./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c503be2a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-lamport.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 d327afb3910c77befa92b43f1fb2cc472e97afda ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 17:44:06,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 17:44:06,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 17:44:06,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 17:44:06,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 17:44:06,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 17:44:06,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 17:44:06,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 17:44:06,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 17:44:06,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 17:44:06,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 17:44:06,643 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 17:44:06,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 17:44:06,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 17:44:06,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 17:44:06,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 17:44:06,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 17:44:06,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 17:44:06,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 17:44:06,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 17:44:06,676 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 17:44:06,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 17:44:06,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 17:44:06,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 17:44:06,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 17:44:06,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 17:44:06,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 17:44:06,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 17:44:06,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 17:44:06,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 17:44:06,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 17:44:06,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 17:44:06,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 17:44:06,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 17:44:06,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 17:44:06,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 17:44:06,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 17:44:06,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 17:44:06,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 17:44:06,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 17:44:06,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 17:44:06,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 17:44:06,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 17:44:06,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 17:44:06,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 17:44:06,770 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 17:44:06,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 17:44:06,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 17:44:06,773 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 17:44:06,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 17:44:06,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 17:44:06,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 17:44:06,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 17:44:06,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 17:44:06,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 17:44:06,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 17:44:06,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 17:44:06,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 17:44:06,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 17:44:06,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 17:44:06,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 17:44:06,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 17:44:06,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 17:44:06,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 17:44:06,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:44:06,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 17:44:06,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 17:44:06,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 17:44:06,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 17:44:06,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 17:44:06,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 17:44:06,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 17:44:06,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d327afb3910c77befa92b43f1fb2cc472e97afda [2021-10-13 17:44:07,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 17:44:07,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 17:44:07,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 17:44:07,312 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 17:44:07,313 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 17:44:07,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2021-10-13 17:44:07,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301755fd5/b731ededfba14d67ac689d9058c5cd84/FLAG6bdc8143e [2021-10-13 17:44:08,009 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 17:44:08,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2021-10-13 17:44:08,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301755fd5/b731ededfba14d67ac689d9058c5cd84/FLAG6bdc8143e [2021-10-13 17:44:08,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/301755fd5/b731ededfba14d67ac689d9058c5cd84 [2021-10-13 17:44:08,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 17:44:08,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 17:44:08,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 17:44:08,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 17:44:08,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 17:44:08,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3120752c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08, skipping insertion in model container [2021-10-13 17:44:08,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 17:44:08,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 17:44:08,697 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-lamport.wvr.c[2922,2935] [2021-10-13 17:44:08,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:44:08,720 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 17:44:08,748 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-lamport.wvr.c[2922,2935] [2021-10-13 17:44:08,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 17:44:08,769 INFO L208 MainTranslator]: Completed translation [2021-10-13 17:44:08,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08 WrapperNode [2021-10-13 17:44:08,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 17:44:08,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 17:44:08,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 17:44:08,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 17:44:08,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 17:44:08,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 17:44:08,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 17:44:08,873 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 17:44:08,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 17:44:08,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 17:44:08,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 17:44:08,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 17:44:08,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (1/1) ... [2021-10-13 17:44:08,978 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 17:44:08,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:09,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 17:44:09,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 17:44:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 17:44:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 17:44:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 17:44:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 17:44:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 17:44:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 17:44:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 17:44:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 17:44:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 17:44:09,090 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 17:44:09,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 17:44:09,758 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-10-13 17:44:09,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:44:09 BoogieIcfgContainer [2021-10-13 17:44:09,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 17:44:09,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 17:44:09,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 17:44:09,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 17:44:09,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 05:44:08" (1/3) ... [2021-10-13 17:44:09,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03c028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:44:09, skipping insertion in model container [2021-10-13 17:44:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 05:44:08" (2/3) ... [2021-10-13 17:44:09,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f03c028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 05:44:09, skipping insertion in model container [2021-10-13 17:44:09,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:44:09" (3/3) ... [2021-10-13 17:44:09,770 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2021-10-13 17:44:09,790 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-13 17:44:09,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 17:44:09,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 17:44:09,794 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 17:44:09,888 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,889 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,889 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,889 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,890 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,890 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,890 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,890 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,890 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,891 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,891 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,891 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,891 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,892 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,892 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,892 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,892 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,892 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,893 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,893 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,893 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,893 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,894 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,894 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,895 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,899 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,900 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,901 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,901 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,901 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,901 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,902 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,905 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,906 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,907 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,908 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,908 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,908 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,908 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,909 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,909 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,909 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,909 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,909 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,910 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,912 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,912 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,913 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,913 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,913 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,913 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,913 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,914 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,915 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,918 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,918 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,919 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,920 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,921 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,922 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,923 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,923 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,924 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,925 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,926 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,927 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,929 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,930 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,931 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,932 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,932 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,933 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,933 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,933 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,934 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,935 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,935 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,935 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,936 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,936 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,936 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,937 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,937 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,937 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,937 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,938 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,938 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,938 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,939 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,939 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,939 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,939 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,940 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,940 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,940 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,940 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,946 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,947 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,948 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,954 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,955 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,955 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,959 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,959 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,960 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,960 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,960 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,960 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 17:44:09,977 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-13 17:44:10,053 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 17:44:10,066 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 17:44:10,067 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 17:44:10,105 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 17:44:10,121 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 213 transitions, 450 flow [2021-10-13 17:44:10,125 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 213 transitions, 450 flow [2021-10-13 17:44:10,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 209 places, 213 transitions, 450 flow [2021-10-13 17:44:10,266 INFO L129 PetriNetUnfolder]: 14/210 cut-off events. [2021-10-13 17:44:10,267 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-13 17:44:10,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 210 events. 14/210 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2021-10-13 17:44:10,284 INFO L116 LiptonReduction]: Number of co-enabled transitions 5124 [2021-10-13 17:44:20,219 INFO L131 LiptonReduction]: Checked pairs total: 12820 [2021-10-13 17:44:20,219 INFO L133 LiptonReduction]: Total number of compositions: 226 [2021-10-13 17:44:20,229 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 44 transitions, 112 flow [2021-10-13 17:44:20,302 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 797 states, 796 states have (on average 3.1030150753768844) internal successors, (2470), 796 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 797 states, 796 states have (on average 3.1030150753768844) internal successors, (2470), 796 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-13 17:44:20,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:20,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:20,332 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:20,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:20,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2052537682, now seen corresponding path program 1 times [2021-10-13 17:44:20,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:20,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047979704] [2021-10-13 17:44:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:20,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:20,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:20,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:20,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047979704] [2021-10-13 17:44:20,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047979704] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:20,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:20,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:44:20,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957825636] [2021-10-13 17:44:20,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 17:44:20,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 17:44:20,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 17:44:20,652 INFO L87 Difference]: Start difference. First operand has 797 states, 796 states have (on average 3.1030150753768844) internal successors, (2470), 796 states have internal predecessors, (2470), 0 states have call successors, (0), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:20,711 INFO L93 Difference]: Finished difference Result 797 states and 2194 transitions. [2021-10-13 17:44:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 17:44:20,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-13 17:44:20,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:20,750 INFO L225 Difference]: With dead ends: 797 [2021-10-13 17:44:20,751 INFO L226 Difference]: Without dead ends: 797 [2021-10-13 17:44:20,752 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 17:44:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-10-13 17:44:20,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2021-10-13 17:44:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 2.7562814070351758) internal successors, (2194), 796 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 2194 transitions. [2021-10-13 17:44:20,908 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 2194 transitions. Word has length 19 [2021-10-13 17:44:20,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:20,909 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 2194 transitions. [2021-10-13 17:44:20,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 2194 transitions. [2021-10-13 17:44:20,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-13 17:44:20,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:20,920 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:20,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 17:44:20,921 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -805456859, now seen corresponding path program 1 times [2021-10-13 17:44:20,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:20,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079745211] [2021-10-13 17:44:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:20,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:21,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:21,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079745211] [2021-10-13 17:44:21,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079745211] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:21,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:21,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 17:44:21,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605713716] [2021-10-13 17:44:21,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 17:44:21,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:21,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 17:44:21,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:44:21,229 INFO L87 Difference]: Start difference. First operand 797 states and 2194 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:21,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:21,263 INFO L93 Difference]: Finished difference Result 798 states and 2195 transitions. [2021-10-13 17:44:21,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 17:44:21,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-13 17:44:21,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:21,271 INFO L225 Difference]: With dead ends: 798 [2021-10-13 17:44:21,272 INFO L226 Difference]: Without dead ends: 798 [2021-10-13 17:44:21,273 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:44:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2021-10-13 17:44:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2021-10-13 17:44:21,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.754077791718946) internal successors, (2195), 797 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2195 transitions. [2021-10-13 17:44:21,312 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2195 transitions. Word has length 35 [2021-10-13 17:44:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:21,312 INFO L470 AbstractCegarLoop]: Abstraction has 798 states and 2195 transitions. [2021-10-13 17:44:21,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:21,313 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2195 transitions. [2021-10-13 17:44:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 17:44:21,318 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:21,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:21,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 17:44:21,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:21,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash -673467912, now seen corresponding path program 1 times [2021-10-13 17:44:21,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:21,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008467238] [2021-10-13 17:44:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:21,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:21,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:21,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:21,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008467238] [2021-10-13 17:44:21,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008467238] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:21,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305036611] [2021-10-13 17:44:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:21,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:21,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:21,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:21,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 17:44:21,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:21,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-13 17:44:21,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:22,792 INFO L354 Elim1Store]: treesize reduction 19, result has 42.4 percent of original size [2021-10-13 17:44:22,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 37 [2021-10-13 17:44:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:22,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305036611] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:22,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:44:22,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 13 [2021-10-13 17:44:22,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298030873] [2021-10-13 17:44:22,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 17:44:22,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:22,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 17:44:22,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-13 17:44:22,830 INFO L87 Difference]: Start difference. First operand 798 states and 2195 transitions. Second operand has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:23,750 INFO L93 Difference]: Finished difference Result 1886 states and 4963 transitions. [2021-10-13 17:44:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-13 17:44:23,751 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 17:44:23,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:23,766 INFO L225 Difference]: With dead ends: 1886 [2021-10-13 17:44:23,766 INFO L226 Difference]: Without dead ends: 1780 [2021-10-13 17:44:23,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 701.4ms TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:44:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-10-13 17:44:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1240. [2021-10-13 17:44:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1239 states have (on average 2.767554479418886) internal successors, (3429), 1239 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 3429 transitions. [2021-10-13 17:44:23,832 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 3429 transitions. Word has length 36 [2021-10-13 17:44:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:23,833 INFO L470 AbstractCegarLoop]: Abstraction has 1240 states and 3429 transitions. [2021-10-13 17:44:23,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 3429 transitions. [2021-10-13 17:44:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 17:44:23,840 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:23,840 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:23,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 17:44:24,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:24,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:24,056 INFO L82 PathProgramCache]: Analyzing trace with hash 2003366322, now seen corresponding path program 2 times [2021-10-13 17:44:24,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:24,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541599195] [2021-10-13 17:44:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:24,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:24,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:24,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541599195] [2021-10-13 17:44:24,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541599195] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:24,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445903492] [2021-10-13 17:44:24,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 17:44:24,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:24,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:24,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:24,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 17:44:24,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 17:44:24,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:24,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 17:44:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:24,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 938 treesize of output 922 [2021-10-13 17:44:24,956 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:24,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:25,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:25,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:25,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:44:25,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445903492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:25,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:25,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2021-10-13 17:44:25,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977458320] [2021-10-13 17:44:25,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:44:25,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:25,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:44:25,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:44:25,102 INFO L87 Difference]: Start difference. First operand 1240 states and 3429 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:25,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:25,729 INFO L93 Difference]: Finished difference Result 1811 states and 4935 transitions. [2021-10-13 17:44:25,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 17:44:25,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 17:44:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:25,746 INFO L225 Difference]: With dead ends: 1811 [2021-10-13 17:44:25,746 INFO L226 Difference]: Without dead ends: 1768 [2021-10-13 17:44:25,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 408.9ms TimeCoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2021-10-13 17:44:25,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-10-13 17:44:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1514. [2021-10-13 17:44:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1514 states, 1513 states have (on average 2.769332452081956) internal successors, (4190), 1513 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:25,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1514 states to 1514 states and 4190 transitions. [2021-10-13 17:44:25,810 INFO L78 Accepts]: Start accepts. Automaton has 1514 states and 4190 transitions. Word has length 36 [2021-10-13 17:44:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:25,811 INFO L470 AbstractCegarLoop]: Abstraction has 1514 states and 4190 transitions. [2021-10-13 17:44:25,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:25,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1514 states and 4190 transitions. [2021-10-13 17:44:25,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 17:44:25,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:25,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:25,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:26,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:26,041 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:26,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:26,042 INFO L82 PathProgramCache]: Analyzing trace with hash -458326370, now seen corresponding path program 3 times [2021-10-13 17:44:26,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:26,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423632771] [2021-10-13 17:44:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:26,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:26,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:26,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423632771] [2021-10-13 17:44:26,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423632771] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:26,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960611732] [2021-10-13 17:44:26,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 17:44:26,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:26,462 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:26,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 17:44:26,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 17:44:26,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:26,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 17:44:26,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:26,626 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 17:44:26,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 769 treesize of output 705 [2021-10-13 17:44:26,896 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:26,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:26,989 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:26,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:44:27,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960611732] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:27,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:27,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2021-10-13 17:44:27,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921658313] [2021-10-13 17:44:27,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:44:27,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:27,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:44:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:44:27,014 INFO L87 Difference]: Start difference. First operand 1514 states and 4190 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:27,547 INFO L93 Difference]: Finished difference Result 1775 states and 4863 transitions. [2021-10-13 17:44:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:44:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 17:44:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:27,566 INFO L225 Difference]: With dead ends: 1775 [2021-10-13 17:44:27,566 INFO L226 Difference]: Without dead ends: 1740 [2021-10-13 17:44:27,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 366.8ms TimeCoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:44:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2021-10-13 17:44:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1528. [2021-10-13 17:44:27,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1527 states have (on average 2.7655533726260644) internal successors, (4223), 1527 states have internal predecessors, (4223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 4223 transitions. [2021-10-13 17:44:27,628 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 4223 transitions. Word has length 36 [2021-10-13 17:44:27,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:27,629 INFO L470 AbstractCegarLoop]: Abstraction has 1528 states and 4223 transitions. [2021-10-13 17:44:27,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 4223 transitions. [2021-10-13 17:44:27,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 17:44:27,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:27,635 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:27,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:27,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:27,849 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:27,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:27,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1891494438, now seen corresponding path program 4 times [2021-10-13 17:44:27,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:27,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229034172] [2021-10-13 17:44:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:27,853 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:28,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:28,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229034172] [2021-10-13 17:44:28,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229034172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:28,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775886995] [2021-10-13 17:44:28,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 17:44:28,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:28,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 17:44:28,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 17:44:28,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:28,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 17:44:28,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:28,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 158 [2021-10-13 17:44:28,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-10-13 17:44:28,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 17:44:28,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 17:44:28,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-10-13 17:44:29,254 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-10-13 17:44:29,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 26 [2021-10-13 17:44:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:29,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775886995] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:29,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:44:29,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2021-10-13 17:44:29,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849144115] [2021-10-13 17:44:29,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 17:44:29,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 17:44:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:44:29,351 INFO L87 Difference]: Start difference. First operand 1528 states and 4223 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:34,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:34,680 INFO L93 Difference]: Finished difference Result 2818 states and 7248 transitions. [2021-10-13 17:44:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 17:44:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 17:44:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:34,689 INFO L225 Difference]: With dead ends: 2818 [2021-10-13 17:44:34,689 INFO L226 Difference]: Without dead ends: 957 [2021-10-13 17:44:34,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 4187.3ms TimeCoverageRelationStatistics Valid=1059, Invalid=3101, Unknown=0, NotChecked=0, Total=4160 [2021-10-13 17:44:34,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-10-13 17:44:34,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 957. [2021-10-13 17:44:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 2.768828451882845) internal successors, (2647), 956 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2647 transitions. [2021-10-13 17:44:34,725 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2647 transitions. Word has length 36 [2021-10-13 17:44:34,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:34,726 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 2647 transitions. [2021-10-13 17:44:34,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2647 transitions. [2021-10-13 17:44:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:34,730 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:34,731 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:34,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:34,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:34,946 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:34,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:34,947 INFO L82 PathProgramCache]: Analyzing trace with hash -876777851, now seen corresponding path program 5 times [2021-10-13 17:44:34,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:34,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251306766] [2021-10-13 17:44:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:34,947 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:35,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251306766] [2021-10-13 17:44:35,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251306766] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:35,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809215652] [2021-10-13 17:44:35,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 17:44:35,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:35,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:35,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:35,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 17:44:35,760 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 17:44:35,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:35,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 17:44:35,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 17:44:36,027 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:36,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:36,251 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:36,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:44:36,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809215652] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:36,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:44:36,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2021-10-13 17:44:36,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882858497] [2021-10-13 17:44:36,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-13 17:44:36,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-13 17:44:36,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:44:36,276 INFO L87 Difference]: Start difference. First operand 957 states and 2647 transitions. Second operand has 26 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:39,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:39,112 INFO L93 Difference]: Finished difference Result 2932 states and 7800 transitions. [2021-10-13 17:44:39,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 17:44:39,116 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:39,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:39,136 INFO L225 Difference]: With dead ends: 2932 [2021-10-13 17:44:39,136 INFO L226 Difference]: Without dead ends: 2659 [2021-10-13 17:44:39,138 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 2122.1ms TimeCoverageRelationStatistics Valid=489, Invalid=3543, Unknown=0, NotChecked=0, Total=4032 [2021-10-13 17:44:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2021-10-13 17:44:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 957. [2021-10-13 17:44:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 2.7102510460251046) internal successors, (2591), 956 states have internal predecessors, (2591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:39,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 2591 transitions. [2021-10-13 17:44:39,191 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 2591 transitions. Word has length 37 [2021-10-13 17:44:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:39,191 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 2591 transitions. [2021-10-13 17:44:39,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.68) internal successors, (67), 25 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 2591 transitions. [2021-10-13 17:44:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:39,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:39,197 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:39,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:39,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:39,412 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash -2094804377, now seen corresponding path program 6 times [2021-10-13 17:44:39,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:39,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917500006] [2021-10-13 17:44:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:39,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:40,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:40,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917500006] [2021-10-13 17:44:40,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917500006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:40,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251584611] [2021-10-13 17:44:40,373 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 17:44:40,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:40,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:40,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:40,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 17:44:40,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 17:44:40,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:40,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 17:44:40,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:40,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 161 [2021-10-13 17:44:40,822 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:40,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:40,977 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:40,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:40,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251584611] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:40,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:40,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 24 [2021-10-13 17:44:40,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255756609] [2021-10-13 17:44:40,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:44:40,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:44:40,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:44:40,999 INFO L87 Difference]: Start difference. First operand 957 states and 2591 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:41,641 INFO L93 Difference]: Finished difference Result 1188 states and 3189 transitions. [2021-10-13 17:44:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:44:41,642 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:41,651 INFO L225 Difference]: With dead ends: 1188 [2021-10-13 17:44:41,652 INFO L226 Difference]: Without dead ends: 988 [2021-10-13 17:44:41,652 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 809.8ms TimeCoverageRelationStatistics Valid=145, Invalid=1115, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 17:44:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-10-13 17:44:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 828. [2021-10-13 17:44:41,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 827 states have (on average 2.7327690447400244) internal successors, (2260), 827 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 2260 transitions. [2021-10-13 17:44:41,682 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 2260 transitions. Word has length 37 [2021-10-13 17:44:41,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:41,683 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 2260 transitions. [2021-10-13 17:44:41,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:41,683 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 2260 transitions. [2021-10-13 17:44:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:41,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:41,686 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:41,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:41,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:41,900 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:41,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1422172027, now seen corresponding path program 7 times [2021-10-13 17:44:41,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:41,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774658477] [2021-10-13 17:44:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:41,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:42,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:42,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774658477] [2021-10-13 17:44:42,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774658477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:42,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413624443] [2021-10-13 17:44:42,489 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 17:44:42,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:42,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:42,491 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:42,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 17:44:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 17:44:42,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:42,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 17:44:42,984 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:42,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:43,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:43,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:43,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413624443] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:43,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:43,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2021-10-13 17:44:43,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609590854] [2021-10-13 17:44:43,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:44:43,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:44:43,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:44:43,296 INFO L87 Difference]: Start difference. First operand 828 states and 2260 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:44,352 INFO L93 Difference]: Finished difference Result 1083 states and 2842 transitions. [2021-10-13 17:44:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:44:44,353 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:44,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:44,375 INFO L225 Difference]: With dead ends: 1083 [2021-10-13 17:44:44,375 INFO L226 Difference]: Without dead ends: 984 [2021-10-13 17:44:44,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 697.0ms TimeCoverageRelationStatistics Valid=128, Invalid=994, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:44:44,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-10-13 17:44:44,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 842. [2021-10-13 17:44:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 2.712247324613555) internal successors, (2281), 841 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2281 transitions. [2021-10-13 17:44:44,445 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2281 transitions. Word has length 37 [2021-10-13 17:44:44,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:44,445 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 2281 transitions. [2021-10-13 17:44:44,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:44,449 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2281 transitions. [2021-10-13 17:44:44,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:44,455 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:44,455 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:44,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:44,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:44,673 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1399326593, now seen corresponding path program 8 times [2021-10-13 17:44:44,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:44,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254970146] [2021-10-13 17:44:44,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:44,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:44,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:44,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:44,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254970146] [2021-10-13 17:44:44,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254970146] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:44,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:44,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:44:44,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881239343] [2021-10-13 17:44:44,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:44:44,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:44,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:44:44,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:44:44,800 INFO L87 Difference]: Start difference. First operand 842 states and 2281 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:44,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:44,956 INFO L93 Difference]: Finished difference Result 1512 states and 4016 transitions. [2021-10-13 17:44:44,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:44:44,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:44,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:44,966 INFO L225 Difference]: With dead ends: 1512 [2021-10-13 17:44:44,967 INFO L226 Difference]: Without dead ends: 1417 [2021-10-13 17:44:44,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-13 17:44:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2021-10-13 17:44:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 937. [2021-10-13 17:44:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 2.6688034188034186) internal successors, (2498), 936 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 2498 transitions. [2021-10-13 17:44:45,018 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 2498 transitions. Word has length 37 [2021-10-13 17:44:45,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:45,019 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 2498 transitions. [2021-10-13 17:44:45,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:45,019 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 2498 transitions. [2021-10-13 17:44:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:45,022 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:45,023 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:45,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 17:44:45,023 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:45,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:45,024 INFO L82 PathProgramCache]: Analyzing trace with hash -109474171, now seen corresponding path program 9 times [2021-10-13 17:44:45,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:45,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522069961] [2021-10-13 17:44:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:45,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:45,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:45,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:45,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522069961] [2021-10-13 17:44:45,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522069961] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:45,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104366081] [2021-10-13 17:44:45,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 17:44:45,489 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:45,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:45,490 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:45,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 17:44:45,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 17:44:45,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:45,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 17:44:45,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:46,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:46,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:46,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104366081] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:46,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:46,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2021-10-13 17:44:46,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888452592] [2021-10-13 17:44:46,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:44:46,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:44:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-10-13 17:44:46,129 INFO L87 Difference]: Start difference. First operand 937 states and 2498 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:46,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:46,799 INFO L93 Difference]: Finished difference Result 1346 states and 3386 transitions. [2021-10-13 17:44:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:44:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:46,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:46,806 INFO L225 Difference]: With dead ends: 1346 [2021-10-13 17:44:46,807 INFO L226 Difference]: Without dead ends: 1182 [2021-10-13 17:44:46,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 549.3ms TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-10-13 17:44:46,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-10-13 17:44:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 922. [2021-10-13 17:44:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 2.6558089033659065) internal successors, (2446), 921 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 2446 transitions. [2021-10-13 17:44:46,839 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 2446 transitions. Word has length 37 [2021-10-13 17:44:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 2446 transitions. [2021-10-13 17:44:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 2446 transitions. [2021-10-13 17:44:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:46,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:46,844 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:46,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:47,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-13 17:44:47,059 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:47,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:47,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1827809925, now seen corresponding path program 10 times [2021-10-13 17:44:47,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:47,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802549489] [2021-10-13 17:44:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:47,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:47,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:47,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:47,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802549489] [2021-10-13 17:44:47,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802549489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:47,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:47,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:44:47,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989924831] [2021-10-13 17:44:47,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:44:47,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:47,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:44:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:44:47,253 INFO L87 Difference]: Start difference. First operand 922 states and 2446 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:47,581 INFO L93 Difference]: Finished difference Result 1121 states and 2833 transitions. [2021-10-13 17:44:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:44:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:47,588 INFO L225 Difference]: With dead ends: 1121 [2021-10-13 17:44:47,589 INFO L226 Difference]: Without dead ends: 871 [2021-10-13 17:44:47,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 117.5ms TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-10-13 17:44:47,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-10-13 17:44:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 759. [2021-10-13 17:44:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.658311345646438) internal successors, (2015), 758 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 2015 transitions. [2021-10-13 17:44:47,613 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 2015 transitions. Word has length 37 [2021-10-13 17:44:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:47,613 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 2015 transitions. [2021-10-13 17:44:47,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 2015 transitions. [2021-10-13 17:44:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:47,616 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:47,617 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:47,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-13 17:44:47,617 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:47,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:47,618 INFO L82 PathProgramCache]: Analyzing trace with hash -631624243, now seen corresponding path program 11 times [2021-10-13 17:44:47,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:47,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481423413] [2021-10-13 17:44:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:47,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:47,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:47,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481423413] [2021-10-13 17:44:47,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481423413] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:47,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:47,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 17:44:47,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32515177] [2021-10-13 17:44:47,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 17:44:47,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:47,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 17:44:47,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 17:44:47,676 INFO L87 Difference]: Start difference. First operand 759 states and 2015 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:47,701 INFO L93 Difference]: Finished difference Result 771 states and 1997 transitions. [2021-10-13 17:44:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 17:44:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:47,706 INFO L225 Difference]: With dead ends: 771 [2021-10-13 17:44:47,707 INFO L226 Difference]: Without dead ends: 711 [2021-10-13 17:44:47,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 17:44:47,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2021-10-13 17:44:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 711. [2021-10-13 17:44:47,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 2.6352112676056336) internal successors, (1871), 710 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1871 transitions. [2021-10-13 17:44:47,729 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1871 transitions. Word has length 37 [2021-10-13 17:44:47,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:47,730 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 1871 transitions. [2021-10-13 17:44:47,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:47,730 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1871 transitions. [2021-10-13 17:44:47,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:47,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:47,733 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:47,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-13 17:44:47,733 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:47,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:47,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1038574643, now seen corresponding path program 12 times [2021-10-13 17:44:47,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:47,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911048741] [2021-10-13 17:44:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:47,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:47,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:47,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:47,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911048741] [2021-10-13 17:44:47,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911048741] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:47,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:47,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:44:47,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396755047] [2021-10-13 17:44:47,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:44:47,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:47,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:44:47,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:44:47,853 INFO L87 Difference]: Start difference. First operand 711 states and 1871 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:48,004 INFO L93 Difference]: Finished difference Result 1305 states and 3427 transitions. [2021-10-13 17:44:48,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 17:44:48,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:48,011 INFO L225 Difference]: With dead ends: 1305 [2021-10-13 17:44:48,011 INFO L226 Difference]: Without dead ends: 1203 [2021-10-13 17:44:48,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-13 17:44:48,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-10-13 17:44:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 717. [2021-10-13 17:44:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.6298882681564244) internal successors, (1883), 716 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1883 transitions. [2021-10-13 17:44:48,052 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1883 transitions. Word has length 37 [2021-10-13 17:44:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:48,052 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 1883 transitions. [2021-10-13 17:44:48,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1883 transitions. [2021-10-13 17:44:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:48,055 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:48,055 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:48,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-13 17:44:48,056 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1327034453, now seen corresponding path program 13 times [2021-10-13 17:44:48,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:48,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455850854] [2021-10-13 17:44:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:48,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:48,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:48,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455850854] [2021-10-13 17:44:48,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455850854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:48,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:48,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:44:48,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167925561] [2021-10-13 17:44:48,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:44:48,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:44:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:44:48,152 INFO L87 Difference]: Start difference. First operand 717 states and 1883 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:48,292 INFO L93 Difference]: Finished difference Result 1233 states and 3229 transitions. [2021-10-13 17:44:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:44:48,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:48,297 INFO L225 Difference]: With dead ends: 1233 [2021-10-13 17:44:48,297 INFO L226 Difference]: Without dead ends: 1137 [2021-10-13 17:44:48,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 76.4ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-13 17:44:48,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-10-13 17:44:48,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 735. [2021-10-13 17:44:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 2.614441416893733) internal successors, (1919), 734 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1919 transitions. [2021-10-13 17:44:48,336 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1919 transitions. Word has length 37 [2021-10-13 17:44:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:48,336 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 1919 transitions. [2021-10-13 17:44:48,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1919 transitions. [2021-10-13 17:44:48,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:48,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:48,340 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:48,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-13 17:44:48,340 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:48,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:48,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1328257851, now seen corresponding path program 14 times [2021-10-13 17:44:48,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:48,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930992976] [2021-10-13 17:44:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:48,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:48,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:48,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930992976] [2021-10-13 17:44:48,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930992976] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:48,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:44:48,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 17:44:48,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844839340] [2021-10-13 17:44:48,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 17:44:48,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 17:44:48,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:44:48,400 INFO L87 Difference]: Start difference. First operand 735 states and 1919 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:48,413 INFO L93 Difference]: Finished difference Result 729 states and 1895 transitions. [2021-10-13 17:44:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 17:44:48,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:48,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:48,417 INFO L225 Difference]: With dead ends: 729 [2021-10-13 17:44:48,417 INFO L226 Difference]: Without dead ends: 698 [2021-10-13 17:44:48,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 17:44:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2021-10-13 17:44:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2021-10-13 17:44:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 2.619799139167862) internal successors, (1826), 697 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1826 transitions. [2021-10-13 17:44:48,436 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1826 transitions. Word has length 37 [2021-10-13 17:44:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:48,437 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1826 transitions. [2021-10-13 17:44:48,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1826 transitions. [2021-10-13 17:44:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:48,439 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:48,440 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:48,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-13 17:44:48,440 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:48,441 INFO L82 PathProgramCache]: Analyzing trace with hash -246331989, now seen corresponding path program 15 times [2021-10-13 17:44:48,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:48,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708756755] [2021-10-13 17:44:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:48,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:48,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:48,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708756755] [2021-10-13 17:44:48,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708756755] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:48,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086076984] [2021-10-13 17:44:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 17:44:48,909 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:48,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:48,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 17:44:49,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 17:44:49,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:49,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 17:44:49,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:49,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 86 [2021-10-13 17:44:49,460 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:49,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:49,526 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:49,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:49,718 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:49,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:49,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086076984] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:49,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:49,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2021-10-13 17:44:49,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521626868] [2021-10-13 17:44:49,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:44:49,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:44:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2021-10-13 17:44:49,744 INFO L87 Difference]: Start difference. First operand 698 states and 1826 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:50,448 INFO L93 Difference]: Finished difference Result 929 states and 2342 transitions. [2021-10-13 17:44:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 17:44:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:50,451 INFO L225 Difference]: With dead ends: 929 [2021-10-13 17:44:50,451 INFO L226 Difference]: Without dead ends: 854 [2021-10-13 17:44:50,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 639.8ms TimeCoverageRelationStatistics Valid=134, Invalid=988, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 17:44:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-13 17:44:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 698. [2021-10-13 17:44:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 2.54519368723099) internal successors, (1774), 697 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1774 transitions. [2021-10-13 17:44:50,472 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1774 transitions. Word has length 37 [2021-10-13 17:44:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1774 transitions. [2021-10-13 17:44:50,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1774 transitions. [2021-10-13 17:44:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:50,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:50,476 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:50,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:50,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:50,690 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:50,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:50,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1864465051, now seen corresponding path program 16 times [2021-10-13 17:44:50,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:50,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107763602] [2021-10-13 17:44:50,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:50,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:51,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:51,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107763602] [2021-10-13 17:44:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107763602] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:51,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613258114] [2021-10-13 17:44:51,324 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 17:44:51,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:51,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:51,326 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:51,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 17:44:51,626 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 17:44:51,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:51,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 17:44:51,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:51,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2021-10-13 17:44:51,914 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:51,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:51,982 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:51,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:52,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:52,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:44:52,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613258114] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:52,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:44:52,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-10-13 17:44:52,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856951765] [2021-10-13 17:44:52,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 17:44:52,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:52,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 17:44:52,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:44:52,137 INFO L87 Difference]: Start difference. First operand 698 states and 1774 transitions. Second operand has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:54,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:54,099 INFO L93 Difference]: Finished difference Result 1767 states and 4407 transitions. [2021-10-13 17:44:54,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-13 17:44:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:54,104 INFO L225 Difference]: With dead ends: 1767 [2021-10-13 17:44:54,105 INFO L226 Difference]: Without dead ends: 1721 [2021-10-13 17:44:54,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1533.0ms TimeCoverageRelationStatistics Valid=317, Invalid=2133, Unknown=0, NotChecked=0, Total=2450 [2021-10-13 17:44:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2021-10-13 17:44:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 704. [2021-10-13 17:44:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 2.539118065433855) internal successors, (1785), 703 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:54,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1785 transitions. [2021-10-13 17:44:54,134 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1785 transitions. Word has length 37 [2021-10-13 17:44:54,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:54,135 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1785 transitions. [2021-10-13 17:44:54,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:54,135 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1785 transitions. [2021-10-13 17:44:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:54,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:54,138 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:54,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:54,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 17:44:54,351 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:54,352 INFO L82 PathProgramCache]: Analyzing trace with hash -31190447, now seen corresponding path program 17 times [2021-10-13 17:44:54,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:54,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227577168] [2021-10-13 17:44:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:54,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:54,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:55,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:55,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227577168] [2021-10-13 17:44:55,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227577168] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:55,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690258502] [2021-10-13 17:44:55,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 17:44:55,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:55,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:55,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:55,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 17:44:55,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 17:44:55,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:55,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-13 17:44:55,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:55,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-13 17:44:55,624 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:55,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:55,694 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:55,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:55,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:55,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:55,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:55,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690258502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:55,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:55,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2021-10-13 17:44:55,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499161301] [2021-10-13 17:44:55,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:44:55,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:44:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:44:55,859 INFO L87 Difference]: Start difference. First operand 704 states and 1785 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:56,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:56,620 INFO L93 Difference]: Finished difference Result 865 states and 2173 transitions. [2021-10-13 17:44:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 17:44:56,621 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:56,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:56,624 INFO L225 Difference]: With dead ends: 865 [2021-10-13 17:44:56,624 INFO L226 Difference]: Without dead ends: 846 [2021-10-13 17:44:56,625 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 835.0ms TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2021-10-13 17:44:56,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-10-13 17:44:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 710. [2021-10-13 17:44:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.533145275035261) internal successors, (1796), 709 states have internal predecessors, (1796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1796 transitions. [2021-10-13 17:44:56,677 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1796 transitions. Word has length 37 [2021-10-13 17:44:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:56,678 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 1796 transitions. [2021-10-13 17:44:56,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1796 transitions. [2021-10-13 17:44:56,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:56,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:56,684 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:56,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:56,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:56,910 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1464358515, now seen corresponding path program 18 times [2021-10-13 17:44:56,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:56,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324593625] [2021-10-13 17:44:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:56,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:57,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:57,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324593625] [2021-10-13 17:44:57,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324593625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:57,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011354663] [2021-10-13 17:44:57,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 17:44:57,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:57,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:57,616 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:57,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 17:44:57,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 17:44:57,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:44:57,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-13 17:44:57,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:44:57,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 17:44:58,255 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:58,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:58,334 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:44:58,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:44:58,483 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:44:58,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:44:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:44:58,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011354663] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:44:58,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:44:58,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 23 [2021-10-13 17:44:58,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389356091] [2021-10-13 17:44:58,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 17:44:58,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:44:58,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 17:44:58,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:44:58,502 INFO L87 Difference]: Start difference. First operand 710 states and 1796 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:59,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:44:59,055 INFO L93 Difference]: Finished difference Result 857 states and 2155 transitions. [2021-10-13 17:44:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:44:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:44:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:44:59,058 INFO L225 Difference]: With dead ends: 857 [2021-10-13 17:44:59,058 INFO L226 Difference]: Without dead ends: 714 [2021-10-13 17:44:59,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 783.2ms TimeCoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 17:44:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2021-10-13 17:44:59,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 602. [2021-10-13 17:44:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.557404326123128) internal successors, (1537), 601 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:59,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1537 transitions. [2021-10-13 17:44:59,073 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1537 transitions. Word has length 37 [2021-10-13 17:44:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:44:59,074 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1537 transitions. [2021-10-13 17:44:59,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:44:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1537 transitions. [2021-10-13 17:44:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:44:59,076 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:44:59,076 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:44:59,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 17:44:59,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:59,289 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:44:59,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:44:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash 979439517, now seen corresponding path program 19 times [2021-10-13 17:44:59,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:44:59,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042408566] [2021-10-13 17:44:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:44:59,292 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:44:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:44:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:44:59,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:44:59,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042408566] [2021-10-13 17:44:59,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042408566] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:44:59,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941022991] [2021-10-13 17:44:59,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 17:44:59,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:44:59,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:44:59,817 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:44:59,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 17:45:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:00,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-13 17:45:00,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:00,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-13 17:45:00,398 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:00,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:00,451 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:00,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:00,758 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:00,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:45:00,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941022991] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:00,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:45:00,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2021-10-13 17:45:00,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645289572] [2021-10-13 17:45:00,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 17:45:00,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:00,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 17:45:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:45:00,789 INFO L87 Difference]: Start difference. First operand 602 states and 1537 transitions. Second operand has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:04,048 INFO L93 Difference]: Finished difference Result 1503 states and 3731 transitions. [2021-10-13 17:45:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:45:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:04,053 INFO L225 Difference]: With dead ends: 1503 [2021-10-13 17:45:04,053 INFO L226 Difference]: Without dead ends: 1267 [2021-10-13 17:45:04,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 2007.0ms TimeCoverageRelationStatistics Valid=267, Invalid=1895, Unknown=0, NotChecked=0, Total=2162 [2021-10-13 17:45:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2021-10-13 17:45:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 507. [2021-10-13 17:45:04,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.6600790513833994) internal successors, (1346), 506 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1346 transitions. [2021-10-13 17:45:04,114 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1346 transitions. Word has length 37 [2021-10-13 17:45:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:04,115 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1346 transitions. [2021-10-13 17:45:04,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.7916666666666665) internal successors, (67), 24 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1346 transitions. [2021-10-13 17:45:04,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:04,120 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:04,120 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:04,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:04,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 17:45:04,341 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:04,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:04,342 INFO L82 PathProgramCache]: Analyzing trace with hash 16844503, now seen corresponding path program 20 times [2021-10-13 17:45:04,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:04,342 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699492105] [2021-10-13 17:45:04,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:04,342 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:04,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:04,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699492105] [2021-10-13 17:45:04,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699492105] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:04,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:45:04,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:45:04,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976769606] [2021-10-13 17:45:04,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:45:04,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:04,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:45:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:45:04,570 INFO L87 Difference]: Start difference. First operand 507 states and 1346 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:04,829 INFO L93 Difference]: Finished difference Result 993 states and 2590 transitions. [2021-10-13 17:45:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:45:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:04,836 INFO L225 Difference]: With dead ends: 993 [2021-10-13 17:45:04,836 INFO L226 Difference]: Without dead ends: 891 [2021-10-13 17:45:04,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 177.6ms TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-10-13 17:45:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-10-13 17:45:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 501. [2021-10-13 17:45:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 2.656) internal successors, (1328), 500 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 1328 transitions. [2021-10-13 17:45:04,868 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 1328 transitions. Word has length 37 [2021-10-13 17:45:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:04,868 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 1328 transitions. [2021-10-13 17:45:04,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:04,869 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 1328 transitions. [2021-10-13 17:45:04,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:04,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:04,871 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:04,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-13 17:45:04,872 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -271615307, now seen corresponding path program 21 times [2021-10-13 17:45:04,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:04,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114462090] [2021-10-13 17:45:04,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:04,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:05,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:05,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114462090] [2021-10-13 17:45:05,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114462090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:05,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:45:05,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:45:05,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854901853] [2021-10-13 17:45:05,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:45:05,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:45:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:45:05,117 INFO L87 Difference]: Start difference. First operand 501 states and 1328 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:05,276 INFO L93 Difference]: Finished difference Result 609 states and 1592 transitions. [2021-10-13 17:45:05,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 17:45:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:05,279 INFO L225 Difference]: With dead ends: 609 [2021-10-13 17:45:05,279 INFO L226 Difference]: Without dead ends: 495 [2021-10-13 17:45:05,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:45:05,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-10-13 17:45:05,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2021-10-13 17:45:05,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 2.651821862348178) internal successors, (1310), 494 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1310 transitions. [2021-10-13 17:45:05,291 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1310 transitions. Word has length 37 [2021-10-13 17:45:05,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:05,294 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 1310 transitions. [2021-10-13 17:45:05,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,294 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1310 transitions. [2021-10-13 17:45:05,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:05,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:05,296 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:05,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-13 17:45:05,297 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:05,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:05,297 INFO L82 PathProgramCache]: Analyzing trace with hash -477775017, now seen corresponding path program 22 times [2021-10-13 17:45:05,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:05,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128981232] [2021-10-13 17:45:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:05,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:05,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:05,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:05,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128981232] [2021-10-13 17:45:05,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128981232] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:05,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:45:05,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 17:45:05,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518122698] [2021-10-13 17:45:05,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 17:45:05,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:05,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 17:45:05,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 17:45:05,444 INFO L87 Difference]: Start difference. First operand 495 states and 1310 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:05,596 INFO L93 Difference]: Finished difference Result 323 states and 802 transitions. [2021-10-13 17:45:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 17:45:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:05,599 INFO L225 Difference]: With dead ends: 323 [2021-10-13 17:45:05,599 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 17:45:05,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 104.9ms TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-13 17:45:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 17:45:05,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-13 17:45:05,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 2.4906832298136647) internal successors, (802), 322 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 802 transitions. [2021-10-13 17:45:05,611 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 802 transitions. Word has length 37 [2021-10-13 17:45:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:05,612 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 802 transitions. [2021-10-13 17:45:05,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 802 transitions. [2021-10-13 17:45:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:05,618 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:05,618 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:05,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-13 17:45:05,619 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 297012657, now seen corresponding path program 23 times [2021-10-13 17:45:05,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:05,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145005603] [2021-10-13 17:45:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:05,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:05,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:05,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:05,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145005603] [2021-10-13 17:45:05,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145005603] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:05,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 17:45:05,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-13 17:45:05,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524872228] [2021-10-13 17:45:05,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:05,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-13 17:45:05,744 INFO L87 Difference]: Start difference. First operand 323 states and 802 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:05,859 INFO L93 Difference]: Finished difference Result 329 states and 808 transitions. [2021-10-13 17:45:05,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 17:45:05,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:05,861 INFO L225 Difference]: With dead ends: 329 [2021-10-13 17:45:05,861 INFO L226 Difference]: Without dead ends: 281 [2021-10-13 17:45:05,861 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-10-13 17:45:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-10-13 17:45:05,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-10-13 17:45:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.414285714285714) internal successors, (676), 280 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 676 transitions. [2021-10-13 17:45:05,868 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 676 transitions. Word has length 37 [2021-10-13 17:45:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:05,869 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 676 transitions. [2021-10-13 17:45:05,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 676 transitions. [2021-10-13 17:45:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:05,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:05,874 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:05,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-13 17:45:05,875 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:05,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:05,876 INFO L82 PathProgramCache]: Analyzing trace with hash -2130953475, now seen corresponding path program 24 times [2021-10-13 17:45:05,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:05,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82959304] [2021-10-13 17:45:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:05,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:05,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:06,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:06,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82959304] [2021-10-13 17:45:06,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82959304] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:06,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945352489] [2021-10-13 17:45:06,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 17:45:06,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:06,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:06,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 17:45:07,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 17:45:07,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:07,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 17:45:07,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:08,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:08,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:08,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:08,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945352489] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:08,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:09,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2021-10-13 17:45:09,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349779978] [2021-10-13 17:45:09,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:09,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:09,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:09,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:45:09,002 INFO L87 Difference]: Start difference. First operand 281 states and 676 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:09,822 INFO L93 Difference]: Finished difference Result 338 states and 781 transitions. [2021-10-13 17:45:09,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:45:09,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:09,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:09,823 INFO L225 Difference]: With dead ends: 338 [2021-10-13 17:45:09,823 INFO L226 Difference]: Without dead ends: 245 [2021-10-13 17:45:09,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1090.3ms TimeCoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:45:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-13 17:45:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-10-13 17:45:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 2.319672131147541) internal successors, (566), 244 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 566 transitions. [2021-10-13 17:45:09,833 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 566 transitions. Word has length 37 [2021-10-13 17:45:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:09,834 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 566 transitions. [2021-10-13 17:45:09,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 566 transitions. [2021-10-13 17:45:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:09,835 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:09,835 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:09,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-10-13 17:45:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-13 17:45:10,038 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:10,039 INFO L82 PathProgramCache]: Analyzing trace with hash -830008325, now seen corresponding path program 25 times [2021-10-13 17:45:10,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:10,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451290808] [2021-10-13 17:45:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:10,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:11,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:11,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:11,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451290808] [2021-10-13 17:45:11,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451290808] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:11,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496220872] [2021-10-13 17:45:11,368 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 17:45:11,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:11,380 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:11,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 17:45:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:11,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 17:45:11,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:12,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:12,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:45:12,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496220872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:12,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:45:12,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-10-13 17:45:12,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608971776] [2021-10-13 17:45:12,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 17:45:12,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:12,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 17:45:12,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:45:12,300 INFO L87 Difference]: Start difference. First operand 245 states and 566 transitions. Second operand has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:14,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:14,468 INFO L93 Difference]: Finished difference Result 685 states and 1522 transitions. [2021-10-13 17:45:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-13 17:45:14,469 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:14,471 INFO L225 Difference]: With dead ends: 685 [2021-10-13 17:45:14,471 INFO L226 Difference]: Without dead ends: 571 [2021-10-13 17:45:14,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2106.7ms TimeCoverageRelationStatistics Valid=224, Invalid=1498, Unknown=0, NotChecked=0, Total=1722 [2021-10-13 17:45:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-10-13 17:45:14,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 237. [2021-10-13 17:45:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 2.288135593220339) internal successors, (540), 236 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:14,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 540 transitions. [2021-10-13 17:45:14,496 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 540 transitions. Word has length 37 [2021-10-13 17:45:14,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:14,496 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 540 transitions. [2021-10-13 17:45:14,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0952380952380953) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:14,497 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 540 transitions. [2021-10-13 17:45:14,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:14,500 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:14,500 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:14,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:14,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-13 17:45:14,708 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:14,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:14,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1117189351, now seen corresponding path program 26 times [2021-10-13 17:45:14,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:14,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245448008] [2021-10-13 17:45:14,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:14,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:15,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:15,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:15,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245448008] [2021-10-13 17:45:15,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245448008] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:15,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845558747] [2021-10-13 17:45:15,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 17:45:15,471 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:15,472 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 17:45:15,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 17:45:15,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 17:45:15,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:16,200 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:16,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:16,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845558747] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:16,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2021-10-13 17:45:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581123703] [2021-10-13 17:45:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:45:16,263 INFO L87 Difference]: Start difference. First operand 237 states and 540 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:16,827 INFO L93 Difference]: Finished difference Result 318 states and 719 transitions. [2021-10-13 17:45:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:45:16,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:16,829 INFO L225 Difference]: With dead ends: 318 [2021-10-13 17:45:16,829 INFO L226 Difference]: Without dead ends: 269 [2021-10-13 17:45:16,832 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 663.2ms TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:45:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-10-13 17:45:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 249. [2021-10-13 17:45:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 2.2943548387096775) internal successors, (569), 248 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 569 transitions. [2021-10-13 17:45:16,854 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 569 transitions. Word has length 37 [2021-10-13 17:45:16,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:16,855 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 569 transitions. [2021-10-13 17:45:16,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 569 transitions. [2021-10-13 17:45:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:16,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:16,858 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:16,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:17,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-13 17:45:17,071 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:17,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:17,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1324866045, now seen corresponding path program 27 times [2021-10-13 17:45:17,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:17,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094193913] [2021-10-13 17:45:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:17,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:18,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:18,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094193913] [2021-10-13 17:45:18,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094193913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:18,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821890985] [2021-10-13 17:45:18,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 17:45:18,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:18,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:18,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:18,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 17:45:18,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 17:45:18,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:18,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 17:45:18,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:18,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:18,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:18,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821890985] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:18,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:18,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 20 [2021-10-13 17:45:18,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112160272] [2021-10-13 17:45:18,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:18,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:18,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:18,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-10-13 17:45:18,711 INFO L87 Difference]: Start difference. First operand 249 states and 569 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:18,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:18,997 INFO L93 Difference]: Finished difference Result 318 states and 730 transitions. [2021-10-13 17:45:18,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:45:18,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:18,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:18,999 INFO L225 Difference]: With dead ends: 318 [2021-10-13 17:45:18,999 INFO L226 Difference]: Without dead ends: 294 [2021-10-13 17:45:19,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 590.9ms TimeCoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2021-10-13 17:45:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-10-13 17:45:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-10-13 17:45:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.3515358361774745) internal successors, (689), 293 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 689 transitions. [2021-10-13 17:45:19,010 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 689 transitions. Word has length 37 [2021-10-13 17:45:19,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:19,010 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 689 transitions. [2021-10-13 17:45:19,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 689 transitions. [2021-10-13 17:45:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:19,012 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:19,013 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:19,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-10-13 17:45:19,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-13 17:45:19,226 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:19,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:19,227 INFO L82 PathProgramCache]: Analyzing trace with hash -236185169, now seen corresponding path program 28 times [2021-10-13 17:45:19,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:19,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325146126] [2021-10-13 17:45:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:19,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:20,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:20,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325146126] [2021-10-13 17:45:20,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325146126] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:20,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260701537] [2021-10-13 17:45:20,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 17:45:20,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:20,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:20,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:20,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 17:45:20,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 17:45:20,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:20,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 17:45:20,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:21,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:21,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:21,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260701537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:21,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:21,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2021-10-13 17:45:21,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374908697] [2021-10-13 17:45:21,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:21,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:45:21,085 INFO L87 Difference]: Start difference. First operand 294 states and 689 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:21,392 INFO L93 Difference]: Finished difference Result 307 states and 704 transitions. [2021-10-13 17:45:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:45:21,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:21,394 INFO L225 Difference]: With dead ends: 307 [2021-10-13 17:45:21,394 INFO L226 Difference]: Without dead ends: 291 [2021-10-13 17:45:21,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 473.9ms TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:45:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-10-13 17:45:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2021-10-13 17:45:21,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 2.3517241379310345) internal successors, (682), 290 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 682 transitions. [2021-10-13 17:45:21,428 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 682 transitions. Word has length 37 [2021-10-13 17:45:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:21,428 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 682 transitions. [2021-10-13 17:45:21,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 682 transitions. [2021-10-13 17:45:21,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:21,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:21,430 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:21,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-10-13 17:45:21,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:21,645 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash -244545763, now seen corresponding path program 29 times [2021-10-13 17:45:21,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:21,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567339403] [2021-10-13 17:45:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:21,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:22,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:22,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567339403] [2021-10-13 17:45:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567339403] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:22,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131320878] [2021-10-13 17:45:22,882 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 17:45:22,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:22,884 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:22,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 17:45:23,880 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 17:45:23,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-13 17:45:23,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:24,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:24,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131320878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:24,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:24,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 21 [2021-10-13 17:45:24,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531322309] [2021-10-13 17:45:24,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:24,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:24,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2021-10-13 17:45:24,293 INFO L87 Difference]: Start difference. First operand 291 states and 682 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:24,921 INFO L93 Difference]: Finished difference Result 306 states and 700 transitions. [2021-10-13 17:45:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 17:45:24,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:24,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:24,922 INFO L225 Difference]: With dead ends: 306 [2021-10-13 17:45:24,922 INFO L226 Difference]: Without dead ends: 288 [2021-10-13 17:45:24,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 929.1ms TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-10-13 17:45:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-13 17:45:24,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-10-13 17:45:24,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.35191637630662) internal successors, (675), 287 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:24,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 675 transitions. [2021-10-13 17:45:24,944 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 675 transitions. Word has length 37 [2021-10-13 17:45:24,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:24,947 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 675 transitions. [2021-10-13 17:45:24,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 675 transitions. [2021-10-13 17:45:24,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:24,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:24,951 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:25,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:25,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-13 17:45:25,165 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:25,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:25,166 INFO L82 PathProgramCache]: Analyzing trace with hash -801055593, now seen corresponding path program 30 times [2021-10-13 17:45:25,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:25,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690782049] [2021-10-13 17:45:25,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:25,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:25,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:25,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690782049] [2021-10-13 17:45:25,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690782049] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:25,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348062335] [2021-10-13 17:45:25,966 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 17:45:25,966 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:25,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:25,971 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:25,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 17:45:26,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 17:45:26,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:26,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 17:45:26,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:27,176 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:27,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:27,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348062335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:27,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:27,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2021-10-13 17:45:27,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404921726] [2021-10-13 17:45:27,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 17:45:27,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:27,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 17:45:27,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2021-10-13 17:45:27,216 INFO L87 Difference]: Start difference. First operand 288 states and 675 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:27,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:27,813 INFO L93 Difference]: Finished difference Result 329 states and 744 transitions. [2021-10-13 17:45:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:45:27,814 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:27,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:27,815 INFO L225 Difference]: With dead ends: 329 [2021-10-13 17:45:27,815 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 17:45:27,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 537.0ms TimeCoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2021-10-13 17:45:27,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 17:45:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2021-10-13 17:45:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.1705882352941175) internal successors, (369), 170 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 369 transitions. [2021-10-13 17:45:27,825 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 369 transitions. Word has length 37 [2021-10-13 17:45:27,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:27,826 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 369 transitions. [2021-10-13 17:45:27,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:27,826 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 369 transitions. [2021-10-13 17:45:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:27,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:27,827 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:27,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:28,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:28,031 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash -295517607, now seen corresponding path program 31 times [2021-10-13 17:45:28,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:28,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878304763] [2021-10-13 17:45:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:28,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:29,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:29,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878304763] [2021-10-13 17:45:29,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878304763] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:29,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813169429] [2021-10-13 17:45:29,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 17:45:29,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:29,651 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:29,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 17:45:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:30,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 17:45:30,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:30,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 17:45:30,758 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:30,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:31,417 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:31,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:45:31,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813169429] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:31,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:45:31,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-10-13 17:45:31,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199921287] [2021-10-13 17:45:31,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 17:45:31,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:31,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 17:45:31,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:45:31,443 INFO L87 Difference]: Start difference. First operand 171 states and 369 transitions. Second operand has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:34,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:34,139 INFO L93 Difference]: Finished difference Result 421 states and 873 transitions. [2021-10-13 17:45:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 17:45:34,140 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:34,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:34,141 INFO L225 Difference]: With dead ends: 421 [2021-10-13 17:45:34,141 INFO L226 Difference]: Without dead ends: 323 [2021-10-13 17:45:34,143 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 3133.6ms TimeCoverageRelationStatistics Valid=275, Invalid=1981, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 17:45:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-13 17:45:34,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 163. [2021-10-13 17:45:34,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.117283950617284) internal successors, (343), 162 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 343 transitions. [2021-10-13 17:45:34,149 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 343 transitions. Word has length 37 [2021-10-13 17:45:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:34,150 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 343 transitions. [2021-10-13 17:45:34,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 343 transitions. [2021-10-13 17:45:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:34,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:34,152 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:34,195 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-13 17:45:34,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-10-13 17:45:34,368 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash -573334117, now seen corresponding path program 32 times [2021-10-13 17:45:34,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:34,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598671690] [2021-10-13 17:45:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:34,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:35,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:35,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598671690] [2021-10-13 17:45:35,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598671690] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:35,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54871839] [2021-10-13 17:45:35,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 17:45:35,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:35,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:35,664 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:35,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 17:45:36,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 17:45:36,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:36,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 17:45:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:36,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 53 [2021-10-13 17:45:36,481 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:36,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:36,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:36,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54871839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:36,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:36,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 22 [2021-10-13 17:45:36,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509270345] [2021-10-13 17:45:36,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:45:36,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:45:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:45:36,663 INFO L87 Difference]: Start difference. First operand 163 states and 343 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:37,016 INFO L93 Difference]: Finished difference Result 174 states and 355 transitions. [2021-10-13 17:45:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 17:45:37,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:37,017 INFO L225 Difference]: With dead ends: 174 [2021-10-13 17:45:37,017 INFO L226 Difference]: Without dead ends: 147 [2021-10-13 17:45:37,018 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 702.9ms TimeCoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-10-13 17:45:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-13 17:45:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-10-13 17:45:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.1095890410958904) internal successors, (308), 146 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 308 transitions. [2021-10-13 17:45:37,022 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 308 transitions. Word has length 37 [2021-10-13 17:45:37,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:37,023 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 308 transitions. [2021-10-13 17:45:37,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:37,023 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 308 transitions. [2021-10-13 17:45:37,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:37,024 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:37,024 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:37,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:37,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-13 17:45:37,235 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:37,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:37,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2134385331, now seen corresponding path program 33 times [2021-10-13 17:45:37,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:37,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709225535] [2021-10-13 17:45:37,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:37,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:39,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:39,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709225535] [2021-10-13 17:45:39,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709225535] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:39,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125501730] [2021-10-13 17:45:39,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 17:45:39,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:39,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:39,022 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:39,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 17:45:39,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 17:45:39,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:39,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 17:45:39,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:39,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 137 [2021-10-13 17:45:39,872 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:39,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:39,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:39,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:40,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125501730] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:40,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:40,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-10-13 17:45:40,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530296601] [2021-10-13 17:45:40,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:45:40,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:45:40,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:45:40,030 INFO L87 Difference]: Start difference. First operand 147 states and 308 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:40,401 INFO L93 Difference]: Finished difference Result 160 states and 323 transitions. [2021-10-13 17:45:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:45:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:40,402 INFO L225 Difference]: With dead ends: 160 [2021-10-13 17:45:40,403 INFO L226 Difference]: Without dead ends: 143 [2021-10-13 17:45:40,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1219.3ms TimeCoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:45:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-10-13 17:45:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-10-13 17:45:40,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.1056338028169015) internal successors, (299), 142 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 299 transitions. [2021-10-13 17:45:40,407 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 299 transitions. Word has length 37 [2021-10-13 17:45:40,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:40,408 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 299 transitions. [2021-10-13 17:45:40,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 299 transitions. [2021-10-13 17:45:40,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:40,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:40,409 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:40,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:40,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:40,621 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:40,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2142745925, now seen corresponding path program 34 times [2021-10-13 17:45:40,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:40,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499460186] [2021-10-13 17:45:40,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:40,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:41,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:41,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499460186] [2021-10-13 17:45:41,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499460186] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:41,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108574541] [2021-10-13 17:45:41,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 17:45:41,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:41,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:41,414 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:41,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-13 17:45:42,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 17:45:42,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:42,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-13 17:45:42,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:42,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 558 treesize of output 542 [2021-10-13 17:45:42,362 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:42,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:42,501 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:42,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 17:45:42,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108574541] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 17:45:42,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 17:45:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2021-10-13 17:45:42,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269382141] [2021-10-13 17:45:42,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 17:45:42,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 17:45:42,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-10-13 17:45:42,528 INFO L87 Difference]: Start difference. First operand 143 states and 299 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:43,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:43,019 INFO L93 Difference]: Finished difference Result 158 states and 317 transitions. [2021-10-13 17:45:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 17:45:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:43,020 INFO L225 Difference]: With dead ends: 158 [2021-10-13 17:45:43,020 INFO L226 Difference]: Without dead ends: 139 [2021-10-13 17:45:43,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 773.6ms TimeCoverageRelationStatistics Valid=122, Invalid=934, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 17:45:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-13 17:45:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2021-10-13 17:45:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 2.101449275362319) internal successors, (290), 138 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 290 transitions. [2021-10-13 17:45:43,032 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 290 transitions. Word has length 37 [2021-10-13 17:45:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:43,032 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 290 transitions. [2021-10-13 17:45:43,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:43,034 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 290 transitions. [2021-10-13 17:45:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 17:45:43,034 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 17:45:43,035 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 17:45:43,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:43,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-13 17:45:43,250 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-13 17:45:43,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 17:45:43,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1595711541, now seen corresponding path program 35 times [2021-10-13 17:45:43,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 17:45:43,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060183352] [2021-10-13 17:45:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 17:45:43,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 17:45:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 17:45:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 17:45:44,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 17:45:44,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060183352] [2021-10-13 17:45:44,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060183352] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:44,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453272486] [2021-10-13 17:45:44,274 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 17:45:44,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 17:45:44,276 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 17:45:44,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-13 17:45:44,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 17:45:44,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 17:45:44,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 17:45:44,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 17:45:44,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 83 [2021-10-13 17:45:45,110 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-10-13 17:45:45,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 17:45:45,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 17:45:45,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2021-10-13 17:45:45,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 17:45:45,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453272486] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 17:45:45,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 17:45:45,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-10-13 17:45:45,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134771064] [2021-10-13 17:45:45,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-13 17:45:45,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 17:45:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-13 17:45:45,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-10-13 17:45:45,353 INFO L87 Difference]: Start difference. First operand 139 states and 290 transitions. Second operand has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 17:45:46,853 INFO L93 Difference]: Finished difference Result 273 states and 575 transitions. [2021-10-13 17:45:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 17:45:46,854 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-13 17:45:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 17:45:46,855 INFO L225 Difference]: With dead ends: 273 [2021-10-13 17:45:46,855 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 17:45:46,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1497.7ms TimeCoverageRelationStatistics Valid=239, Invalid=1653, Unknown=0, NotChecked=0, Total=1892 [2021-10-13 17:45:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 17:45:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 17:45:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 17:45:46,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-10-13 17:45:46,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 17:45:46,857 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 17:45:46,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 24 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 17:45:46,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 17:45:46,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 17:45:46,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 17:45:46,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 17:45:46,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 17:45:46,863 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 17:45:46,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-13 17:45:47,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 17:45:47,084 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 17:45:47,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 17:45:47,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 05:45:47 BasicIcfg [2021-10-13 17:45:47,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 17:45:47,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 17:45:47,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 17:45:47,095 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 17:45:47,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 05:44:09" (3/4) ... [2021-10-13 17:45:47,112 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 17:45:47,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-13 17:45:47,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-13 17:45:47,141 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-13 17:45:47,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-13 17:45:47,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 17:45:47,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:45:47,159 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 17:45:47,260 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-13 17:45:47,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 17:45:47,262 INFO L168 Benchmark]: Toolchain (without parser) took 98883.30 ms. Allocated memory was 39.8 MB in the beginning and 283.1 MB in the end (delta: 243.3 MB). Free memory was 18.8 MB in the beginning and 96.7 MB in the end (delta: -77.9 MB). Peak memory consumption was 165.9 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,266 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 19.1 MB in the beginning and 19.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 17:45:47,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.33 ms. Allocated memory was 39.8 MB in the beginning and 52.4 MB in the end (delta: 12.6 MB). Free memory was 18.5 MB in the beginning and 33.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 99.35 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 31.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,268 INFO L168 Benchmark]: Boogie Preprocessor took 81.72 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 30.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 17:45:47,269 INFO L168 Benchmark]: RCFGBuilder took 805.78 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 24.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,269 INFO L168 Benchmark]: TraceAbstraction took 97327.57 ms. Allocated memory was 52.4 MB in the beginning and 283.1 MB in the end (delta: 230.7 MB). Free memory was 24.5 MB in the beginning and 100.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 157.0 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,274 INFO L168 Benchmark]: Witness Printer took 166.58 ms. Allocated memory is still 283.1 MB. Free memory was 100.7 MB in the beginning and 96.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 17:45:47,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 19.1 MB in the beginning and 19.0 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.33 ms. Allocated memory was 39.8 MB in the beginning and 52.4 MB in the end (delta: 12.6 MB). Free memory was 18.5 MB in the beginning and 33.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 99.35 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 31.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.72 ms. Allocated memory is still 52.4 MB. Free memory was 31.6 MB in the beginning and 30.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 805.78 ms. Allocated memory is still 52.4 MB. Free memory was 29.9 MB in the beginning and 24.9 MB in the end (delta: 5.0 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97327.57 ms. Allocated memory was 52.4 MB in the beginning and 283.1 MB in the end (delta: 230.7 MB). Free memory was 24.5 MB in the beginning and 100.7 MB in the end (delta: -76.1 MB). Peak memory consumption was 157.0 MB. Max. memory is 16.1 GB. * Witness Printer took 166.58 ms. Allocated memory is still 283.1 MB. Free memory was 100.7 MB in the beginning and 96.7 MB in the end (delta: 4.0 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: 10094.2ms, 209 PlacesBefore, 49 PlacesAfterwards, 213 TransitionsBefore, 44 TransitionsAfterwards, 5124 CoEnabledTransitionPairs, 8 FixpointIterations, 107 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 25 ConcurrentYvCompositions, 9 ChoiceCompositions, 226 TotalNumberOfCompositions, 12820 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8042, positive: 7729, positive conditional: 0, positive unconditional: 7729, negative: 313, negative conditional: 0, negative unconditional: 313, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 4191, positive: 4110, positive conditional: 0, positive unconditional: 4110, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 4191, positive: 4065, positive conditional: 0, positive unconditional: 4065, negative: 126, negative conditional: 0, negative unconditional: 126, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 126, positive: 45, positive conditional: 0, positive unconditional: 45, negative: 81, negative conditional: 0, negative unconditional: 81, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 180, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 149, negative conditional: 0, negative unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 8042, positive: 3619, positive conditional: 0, positive unconditional: 3619, negative: 232, negative conditional: 0, negative unconditional: 232, unknown: 4191, unknown conditional: 0, unknown unconditional: 4191] , Statistics on independence cache: Total cache size (in pairs): 370, Positive cache size: 342, Positive conditional cache size: 0, Positive unconditional cache size: 342, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28 - 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: 115]: 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 7 procedures, 271 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 97029.3ms, OverallIterations: 37, TraceHistogramMax: 2, EmptinessCheckTime: 144.6ms, AutomataDifference: 32593.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10235.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2332 SDtfs, 7826 SDslu, 14278 SDs, 0 SdLazy, 12444 SolverSat, 828 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11390.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1717 GetRequests, 742 SyntacticMatches, 1 SemanticMatches, 974 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5679 ImplicationChecksByTransitivity, 30277.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1528occurred in iteration=5, InterpolantAutomatonStates: 564, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1156.1ms AutomataMinimizationTime, 37 MinimizatonAttempts, 7835 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 580.0ms SsaConstructionTime, 4137.9ms SatisfiabilityAnalysisTime, 33704.9ms InterpolantComputationTime, 2266 NumberOfCodeBlocks, 2236 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 2204 ConstructedInterpolants, 108 QuantifiedInterpolants, 32756 SizeOfPredicates, 409 NumberOfNonLiveVariables, 6201 ConjunctsInSsa, 705 ConjunctsInUnsatCore, 62 InterpolantComputations, 29 PerfectInterpolantSequences, 83/164 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 17:45:47,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...