-08 14:43:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:02,381 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:02,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:02,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440753599] [2021-10-08 14:43:02,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440753599] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:02,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:02,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:02,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999348252] [2021-10-08 14:43:02,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:02,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:02,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:02,471 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) [2021-10-08 14:43:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:02,773 INFO L93 Difference]: Finished difference Result 1526 states and 4404 transitions. [2021-10-08 14:43:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:02,773 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 [2021-10-08 14:43:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:02,777 INFO L225 Difference]: With dead ends: 1526 [2021-10-08 14:43:02,777 INFO L226 Difference]: Without dead ends: 1518 [2021-10-08 14:43:02,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:02,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-10-08 14:43:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1400. [2021-10-08 14:43:02,796 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) [2021-10-08 14:43:02,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4157 transitions. [2021-10-08 14:43:02,799 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4157 transitions. Word has length 38 [2021-10-08 14:43:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:02,799 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4157 transitions. [2021-10-08 14:43:02,799 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) [2021-10-08 14:43:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4157 transitions. [2021-10-08 14:43:02,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:02,802 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:02,802 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:02,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2021-10-08 14:43:02,802 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)] === [2021-10-08 14:43:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:02,802 INFO L82 PathProgramCache]: Analyzing trace with hash -770456959, now seen corresponding path program 259 times [2021-10-08 14:43:02,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:02,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226886229] [2021-10-08 14:43:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:02,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:02,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:02,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226886229] [2021-10-08 14:43:02,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226886229] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:02,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:02,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:02,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658525917] [2021-10-08 14:43:02,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:02,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:02,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:02,919 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) [2021-10-08 14:43:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:03,269 INFO L93 Difference]: Finished difference Result 1516 states and 4385 transitions. [2021-10-08 14:43:03,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:03,269 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 [2021-10-08 14:43:03,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:03,272 INFO L225 Difference]: With dead ends: 1516 [2021-10-08 14:43:03,272 INFO L226 Difference]: Without dead ends: 1498 [2021-10-08 14:43:03,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 146.1ms TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2021-10-08 14:43:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1398. [2021-10-08 14:43:03,291 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) [2021-10-08 14:43:03,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4152 transitions. [2021-10-08 14:43:03,295 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4152 transitions. Word has length 38 [2021-10-08 14:43:03,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:03,295 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4152 transitions. [2021-10-08 14:43:03,295 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) [2021-10-08 14:43:03,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4152 transitions. [2021-10-08 14:43:03,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:03,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:03,298 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] [2021-10-08 14:43:03,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2021-10-08 14:43:03,298 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)] === [2021-10-08 14:43:03,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash 894866779, now seen corresponding path program 260 times [2021-10-08 14:43:03,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:03,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656191315] [2021-10-08 14:43:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:03,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:03,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:03,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656191315] [2021-10-08 14:43:03,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656191315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:03,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:03,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:03,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676773401] [2021-10-08 14:43:03,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:03,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:03,391 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) [2021-10-08 14:43:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:03,767 INFO L93 Difference]: Finished difference Result 1520 states and 4387 transitions. [2021-10-08 14:43:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:03,768 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 [2021-10-08 14:43:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:03,771 INFO L225 Difference]: With dead ends: 1520 [2021-10-08 14:43:03,771 INFO L226 Difference]: Without dead ends: 1512 [2021-10-08 14:43:03,771 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 137.9ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-10-08 14:43:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1404. [2021-10-08 14:43:03,789 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) [2021-10-08 14:43:03,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4165 transitions. [2021-10-08 14:43:03,792 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4165 transitions. Word has length 38 [2021-10-08 14:43:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4165 transitions. [2021-10-08 14:43:03,793 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) [2021-10-08 14:43:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4165 transitions. [2021-10-08 14:43:03,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:03,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:03,795 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:03,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2021-10-08 14:43:03,795 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)] === [2021-10-08 14:43:03,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1467898943, now seen corresponding path program 261 times [2021-10-08 14:43:03,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:03,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880452361] [2021-10-08 14:43:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:03,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:03,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:03,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880452361] [2021-10-08 14:43:03,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880452361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:03,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:03,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:03,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153694749] [2021-10-08 14:43:03,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:03,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:03,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:03,882 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) [2021-10-08 14:43:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:04,185 INFO L93 Difference]: Finished difference Result 1504 states and 4345 transitions. [2021-10-08 14:43:04,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:04,185 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 [2021-10-08 14:43:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:04,188 INFO L225 Difference]: With dead ends: 1504 [2021-10-08 14:43:04,189 INFO L226 Difference]: Without dead ends: 1486 [2021-10-08 14:43:04,189 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 [2021-10-08 14:43:04,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-10-08 14:43:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1398. [2021-10-08 14:43:04,206 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) [2021-10-08 14:43:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4146 transitions. [2021-10-08 14:43:04,209 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4146 transitions. Word has length 38 [2021-10-08 14:43:04,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:04,210 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4146 transitions. [2021-10-08 14:43:04,210 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) [2021-10-08 14:43:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4146 transitions. [2021-10-08 14:43:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:04,212 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:04,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:04,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2021-10-08 14:43:04,212 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)] === [2021-10-08 14:43:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:04,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1001750309, now seen corresponding path program 262 times [2021-10-08 14:43:04,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:04,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036035209] [2021-10-08 14:43:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:04,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:04,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:04,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:04,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036035209] [2021-10-08 14:43:04,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036035209] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:04,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:04,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:04,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269794104] [2021-10-08 14:43:04,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:04,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:04,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:04,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:04,308 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) [2021-10-08 14:43:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:04,693 INFO L93 Difference]: Finished difference Result 1512 states and 4367 transitions. [2021-10-08 14:43:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:04,693 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 [2021-10-08 14:43:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:04,696 INFO L225 Difference]: With dead ends: 1512 [2021-10-08 14:43:04,696 INFO L226 Difference]: Without dead ends: 1496 [2021-10-08 14:43:04,696 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 150.4ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-08 14:43:04,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1404. [2021-10-08 14:43:04,714 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) [2021-10-08 14:43:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4159 transitions. [2021-10-08 14:43:04,717 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4159 transitions. Word has length 38 [2021-10-08 14:43:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:04,717 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4159 transitions. [2021-10-08 14:43:04,718 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) [2021-10-08 14:43:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4159 transitions. [2021-10-08 14:43:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:04,720 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:04,720 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:04,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2021-10-08 14:43:04,720 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)] === [2021-10-08 14:43:04,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:04,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1560416283, now seen corresponding path program 263 times [2021-10-08 14:43:04,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:04,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753546281] [2021-10-08 14:43:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:04,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:04,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:04,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753546281] [2021-10-08 14:43:04,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753546281] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:04,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:04,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:04,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103721829] [2021-10-08 14:43:04,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:04,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:04,810 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) [2021-10-08 14:43:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:05,212 INFO L93 Difference]: Finished difference Result 1528 states and 4398 transitions. [2021-10-08 14:43:05,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:05,212 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 [2021-10-08 14:43:05,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:05,216 INFO L225 Difference]: With dead ends: 1528 [2021-10-08 14:43:05,216 INFO L226 Difference]: Without dead ends: 1496 [2021-10-08 14:43:05,216 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:05,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-10-08 14:43:05,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1392. [2021-10-08 14:43:05,235 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) [2021-10-08 14:43:05,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 4131 transitions. [2021-10-08 14:43:05,238 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 4131 transitions. Word has length 38 [2021-10-08 14:43:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:05,238 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 4131 transitions. [2021-10-08 14:43:05,239 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) [2021-10-08 14:43:05,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 4131 transitions. [2021-10-08 14:43:05,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:05,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:05,241 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:05,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2021-10-08 14:43:05,241 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)] === [2021-10-08 14:43:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 994984833, now seen corresponding path program 264 times [2021-10-08 14:43:05,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:05,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644681589] [2021-10-08 14:43:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:05,242 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:05,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:05,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644681589] [2021-10-08 14:43:05,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644681589] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:05,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:05,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:05,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332810086] [2021-10-08 14:43:05,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:05,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:05,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:05,344 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) [2021-10-08 14:43:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:05,726 INFO L93 Difference]: Finished difference Result 1502 states and 4336 transitions. [2021-10-08 14:43:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:05,727 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 [2021-10-08 14:43:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:05,730 INFO L225 Difference]: With dead ends: 1502 [2021-10-08 14:43:05,730 INFO L226 Difference]: Without dead ends: 1494 [2021-10-08 14:43:05,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 139.6ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:05,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-10-08 14:43:05,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1404. [2021-10-08 14:43:05,748 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) [2021-10-08 14:43:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4165 transitions. [2021-10-08 14:43:05,752 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4165 transitions. Word has length 38 [2021-10-08 14:43:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:05,752 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4165 transitions. [2021-10-08 14:43:05,752 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) [2021-10-08 14:43:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4165 transitions. [2021-10-08 14:43:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:05,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:05,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:05,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2021-10-08 14:43:05,755 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)] === [2021-10-08 14:43:05,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 671213, now seen corresponding path program 265 times [2021-10-08 14:43:05,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:05,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599445783] [2021-10-08 14:43:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:05,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:05,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:05,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599445783] [2021-10-08 14:43:05,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599445783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:05,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:05,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829287587] [2021-10-08 14:43:05,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:05,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:05,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:05,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:05,859 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) [2021-10-08 14:43:06,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:06,181 INFO L93 Difference]: Finished difference Result 1478 states and 4282 transitions. [2021-10-08 14:43:06,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:06,181 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 [2021-10-08 14:43:06,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:06,185 INFO L225 Difference]: With dead ends: 1478 [2021-10-08 14:43:06,185 INFO L226 Difference]: Without dead ends: 1460 [2021-10-08 14:43:06,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:43:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-10-08 14:43:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1398. [2021-10-08 14:43:06,208 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) [2021-10-08 14:43:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4146 transitions. [2021-10-08 14:43:06,212 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4146 transitions. Word has length 38 [2021-10-08 14:43:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:06,212 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4146 transitions. [2021-10-08 14:43:06,212 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) [2021-10-08 14:43:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4146 transitions. [2021-10-08 14:43:06,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:06,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:06,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:06,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2021-10-08 14:43:06,215 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)] === [2021-10-08 14:43:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:06,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1646991067, now seen corresponding path program 266 times [2021-10-08 14:43:06,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:06,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883067648] [2021-10-08 14:43:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:06,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:06,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:06,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883067648] [2021-10-08 14:43:06,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883067648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:06,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:06,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:06,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150004726] [2021-10-08 14:43:06,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:06,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:06,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:06,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:06,330 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) [2021-10-08 14:43:06,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:06,641 INFO L93 Difference]: Finished difference Result 1510 states and 4352 transitions. [2021-10-08 14:43:06,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:06,641 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 [2021-10-08 14:43:06,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:06,644 INFO L225 Difference]: With dead ends: 1510 [2021-10-08 14:43:06,644 INFO L226 Difference]: Without dead ends: 1502 [2021-10-08 14:43:06,645 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 134.6ms TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-10-08 14:43:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1400. [2021-10-08 14:43:06,662 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) [2021-10-08 14:43:06,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 4149 transitions. [2021-10-08 14:43:06,665 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 4149 transitions. Word has length 38 [2021-10-08 14:43:06,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:06,666 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 4149 transitions. [2021-10-08 14:43:06,666 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) [2021-10-08 14:43:06,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 4149 transitions. [2021-10-08 14:43:06,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:06,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:06,668 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] [2021-10-08 14:43:06,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2021-10-08 14:43:06,668 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)] === [2021-10-08 14:43:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:06,669 INFO L82 PathProgramCache]: Analyzing trace with hash -524575621, now seen corresponding path program 267 times [2021-10-08 14:43:06,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:06,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962833144] [2021-10-08 14:43:06,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:06,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:06,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:06,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:06,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962833144] [2021-10-08 14:43:06,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962833144] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:06,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:06,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:06,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084523759] [2021-10-08 14:43:06,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:06,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:06,764 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) [2021-10-08 14:43:07,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:07,089 INFO L93 Difference]: Finished difference Result 1500 states and 4333 transitions. [2021-10-08 14:43:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:07,089 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 [2021-10-08 14:43:07,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:07,092 INFO L225 Difference]: With dead ends: 1500 [2021-10-08 14:43:07,092 INFO L226 Difference]: Without dead ends: 1482 [2021-10-08 14:43:07,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2021-10-08 14:43:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1398. [2021-10-08 14:43:07,109 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) [2021-10-08 14:43:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4144 transitions. [2021-10-08 14:43:07,112 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4144 transitions. Word has length 38 [2021-10-08 14:43:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:07,113 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 4144 transitions. [2021-10-08 14:43:07,113 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) [2021-10-08 14:43:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4144 transitions. [2021-10-08 14:43:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:07,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:07,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:07,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2021-10-08 14:43:07,115 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)] === [2021-10-08 14:43:07,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:07,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1283526769, now seen corresponding path program 268 times [2021-10-08 14:43:07,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:07,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158171186] [2021-10-08 14:43:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:07,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:07,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:07,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158171186] [2021-10-08 14:43:07,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158171186] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:07,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:07,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:07,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804144161] [2021-10-08 14:43:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:07,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:07,211 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) [2021-10-08 14:43:07,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:07,588 INFO L93 Difference]: Finished difference Result 1488 states and 4303 transitions. [2021-10-08 14:43:07,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:07,588 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 [2021-10-08 14:43:07,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:07,592 INFO L225 Difference]: With dead ends: 1488 [2021-10-08 14:43:07,592 INFO L226 Difference]: Without dead ends: 1472 [2021-10-08 14:43:07,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:07,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1472 states. [2021-10-08 14:43:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1472 to 1404. [2021-10-08 14:43:07,609 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) [2021-10-08 14:43:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 4157 transitions. [2021-10-08 14:43:07,612 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 4157 transitions. Word has length 38 [2021-10-08 14:43:07,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:07,612 INFO L470 AbstractCegarLoop]: Abstraction has 1404 states and 4157 transitions. [2021-10-08 14:43:07,613 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) [2021-10-08 14:43:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 4157 transitions. [2021-10-08 14:43:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:07,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:07,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:07,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2021-10-08 14:43:07,615 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)] === [2021-10-08 14:43:07,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:07,615 INFO L82 PathProgramCache]: Analyzing trace with hash 894711461, now seen corresponding path program 269 times [2021-10-08 14:43:07,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:07,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286983168] [2021-10-08 14:43:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:07,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:07,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:07,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286983168] [2021-10-08 14:43:07,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286983168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:07,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:07,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:07,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868522293] [2021-10-08 14:43:07,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:07,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:07,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:07,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:07,711 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) [2021-10-08 14:43:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:08,104 INFO L93 Difference]: Finished difference Result 1504 states and 4334 transitions. [2021-10-08 14:43:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:08,105 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 [2021-10-08 14:43:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:08,107 INFO L225 Difference]: With dead ends: 1504 [2021-10-08 14:43:08,108 INFO L226 Difference]: Without dead ends: 1470 [2021-10-08 14:43:08,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 150.2ms TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-10-08 14:43:08,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1390. [2021-10-08 14:43:08,126 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) [2021-10-08 14:43:08,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4126 transitions. [2021-10-08 14:43:08,129 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4126 transitions. Word has length 38 [2021-10-08 14:43:08,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:08,129 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 4126 transitions. [2021-10-08 14:43:08,129 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) [2021-10-08 14:43:08,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4126 transitions. [2021-10-08 14:43:08,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:08,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:08,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:08,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2021-10-08 14:43:08,132 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)] === [2021-10-08 14:43:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:08,132 INFO L82 PathProgramCache]: Analyzing trace with hash -358685355, now seen corresponding path program 270 times [2021-10-08 14:43:08,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:08,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553117786] [2021-10-08 14:43:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:08,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:08,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:08,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553117786] [2021-10-08 14:43:08,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553117786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:08,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:08,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:08,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592877374] [2021-10-08 14:43:08,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:08,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:08,243 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) [2021-10-08 14:43:08,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:08,583 INFO L93 Difference]: Finished difference Result 1444 states and 4221 transitions. [2021-10-08 14:43:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:08,583 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 [2021-10-08 14:43:08,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:08,586 INFO L225 Difference]: With dead ends: 1444 [2021-10-08 14:43:08,586 INFO L226 Difference]: Without dead ends: 1436 [2021-10-08 14:43:08,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 151.3ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:08,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2021-10-08 14:43:08,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1390. [2021-10-08 14:43:08,612 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) [2021-10-08 14:43:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 4124 transitions. [2021-10-08 14:43:08,615 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 4124 transitions. Word has length 38 [2021-10-08 14:43:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:08,616 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 4124 transitions. [2021-10-08 14:43:08,616 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) [2021-10-08 14:43:08,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 4124 transitions. [2021-10-08 14:43:08,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:08,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:08,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:08,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2021-10-08 14:43:08,619 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)] === [2021-10-08 14:43:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash 2132182193, now seen corresponding path program 271 times [2021-10-08 14:43:08,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:08,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374579901] [2021-10-08 14:43:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:08,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:08,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:08,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374579901] [2021-10-08 14:43:08,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374579901] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:08,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:08,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:08,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221487151] [2021-10-08 14:43:08,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:08,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:08,737 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) [2021-10-08 14:43:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:09,126 INFO L93 Difference]: Finished difference Result 1442 states and 4220 transitions. [2021-10-08 14:43:09,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:09,127 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 [2021-10-08 14:43:09,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:09,129 INFO L225 Difference]: With dead ends: 1442 [2021-10-08 14:43:09,129 INFO L226 Difference]: Without dead ends: 1424 [2021-10-08 14:43:09,130 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 170.7ms TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:43:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-10-08 14:43:09,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1388. [2021-10-08 14:43:09,146 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) [2021-10-08 14:43:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 4119 transitions. [2021-10-08 14:43:09,149 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 4119 transitions. Word has length 38 [2021-10-08 14:43:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:09,149 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 4119 transitions. [2021-10-08 14:43:09,149 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) [2021-10-08 14:43:09,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 4119 transitions. [2021-10-08 14:43:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:09,151 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:09,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:09,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2021-10-08 14:43:09,152 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)] === [2021-10-08 14:43:09,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:09,152 INFO L82 PathProgramCache]: Analyzing trace with hash -497461365, now seen corresponding path program 272 times [2021-10-08 14:43:09,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:09,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064038069] [2021-10-08 14:43:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:09,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:09,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:09,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064038069] [2021-10-08 14:43:09,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064038069] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:09,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:09,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:09,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042865451] [2021-10-08 14:43:09,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:09,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:09,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:09,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:09,257 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) [2021-10-08 14:43:09,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:09,627 INFO L93 Difference]: Finished difference Result 1454 states and 4232 transitions. [2021-10-08 14:43:09,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:09,628 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 [2021-10-08 14:43:09,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:09,630 INFO L225 Difference]: With dead ends: 1454 [2021-10-08 14:43:09,631 INFO L226 Difference]: Without dead ends: 1446 [2021-10-08 14:43:09,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 143.6ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:09,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-10-08 14:43:09,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1386. [2021-10-08 14:43:09,649 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) [2021-10-08 14:43:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 4114 transitions. [2021-10-08 14:43:09,652 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 4114 transitions. Word has length 38 [2021-10-08 14:43:09,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:09,652 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 4114 transitions. [2021-10-08 14:43:09,652 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) [2021-10-08 14:43:09,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 4114 transitions. [2021-10-08 14:43:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:09,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:09,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:09,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2021-10-08 14:43:09,654 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)] === [2021-10-08 14:43:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:09,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1434740209, now seen corresponding path program 273 times [2021-10-08 14:43:09,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:09,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599482067] [2021-10-08 14:43:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:09,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:09,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:09,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599482067] [2021-10-08 14:43:09,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599482067] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:09,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:09,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:09,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648738236] [2021-10-08 14:43:09,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:09,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:09,747 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) [2021-10-08 14:43:10,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:10,098 INFO L93 Difference]: Finished difference Result 1438 states and 4190 transitions. [2021-10-08 14:43:10,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:10,099 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 [2021-10-08 14:43:10,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:10,101 INFO L225 Difference]: With dead ends: 1438 [2021-10-08 14:43:10,101 INFO L226 Difference]: Without dead ends: 1420 [2021-10-08 14:43:10,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 112.0ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:43:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-10-08 14:43:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1380. [2021-10-08 14:43:10,118 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) [2021-10-08 14:43:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4095 transitions. [2021-10-08 14:43:10,121 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4095 transitions. Word has length 38 [2021-10-08 14:43:10,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:10,121 INFO L470 AbstractCegarLoop]: Abstraction has 1380 states and 4095 transitions. [2021-10-08 14:43:10,121 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) [2021-10-08 14:43:10,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4095 transitions. [2021-10-08 14:43:10,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:10,123 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:10,123 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] [2021-10-08 14:43:10,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2021-10-08 14:43:10,124 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)] === [2021-10-08 14:43:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:10,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1900888843, now seen corresponding path program 274 times [2021-10-08 14:43:10,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:10,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296291585] [2021-10-08 14:43:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:10,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:10,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:10,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:10,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296291585] [2021-10-08 14:43:10,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296291585] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:10,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:10,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:10,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749256915] [2021-10-08 14:43:10,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:10,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:10,243 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) [2021-10-08 14:43:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:10,632 INFO L93 Difference]: Finished difference Result 1446 states and 4212 transitions. [2021-10-08 14:43:10,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:10,633 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 [2021-10-08 14:43:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:10,635 INFO L225 Difference]: With dead ends: 1446 [2021-10-08 14:43:10,635 INFO L226 Difference]: Without dead ends: 1430 [2021-10-08 14:43:10,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 167.5ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:10,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-08 14:43:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1378. [2021-10-08 14:43:10,652 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) [2021-10-08 14:43:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 4090 transitions. [2021-10-08 14:43:10,655 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 4090 transitions. Word has length 38 [2021-10-08 14:43:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 4090 transitions. [2021-10-08 14:43:10,655 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) [2021-10-08 14:43:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 4090 transitions. [2021-10-08 14:43:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:10,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:10,657 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] [2021-10-08 14:43:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2021-10-08 14:43:10,658 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)] === [2021-10-08 14:43:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:10,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1342222869, now seen corresponding path program 275 times [2021-10-08 14:43:10,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:10,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277386762] [2021-10-08 14:43:10,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:10,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:10,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:10,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277386762] [2021-10-08 14:43:10,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277386762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:10,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:10,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:10,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028608316] [2021-10-08 14:43:10,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:10,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:10,774 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) [2021-10-08 14:43:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:11,201 INFO L93 Difference]: Finished difference Result 1462 states and 4243 transitions. [2021-10-08 14:43:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:11,201 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 [2021-10-08 14:43:11,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:11,204 INFO L225 Difference]: With dead ends: 1462 [2021-10-08 14:43:11,204 INFO L226 Difference]: Without dead ends: 1430 [2021-10-08 14:43:11,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:11,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-10-08 14:43:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1366. [2021-10-08 14:43:11,221 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) [2021-10-08 14:43:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 4062 transitions. [2021-10-08 14:43:11,224 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 4062 transitions. Word has length 38 [2021-10-08 14:43:11,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:11,224 INFO L470 AbstractCegarLoop]: Abstraction has 1366 states and 4062 transitions. [2021-10-08 14:43:11,225 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) [2021-10-08 14:43:11,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 4062 transitions. [2021-10-08 14:43:11,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:11,227 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:11,227 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:11,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2021-10-08 14:43:11,227 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)] === [2021-10-08 14:43:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:11,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1583268659, now seen corresponding path program 276 times [2021-10-08 14:43:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:11,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072304883] [2021-10-08 14:43:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:11,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:11,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:11,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:11,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072304883] [2021-10-08 14:43:11,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072304883] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:11,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:11,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:11,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155894005] [2021-10-08 14:43:11,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:11,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:11,317 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) [2021-10-08 14:43:11,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:11,647 INFO L93 Difference]: Finished difference Result 1410 states and 4142 transitions. [2021-10-08 14:43:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:11,647 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 [2021-10-08 14:43:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:11,650 INFO L225 Difference]: With dead ends: 1410 [2021-10-08 14:43:11,650 INFO L226 Difference]: Without dead ends: 1402 [2021-10-08 14:43:11,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 131.0ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:43:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2021-10-08 14:43:11,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1362. [2021-10-08 14:43:11,682 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) [2021-10-08 14:43:11,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 4052 transitions. [2021-10-08 14:43:11,685 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 4052 transitions. Word has length 38 [2021-10-08 14:43:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:11,685 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 4052 transitions. [2021-10-08 14:43:11,685 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) [2021-10-08 14:43:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 4052 transitions. [2021-10-08 14:43:11,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:11,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:11,687 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:11,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2021-10-08 14:43:11,687 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)] === [2021-10-08 14:43:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:11,688 INFO L82 PathProgramCache]: Analyzing trace with hash -511440951, now seen corresponding path program 277 times [2021-10-08 14:43:11,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:11,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071418939] [2021-10-08 14:43:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:11,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:11,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:11,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071418939] [2021-10-08 14:43:11,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071418939] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:11,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:11,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:11,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720333828] [2021-10-08 14:43:11,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:11,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:11,802 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) [2021-10-08 14:43:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:12,204 INFO L93 Difference]: Finished difference Result 1408 states and 4135 transitions. [2021-10-08 14:43:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:12,204 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 [2021-10-08 14:43:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:12,207 INFO L225 Difference]: With dead ends: 1408 [2021-10-08 14:43:12,207 INFO L226 Difference]: Without dead ends: 1400 [2021-10-08 14:43:12,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 166.9ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:12,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-10-08 14:43:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1360. [2021-10-08 14:43:12,225 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) [2021-10-08 14:43:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4047 transitions. [2021-10-08 14:43:12,229 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4047 transitions. Word has length 38 [2021-10-08 14:43:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:12,229 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 4047 transitions. [2021-10-08 14:43:12,229 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) [2021-10-08 14:43:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4047 transitions. [2021-10-08 14:43:12,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:12,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:12,232 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] [2021-10-08 14:43:12,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2021-10-08 14:43:12,232 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)] === [2021-10-08 14:43:12,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:12,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1420760623, now seen corresponding path program 278 times [2021-10-08 14:43:12,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:12,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844523006] [2021-10-08 14:43:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:12,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:12,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:12,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:12,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844523006] [2021-10-08 14:43:12,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844523006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:12,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:12,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:12,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056100042] [2021-10-08 14:43:12,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:12,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:12,351 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) [2021-10-08 14:43:12,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:12,720 INFO L93 Difference]: Finished difference Result 1388 states and 4087 transitions. [2021-10-08 14:43:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:12,720 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 [2021-10-08 14:43:12,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:12,724 INFO L225 Difference]: With dead ends: 1388 [2021-10-08 14:43:12,724 INFO L226 Difference]: Without dead ends: 1370 [2021-10-08 14:43:12,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 144.1ms TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-08 14:43:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1354. [2021-10-08 14:43:12,746 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) [2021-10-08 14:43:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1354 states to 1354 states and 4032 transitions. [2021-10-08 14:43:12,750 INFO L78 Accepts]: Start accepts. Automaton has 1354 states and 4032 transitions. Word has length 38 [2021-10-08 14:43:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:12,750 INFO L470 AbstractCegarLoop]: Abstraction has 1354 states and 4032 transitions. [2021-10-08 14:43:12,750 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) [2021-10-08 14:43:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1354 states and 4032 transitions. [2021-10-08 14:43:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:12,753 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:12,753 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] [2021-10-08 14:43:12,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2021-10-08 14:43:12,754 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)] === [2021-10-08 14:43:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:12,754 INFO L82 PathProgramCache]: Analyzing trace with hash 160546261, now seen corresponding path program 279 times [2021-10-08 14:43:12,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:12,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315889282] [2021-10-08 14:43:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:12,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:12,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:12,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315889282] [2021-10-08 14:43:12,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315889282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:12,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:12,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:12,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684908493] [2021-10-08 14:43:12,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:12,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:12,880 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) [2021-10-08 14:43:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:13,203 INFO L93 Difference]: Finished difference Result 1386 states and 4078 transitions. [2021-10-08 14:43:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:13,203 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 [2021-10-08 14:43:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:13,206 INFO L225 Difference]: With dead ends: 1386 [2021-10-08 14:43:13,206 INFO L226 Difference]: Without dead ends: 1370 [2021-10-08 14:43:13,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 149.5ms TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-10-08 14:43:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1352. [2021-10-08 14:43:13,227 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) [2021-10-08 14:43:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 4027 transitions. [2021-10-08 14:43:13,231 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 4027 transitions. Word has length 38 [2021-10-08 14:43:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:13,231 INFO L470 AbstractCegarLoop]: Abstraction has 1352 states and 4027 transitions. [2021-10-08 14:43:13,231 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) [2021-10-08 14:43:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 4027 transitions. [2021-10-08 14:43:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:13,234 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:13,234 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:13,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2021-10-08 14:43:13,234 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)] === [2021-10-08 14:43:13,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:13,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1107735027, now seen corresponding path program 280 times [2021-10-08 14:43:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:13,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654519396] [2021-10-08 14:43:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:13,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:13,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:13,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654519396] [2021-10-08 14:43:13,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654519396] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:13,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:13,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:13,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596543491] [2021-10-08 14:43:13,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:13,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:13,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:13,356 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) [2021-10-08 14:43:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:13,762 INFO L93 Difference]: Finished difference Result 1372 states and 4059 transitions. [2021-10-08 14:43:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:13,762 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 [2021-10-08 14:43:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:13,766 INFO L225 Difference]: With dead ends: 1372 [2021-10-08 14:43:13,766 INFO L226 Difference]: Without dead ends: 1354 [2021-10-08 14:43:13,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 176.2ms TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:13,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2021-10-08 14:43:13,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1346. [2021-10-08 14:43:13,784 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) [2021-10-08 14:43:13,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1346 states to 1346 states and 4012 transitions. [2021-10-08 14:43:13,788 INFO L78 Accepts]: Start accepts. Automaton has 1346 states and 4012 transitions. Word has length 38 [2021-10-08 14:43:13,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:13,788 INFO L470 AbstractCegarLoop]: Abstraction has 1346 states and 4012 transitions. [2021-10-08 14:43:13,788 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) [2021-10-08 14:43:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1346 states and 4012 transitions. [2021-10-08 14:43:13,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:13,790 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:13,790 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] [2021-10-08 14:43:13,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2021-10-08 14:43:13,791 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)] === [2021-10-08 14:43:13,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1488949285, now seen corresponding path program 281 times [2021-10-08 14:43:13,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:13,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765358869] [2021-10-08 14:43:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:13,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:13,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:13,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765358869] [2021-10-08 14:43:13,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765358869] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:13,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:13,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:13,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558053517] [2021-10-08 14:43:13,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:13,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:13,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:13,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:13,924 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) [2021-10-08 14:43:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:14,354 INFO L93 Difference]: Finished difference Result 1368 states and 4047 transitions. [2021-10-08 14:43:14,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:43:14,354 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 [2021-10-08 14:43:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:14,357 INFO L225 Difference]: With dead ends: 1368 [2021-10-08 14:43:14,357 INFO L226 Difference]: Without dead ends: 1352 [2021-10-08 14:43:14,357 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2021-10-08 14:43:14,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-10-08 14:43:14,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1344. [2021-10-08 14:43:14,375 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) [2021-10-08 14:43:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1344 states to 1344 states and 4007 transitions. [2021-10-08 14:43:14,379 INFO L78 Accepts]: Start accepts. Automaton has 1344 states and 4007 transitions. Word has length 38 [2021-10-08 14:43:14,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:14,379 INFO L470 AbstractCegarLoop]: Abstraction has 1344 states and 4007 transitions. [2021-10-08 14:43:14,379 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) [2021-10-08 14:43:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1344 states and 4007 transitions. [2021-10-08 14:43:14,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:14,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:14,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:14,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2021-10-08 14:43:14,383 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)] === [2021-10-08 14:43:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:14,383 INFO L82 PathProgramCache]: Analyzing trace with hash 930283311, now seen corresponding path program 282 times [2021-10-08 14:43:14,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:14,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301444188] [2021-10-08 14:43:14,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:14,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:14,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:14,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:14,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301444188] [2021-10-08 14:43:14,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301444188] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:14,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:14,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:14,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783091517] [2021-10-08 14:43:14,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:14,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:14,515 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) [2021-10-08 14:43:14,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:14,976 INFO L93 Difference]: Finished difference Result 1404 states and 4124 transitions. [2021-10-08 14:43:14,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 14:43:14,977 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 [2021-10-08 14:43:14,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:14,980 INFO L225 Difference]: With dead ends: 1404 [2021-10-08 14:43:14,980 INFO L226 Difference]: Without dead ends: 1378 [2021-10-08 14:43:14,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 212.0ms TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:43:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-10-08 14:43:14,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1338. [2021-10-08 14:43:14,996 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) [2021-10-08 14:43:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 3992 transitions. [2021-10-08 14:43:14,999 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 3992 transitions. Word has length 38 [2021-10-08 14:43:14,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:14,999 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 3992 transitions. [2021-10-08 14:43:14,999 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) [2021-10-08 14:43:14,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 3992 transitions. [2021-10-08 14:43:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:15,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:15,001 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] [2021-10-08 14:43:15,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2021-10-08 14:43:15,001 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)] === [2021-10-08 14:43:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1345474353, now seen corresponding path program 283 times [2021-10-08 14:43:15,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:15,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103738509] [2021-10-08 14:43:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:15,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:15,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:15,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:15,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103738509] [2021-10-08 14:43:15,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103738509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:15,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:15,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:15,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704640142] [2021-10-08 14:43:15,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:15,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:15,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:15,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:15,131 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) [2021-10-08 14:43:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:15,479 INFO L93 Difference]: Finished difference Result 1326 states and 3960 transitions. [2021-10-08 14:43:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 14:43:15,480 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 [2021-10-08 14:43:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:15,482 INFO L225 Difference]: With dead ends: 1326 [2021-10-08 14:43:15,482 INFO L226 Difference]: Without dead ends: 1300 [2021-10-08 14:43:15,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 184.2ms TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-10-08 14:43:15,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2021-10-08 14:43:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2021-10-08 14:43:15,497 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) [2021-10-08 14:43:15,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 3917 transitions. [2021-10-08 14:43:15,499 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 3917 transitions. Word has length 38 [2021-10-08 14:43:15,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:15,500 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 3917 transitions. [2021-10-08 14:43:15,500 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) [2021-10-08 14:43:15,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 3917 transitions. [2021-10-08 14:43:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:15,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:15,502 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] [2021-10-08 14:43:15,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2021-10-08 14:43:15,502 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)] === [2021-10-08 14:43:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:15,502 INFO L82 PathProgramCache]: Analyzing trace with hash -34513417, now seen corresponding path program 284 times [2021-10-08 14:43:15,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:15,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068235943] [2021-10-08 14:43:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:15,503 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:15,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:15,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068235943] [2021-10-08 14:43:15,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068235943] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:15,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:15,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:15,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440066824] [2021-10-08 14:43:15,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:15,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:15,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:15,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:15,608 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) [2021-10-08 14:43:15,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:15,951 INFO L93 Difference]: Finished difference Result 1354 states and 4012 transitions. [2021-10-08 14:43:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:15,951 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 [2021-10-08 14:43:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:15,954 INFO L225 Difference]: With dead ends: 1354 [2021-10-08 14:43:15,954 INFO L226 Difference]: Without dead ends: 1346 [2021-10-08 14:43:15,954 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 141.2ms TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2021-10-08 14:43:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1300. [2021-10-08 14:43:15,969 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) [2021-10-08 14:43:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 3915 transitions. [2021-10-08 14:43:15,972 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 3915 transitions. Word has length 38 [2021-10-08 14:43:15,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:15,972 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 3915 transitions. [2021-10-08 14:43:15,972 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) [2021-10-08 14:43:15,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 3915 transitions. [2021-10-08 14:43:15,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:15,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:15,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:15,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2021-10-08 14:43:15,974 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)] === [2021-10-08 14:43:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:15,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1028827037, now seen corresponding path program 285 times [2021-10-08 14:43:15,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:15,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144133867] [2021-10-08 14:43:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:15,975 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:16,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:16,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144133867] [2021-10-08 14:43:16,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144133867] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:16,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:16,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:16,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105438739] [2021-10-08 14:43:16,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:16,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:16,084 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) [2021-10-08 14:43:16,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:16,374 INFO L93 Difference]: Finished difference Result 1330 states and 3958 transitions. [2021-10-08 14:43:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:16,374 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 [2021-10-08 14:43:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:16,377 INFO L225 Difference]: With dead ends: 1330 [2021-10-08 14:43:16,377 INFO L226 Difference]: Without dead ends: 1312 [2021-10-08 14:43:16,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 121.8ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-10-08 14:43:16,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2021-10-08 14:43:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1294. [2021-10-08 14:43:16,392 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) [2021-10-08 14:43:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 3896 transitions. [2021-10-08 14:43:16,395 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 3896 transitions. Word has length 38 [2021-10-08 14:43:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:16,395 INFO L470 AbstractCegarLoop]: Abstraction has 1294 states and 3896 transitions. [2021-10-08 14:43:16,395 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) [2021-10-08 14:43:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 3896 transitions. [2021-10-08 14:43:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:16,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:16,397 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:16,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2021-10-08 14:43:16,397 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)] === [2021-10-08 14:43:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1618477979, now seen corresponding path program 286 times [2021-10-08 14:43:16,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:16,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148477678] [2021-10-08 14:43:16,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:16,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:16,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:16,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148477678] [2021-10-08 14:43:16,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148477678] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:16,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:16,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:16,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922610613] [2021-10-08 14:43:16,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:16,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:16,499 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) [2021-10-08 14:43:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:16,772 INFO L93 Difference]: Finished difference Result 1338 states and 3976 transitions. [2021-10-08 14:43:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:16,773 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 [2021-10-08 14:43:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:16,777 INFO L225 Difference]: With dead ends: 1338 [2021-10-08 14:43:16,777 INFO L226 Difference]: Without dead ends: 1330 [2021-10-08 14:43:16,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 128.3ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-10-08 14:43:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1292. [2021-10-08 14:43:16,802 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) [2021-10-08 14:43:16,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 3891 transitions. [2021-10-08 14:43:16,806 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 3891 transitions. Word has length 38 [2021-10-08 14:43:16,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:16,806 INFO L470 AbstractCegarLoop]: Abstraction has 1292 states and 3891 transitions. [2021-10-08 14:43:16,807 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) [2021-10-08 14:43:16,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 3891 transitions. [2021-10-08 14:43:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:16,810 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:16,810 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:16,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2021-10-08 14:43:16,810 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)] === [2021-10-08 14:43:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1554073871, now seen corresponding path program 287 times [2021-10-08 14:43:16,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:16,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921938385] [2021-10-08 14:43:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:16,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:16,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:16,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921938385] [2021-10-08 14:43:16,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921938385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:16,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:16,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:16,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886368916] [2021-10-08 14:43:16,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:16,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:16,911 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) [2021-10-08 14:43:17,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:17,218 INFO L93 Difference]: Finished difference Result 1344 states and 3987 transitions. [2021-10-08 14:43:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:17,218 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 [2021-10-08 14:43:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:17,221 INFO L225 Difference]: With dead ends: 1344 [2021-10-08 14:43:17,221 INFO L226 Difference]: Without dead ends: 1326 [2021-10-08 14:43:17,221 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 148.5ms TimeCoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:43:17,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-10-08 14:43:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1290. [2021-10-08 14:43:17,237 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) [2021-10-08 14:43:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3886 transitions. [2021-10-08 14:43:17,240 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3886 transitions. Word has length 38 [2021-10-08 14:43:17,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:17,241 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 3886 transitions. [2021-10-08 14:43:17,241 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) [2021-10-08 14:43:17,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3886 transitions. [2021-10-08 14:43:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:17,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:17,243 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] [2021-10-08 14:43:17,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2021-10-08 14:43:17,243 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)] === [2021-10-08 14:43:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1981942277, now seen corresponding path program 288 times [2021-10-08 14:43:17,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:17,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410412376] [2021-10-08 14:43:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:17,244 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:17,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:17,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410412376] [2021-10-08 14:43:17,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410412376] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:17,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:17,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:17,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141611849] [2021-10-08 14:43:17,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:17,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:17,342 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) [2021-10-08 14:43:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:17,682 INFO L93 Difference]: Finished difference Result 1348 states and 3991 transitions. [2021-10-08 14:43:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:17,683 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 [2021-10-08 14:43:17,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:17,686 INFO L225 Difference]: With dead ends: 1348 [2021-10-08 14:43:17,686 INFO L226 Difference]: Without dead ends: 1332 [2021-10-08 14:43:17,686 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 155.8ms TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-08 14:43:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1288. [2021-10-08 14:43:17,702 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) [2021-10-08 14:43:17,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 3881 transitions. [2021-10-08 14:43:17,704 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 3881 transitions. Word has length 38 [2021-10-08 14:43:17,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:17,705 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 3881 transitions. [2021-10-08 14:43:17,705 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) [2021-10-08 14:43:17,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 3881 transitions. [2021-10-08 14:43:17,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:17,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:17,707 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:17,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2021-10-08 14:43:17,707 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)] === [2021-10-08 14:43:17,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:17,707 INFO L82 PathProgramCache]: Analyzing trace with hash -134786789, now seen corresponding path program 289 times [2021-10-08 14:43:17,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:17,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581730484] [2021-10-08 14:43:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:17,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:17,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:17,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581730484] [2021-10-08 14:43:17,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581730484] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:17,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:17,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:17,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606195404] [2021-10-08 14:43:17,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:17,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:17,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:17,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:17,810 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) [2021-10-08 14:43:18,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:18,122 INFO L93 Difference]: Finished difference Result 1364 states and 4022 transitions. [2021-10-08 14:43:18,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:18,123 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 [2021-10-08 14:43:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:18,125 INFO L225 Difference]: With dead ends: 1364 [2021-10-08 14:43:18,125 INFO L226 Difference]: Without dead ends: 1332 [2021-10-08 14:43:18,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 128.9ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-10-08 14:43:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1276. [2021-10-08 14:43:18,141 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) [2021-10-08 14:43:18,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 3853 transitions. [2021-10-08 14:43:18,143 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 3853 transitions. Word has length 38 [2021-10-08 14:43:18,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:18,144 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 3853 transitions. [2021-10-08 14:43:18,144 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) [2021-10-08 14:43:18,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 3853 transitions. [2021-10-08 14:43:18,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:18,146 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:18,146 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:18,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2021-10-08 14:43:18,146 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)] === [2021-10-08 14:43:18,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:18,146 INFO L82 PathProgramCache]: Analyzing trace with hash 58233013, now seen corresponding path program 290 times [2021-10-08 14:43:18,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:18,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354506480] [2021-10-08 14:43:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:18,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:18,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:18,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354506480] [2021-10-08 14:43:18,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354506480] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:18,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:18,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:18,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897343781] [2021-10-08 14:43:18,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:18,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:18,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:18,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:18,232 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) [2021-10-08 14:43:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:18,511 INFO L93 Difference]: Finished difference Result 1312 states and 3921 transitions. [2021-10-08 14:43:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:18,512 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 [2021-10-08 14:43:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:18,514 INFO L225 Difference]: With dead ends: 1312 [2021-10-08 14:43:18,514 INFO L226 Difference]: Without dead ends: 1304 [2021-10-08 14:43:18,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:43:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-08 14:43:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1272. [2021-10-08 14:43:18,530 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) [2021-10-08 14:43:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 3843 transitions. [2021-10-08 14:43:18,533 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 3843 transitions. Word has length 38 [2021-10-08 14:43:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:18,533 INFO L470 AbstractCegarLoop]: Abstraction has 1272 states and 3843 transitions. [2021-10-08 14:43:18,533 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) [2021-10-08 14:43:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 3843 transitions. [2021-10-08 14:43:18,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:18,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:18,535 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:18,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2021-10-08 14:43:18,535 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)] === [2021-10-08 14:43:18,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:18,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1049258553, now seen corresponding path program 291 times [2021-10-08 14:43:18,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:18,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605445697] [2021-10-08 14:43:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:18,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:18,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:18,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:18,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605445697] [2021-10-08 14:43:18,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605445697] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:18,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:18,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:18,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276334178] [2021-10-08 14:43:18,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:18,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:18,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:18,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:18,657 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) [2021-10-08 14:43:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:19,015 INFO L93 Difference]: Finished difference Result 1310 states and 3914 transitions. [2021-10-08 14:43:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:19,016 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 [2021-10-08 14:43:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:19,018 INFO L225 Difference]: With dead ends: 1310 [2021-10-08 14:43:19,018 INFO L226 Difference]: Without dead ends: 1302 [2021-10-08 14:43:19,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2021-10-08 14:43:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1270. [2021-10-08 14:43:19,033 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) [2021-10-08 14:43:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 3838 transitions. [2021-10-08 14:43:19,036 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 3838 transitions. Word has length 38 [2021-10-08 14:43:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:19,036 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 3838 transitions. [2021-10-08 14:43:19,036 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) [2021-10-08 14:43:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 3838 transitions. [2021-10-08 14:43:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:19,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:19,038 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:19,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2021-10-08 14:43:19,038 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)] === [2021-10-08 14:43:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:19,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2043572173, now seen corresponding path program 292 times [2021-10-08 14:43:19,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:19,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404743726] [2021-10-08 14:43:19,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:19,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:19,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:19,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404743726] [2021-10-08 14:43:19,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404743726] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:19,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:19,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:19,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485942935] [2021-10-08 14:43:19,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:19,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:19,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:19,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:19,152 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) [2021-10-08 14:43:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:19,415 INFO L93 Difference]: Finished difference Result 1282 states and 3854 transitions. [2021-10-08 14:43:19,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:19,416 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 [2021-10-08 14:43:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:19,419 INFO L225 Difference]: With dead ends: 1282 [2021-10-08 14:43:19,419 INFO L226 Difference]: Without dead ends: 1264 [2021-10-08 14:43:19,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 140.1ms TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2021-10-08 14:43:19,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-10-08 14:43:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2021-10-08 14:43:19,434 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) [2021-10-08 14:43:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 3823 transitions. [2021-10-08 14:43:19,436 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 3823 transitions. Word has length 38 [2021-10-08 14:43:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:19,437 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 3823 transitions. [2021-10-08 14:43:19,437 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) [2021-10-08 14:43:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 3823 transitions. [2021-10-08 14:43:19,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:19,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:19,439 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] [2021-10-08 14:43:19,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2021-10-08 14:43:19,439 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)] === [2021-10-08 14:43:19,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:19,439 INFO L82 PathProgramCache]: Analyzing trace with hash -463195237, now seen corresponding path program 293 times [2021-10-08 14:43:19,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:19,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484569802] [2021-10-08 14:43:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:19,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:19,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:19,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484569802] [2021-10-08 14:43:19,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484569802] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:19,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:19,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:19,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476247201] [2021-10-08 14:43:19,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:19,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:19,556 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) [2021-10-08 14:43:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:19,808 INFO L93 Difference]: Finished difference Result 1278 states and 3842 transitions. [2021-10-08 14:43:19,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 14:43:19,808 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 [2021-10-08 14:43:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:19,811 INFO L225 Difference]: With dead ends: 1278 [2021-10-08 14:43:19,811 INFO L226 Difference]: Without dead ends: 1262 [2021-10-08 14:43:19,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 141.8ms TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-10-08 14:43:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2021-10-08 14:43:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2021-10-08 14:43:19,826 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) [2021-10-08 14:43:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3818 transitions. [2021-10-08 14:43:19,828 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3818 transitions. Word has length 38 [2021-10-08 14:43:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:19,828 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 3818 transitions. [2021-10-08 14:43:19,829 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) [2021-10-08 14:43:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3818 transitions. [2021-10-08 14:43:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:19,830 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:19,831 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:19,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2021-10-08 14:43:19,831 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)] === [2021-10-08 14:43:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1589133887, now seen corresponding path program 294 times [2021-10-08 14:43:19,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:19,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894845743] [2021-10-08 14:43:19,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:19,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:19,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:19,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894845743] [2021-10-08 14:43:19,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894845743] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:19,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:19,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:19,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6835448] [2021-10-08 14:43:19,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:19,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:19,958 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) [2021-10-08 14:43:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:20,351 INFO L93 Difference]: Finished difference Result 1324 states and 3938 transitions. [2021-10-08 14:43:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:20,351 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 [2021-10-08 14:43:20,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:20,354 INFO L225 Difference]: With dead ends: 1324 [2021-10-08 14:43:20,354 INFO L226 Difference]: Without dead ends: 1304 [2021-10-08 14:43:20,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 169.3ms TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2021-10-08 14:43:20,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1262. [2021-10-08 14:43:20,370 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) [2021-10-08 14:43:20,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 3812 transitions. [2021-10-08 14:43:20,373 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 3812 transitions. Word has length 38 [2021-10-08 14:43:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:20,373 INFO L470 AbstractCegarLoop]: Abstraction has 1262 states and 3812 transitions. [2021-10-08 14:43:20,373 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) [2021-10-08 14:43:20,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 3812 transitions. [2021-10-08 14:43:20,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:20,376 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:20,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:20,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2021-10-08 14:43:20,377 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)] === [2021-10-08 14:43:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1001856043, now seen corresponding path program 295 times [2021-10-08 14:43:20,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:20,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271405084] [2021-10-08 14:43:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:20,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:20,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:20,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271405084] [2021-10-08 14:43:20,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271405084] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:20,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:20,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-08 14:43:20,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608486931] [2021-10-08 14:43:20,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 14:43:20,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 14:43:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-08 14:43:20,509 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) [2021-10-08 14:43:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:20,835 INFO L93 Difference]: Finished difference Result 1276 states and 3835 transitions. [2021-10-08 14:43:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:20,835 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 [2021-10-08 14:43:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:20,838 INFO L225 Difference]: With dead ends: 1276 [2021-10-08 14:43:20,838 INFO L226 Difference]: Without dead ends: 1258 [2021-10-08 14:43:20,838 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 163.4ms TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 14:43:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2021-10-08 14:43:20,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2021-10-08 14:43:20,853 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) [2021-10-08 14:43:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 3797 transitions. [2021-10-08 14:43:20,856 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 3797 transitions. Word has length 38 [2021-10-08 14:43:20,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:20,856 INFO L470 AbstractCegarLoop]: Abstraction has 1256 states and 3797 transitions. [2021-10-08 14:43:20,856 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) [2021-10-08 14:43:20,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 3797 transitions. [2021-10-08 14:43:20,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:20,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:20,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:20,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2021-10-08 14:43:20,858 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)] === [2021-10-08 14:43:20,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:20,859 INFO L82 PathProgramCache]: Analyzing trace with hash -565980259, now seen corresponding path program 296 times [2021-10-08 14:43:20,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:20,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141517907] [2021-10-08 14:43:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:20,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:20,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:20,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141517907] [2021-10-08 14:43:20,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141517907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:20,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:20,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:20,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889365267] [2021-10-08 14:43:20,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:20,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:20,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:20,982 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) [2021-10-08 14:43:21,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:21,337 INFO L93 Difference]: Finished difference Result 1270 states and 3820 transitions. [2021-10-08 14:43:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 14:43:21,338 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 [2021-10-08 14:43:21,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:21,340 INFO L225 Difference]: With dead ends: 1270 [2021-10-08 14:43:21,340 INFO L226 Difference]: Without dead ends: 1248 [2021-10-08 14:43:21,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 182.8ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 14:43:21,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-10-08 14:43:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-10-08 14:43:21,355 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) [2021-10-08 14:43:21,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 3783 transitions. [2021-10-08 14:43:21,358 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 3783 transitions. Word has length 38 [2021-10-08 14:43:21,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:21,358 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 3783 transitions. [2021-10-08 14:43:21,358 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) [2021-10-08 14:43:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 3783 transitions. [2021-10-08 14:43:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:21,360 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:21,360 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:21,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2021-10-08 14:43:21,361 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)] === [2021-10-08 14:43:21,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:21,361 INFO L82 PathProgramCache]: Analyzing trace with hash 594889713, now seen corresponding path program 297 times [2021-10-08 14:43:21,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:21,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013309568] [2021-10-08 14:43:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:21,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:21,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:21,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013309568] [2021-10-08 14:43:21,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013309568] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:21,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:21,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-08 14:43:21,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039569854] [2021-10-08 14:43:21,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 14:43:21,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 14:43:21,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 14:43:21,488 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) [2021-10-08 14:43:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:21,738 INFO L93 Difference]: Finished difference Result 1230 states and 3742 transitions. [2021-10-08 14:43:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 14:43:21,738 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 [2021-10-08 14:43:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:21,740 INFO L225 Difference]: With dead ends: 1230 [2021-10-08 14:43:21,741 INFO L226 Difference]: Without dead ends: 1196 [2021-10-08 14:43:21,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 156.7ms TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-10-08 14:43:21,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-10-08 14:43:21,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2021-10-08 14:43:21,755 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) [2021-10-08 14:43:21,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 3687 transitions. [2021-10-08 14:43:21,757 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 3687 transitions. Word has length 38 [2021-10-08 14:43:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:21,758 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 3687 transitions. [2021-10-08 14:43:21,758 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) [2021-10-08 14:43:21,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 3687 transitions. [2021-10-08 14:43:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:21,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:21,760 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] [2021-10-08 14:43:21,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2021-10-08 14:43:21,760 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)] === [2021-10-08 14:43:21,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1270181275, now seen corresponding path program 298 times [2021-10-08 14:43:21,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:21,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726252193] [2021-10-08 14:43:21,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:21,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:21,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:21,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:21,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726252193] [2021-10-08 14:43:21,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726252193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:21,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:21,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-08 14:43:21,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331851886] [2021-10-08 14:43:21,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 14:43:21,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 14:43:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 14:43:21,838 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) [2021-10-08 14:43:22,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:22,068 INFO L93 Difference]: Finished difference Result 1510 states and 4550 transitions. [2021-10-08 14:43:22,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 14:43:22,068 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 [2021-10-08 14:43:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:22,071 INFO L225 Difference]: With dead ends: 1510 [2021-10-08 14:43:22,071 INFO L226 Difference]: Without dead ends: 1348 [2021-10-08 14:43:22,071 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-08 14:43:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2021-10-08 14:43:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1340. [2021-10-08 14:43:22,087 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) [2021-10-08 14:43:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 4052 transitions. [2021-10-08 14:43:22,090 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 4052 transitions. Word has length 38 [2021-10-08 14:43:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:22,090 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 4052 transitions. [2021-10-08 14:43:22,090 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) [2021-10-08 14:43:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 4052 transitions. [2021-10-08 14:43:22,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:22,092 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:22,092 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 14:43:22,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2021-10-08 14:43:22,092 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)] === [2021-10-08 14:43:22,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 327842679, now seen corresponding path program 299 times [2021-10-08 14:43:22,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:22,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737127960] [2021-10-08 14:43:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:22,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:22,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:22,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737127960] [2021-10-08 14:43:22,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737127960] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:22,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:22,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-08 14:43:22,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733214048] [2021-10-08 14:43:22,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 14:43:22,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 14:43:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:22,185 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) [2021-10-08 14:43:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:22,413 INFO L93 Difference]: Finished difference Result 1586 states and 4687 transitions. [2021-10-08 14:43:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 14:43:22,413 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 [2021-10-08 14:43:22,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:22,416 INFO L225 Difference]: With dead ends: 1586 [2021-10-08 14:43:22,416 INFO L226 Difference]: Without dead ends: 1470 [2021-10-08 14:43:22,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-08 14:43:22,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-10-08 14:43:22,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1440. [2021-10-08 14:43:22,432 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) [2021-10-08 14:43:22,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4286 transitions. [2021-10-08 14:43:22,435 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4286 transitions. Word has length 38 [2021-10-08 14:43:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:22,435 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4286 transitions. [2021-10-08 14:43:22,435 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) [2021-10-08 14:43:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4286 transitions. [2021-10-08 14:43:22,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-08 14:43:22,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 14:43:22,438 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] [2021-10-08 14:43:22,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2021-10-08 14:43:22,438 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)] === [2021-10-08 14:43:22,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 14:43:22,438 INFO L82 PathProgramCache]: Analyzing trace with hash -83790857, now seen corresponding path program 300 times [2021-10-08 14:43:22,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-08 14:43:22,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18873590] [2021-10-08 14:43:22,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 14:43:22,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-08 14:43:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 14:43:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 14:43:22,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-08 14:43:22,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18873590] [2021-10-08 14:43:22,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18873590] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-08 14:43:22,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-08 14:43:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-08 14:43:22,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653821779] [2021-10-08 14:43:22,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 14:43:22,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-08 14:43:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 14:43:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-08 14:43:22,560 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) [2021-10-08 14:43:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 14:43:22,667 INFO L93 Difference]: Finished difference Result 1439 states and 4285 transitions. [2021-10-08 14:43:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 14:43:22,667 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 [2021-10-08 14:43:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 14:43:22,667 INFO L225 Difference]: With dead ends: 1439 [2021-10-08 14:43:22,667 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 14:43:22,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 67.6ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-08 14:43:22,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 14:43:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 14:43:22,668 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) [2021-10-08 14:43:22,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 14:43:22,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-10-08 14:43:22,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 14:43:22,668 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 14:43:22,668 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) [2021-10-08 14:43:22,668 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 14:43:22,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 14:43:22,671 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-08 14:43:22,672 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 14:43:22,679 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 14:43:22,680 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 14:43:22,680 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-08 14:43:22,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2021-10-08 14:43:22,685 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 14:43:22,686 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 14:43:22,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 02:43:22 BasicIcfg [2021-10-08 14:43:22,688 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 14:43:22,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-08 14:43:22,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-08 14:43:22,689 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-08 14:43:22,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 02:39:16" (3/4) ... [2021-10-08 14:43:22,692 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-08 14:43:22,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-08 14:43:22,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-08 14:43:22,699 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-08 14:43:22,700 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-08 14:43:22,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-10-08 14:43:22,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-08 14:43:22,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:43:22,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-08 14:43:22,746 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-08 14:43:22,746 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-08 14:43:22,748 INFO L168 Benchmark]: Toolchain (without parser) took 247100.96 ms. Allocated memory was 60.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 36.5 MB in the beginning and 1.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 505.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,749 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-08 14:43:22,750 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.61 ms. Allocated memory is still 60.8 MB. Free memory was 36.1 MB in the beginning and 40.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.77 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,750 INFO L168 Benchmark]: Boogie Preprocessor took 31.03 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,751 INFO L168 Benchmark]: RCFGBuilder took 754.46 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 35.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,752 INFO L168 Benchmark]: TraceAbstraction took 245883.98 ms. Allocated memory was 60.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 35.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 497.4 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,752 INFO L168 Benchmark]: Witness Printer took 57.96 ms. Allocated memory is still 1.8 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-08 14:43:22,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 46.1 MB. Free memory was 25.0 MB in the beginning and 25.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.61 ms. Allocated memory is still 60.8 MB. Free memory was 36.1 MB in the beginning and 40.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.77 ms. Allocated memory is still 60.8 MB. Free memory was 40.6 MB in the beginning and 38.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.03 ms. Allocated memory is still 60.8 MB. Free memory was 38.6 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 754.46 ms. Allocated memory is still 60.8 MB. Free memory was 37.2 MB in the beginning and 35.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 245883.98 ms. Allocated memory was 60.8 MB in the beginning and 1.8 GB in the end (delta: 1.7 GB). Free memory was 35.0 MB in the beginning and 1.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 497.4 MB. Max. memory is 16.1 GB. * Witness Printer took 57.96 ms. Allocated memory is still 1.8 GB. Free memory was 1.3 GB in the beginning and 1.2 GB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6940.3ms, 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: 232, positive: 97, positive conditional: 0, positive unconditional: 97, negative: 135, negative conditional: 0, negative unconditional: 135, 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: 245694.2ms, OverallIterations: 301, TraceHistogramMax: 1, EmptinessCheckTime: 1997.9ms, AutomataDifference: 179233.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7236.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 29348 SDtfs, 42922 SDslu, 166386 SDs, 0 SdLazy, 166182 SolverSat, 10970 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90261.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7649 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 7063 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35970 ImplicationChecksByTransitivity, 64448.7ms 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: 21574.1ms AutomataMinimizationTime, 301 MinimizatonAttempts, 278748 StatesRemovedByMinimization, 293 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 576.9ms SsaConstructionTime, 6242.0ms SatisfiabilityAnalysisTime, 26494.5ms 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! [2021-10-08 14:43:22,801 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...