./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e0d5536f9cd1f3a5d711f95a0369e25308fe790 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:00:51,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:00:51,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:00:51,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:00:51,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:00:51,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:00:51,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:00:51,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:00:51,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:00:51,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:00:51,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:00:51,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:00:51,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:00:51,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:00:51,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:00:51,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:00:51,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:00:51,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:00:51,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:00:51,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:00:51,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:00:51,752 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:00:51,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:00:51,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:00:51,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:00:51,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:00:51,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:00:51,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:00:51,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:00:51,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:00:51,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:00:51,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:00:51,778 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:00:51,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:00:51,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:00:51,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:00:51,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:00:51,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:00:51,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:00:51,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:00:51,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:00:51,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 21:00:51,835 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:00:51,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:00:51,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:00:51,838 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:00:51,838 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:00:51,838 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:00:51,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:00:51,839 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 21:00:51,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:00:51,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:00:51,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:00:51,841 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 21:00:51,841 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 21:00:51,842 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 21:00:51,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:00:51,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 21:00:51,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:00:51,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:00:51,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:00:51,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:00:51,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:00:51,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:00:51,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:00:51,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:00:51,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:00:51,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:00:51,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:00:51,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:00:51,846 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:/tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e0d5536f9cd1f3a5d711f95a0369e25308fe790 [2020-11-29 21:00:52,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:00:52,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:00:52,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:00:52,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:00:52,294 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:00:52,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-11-29 21:00:52,429 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/data/6c449a352/2c204040990b4fa7a13e5c214b9aaf42/FLAG3d187bf8c [2020-11-29 21:00:53,050 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:00:53,051 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-1.c [2020-11-29 21:00:53,069 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/data/6c449a352/2c204040990b4fa7a13e5c214b9aaf42/FLAG3d187bf8c [2020-11-29 21:00:53,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/data/6c449a352/2c204040990b4fa7a13e5c214b9aaf42 [2020-11-29 21:00:53,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:00:53,346 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 21:00:53,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:00:53,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:00:53,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:00:53,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:00:53" (1/1) ... [2020-11-29 21:00:53,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@454c83df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:53, skipping insertion in model container [2020-11-29 21:00:53,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:00:53" (1/1) ... [2020-11-29 21:00:53,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:00:53,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:00:53,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:00:53,960 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:00:54,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:00:54,111 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:00:54,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54 WrapperNode [2020-11-29 21:00:54,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:00:54,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:00:54,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:00:54,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:00:54,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... [2020-11-29 21:00:54,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:00:54,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:00:54,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:00:54,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:00:54,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:00:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 21:00:54,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:00:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 21:00:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-11-29 21:00:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-11-29 21:00:54,330 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-11-29 21:00:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 21:00:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-11-29 21:00:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-11-29 21:00:54,331 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-11-29 21:00:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-11-29 21:00:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-11-29 21:00:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-11-29 21:00:54,332 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-11-29 21:00:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-11-29 21:00:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-11-29 21:00:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-11-29 21:00:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-11-29 21:00:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-11-29 21:00:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 21:00:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 21:00:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 21:00:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:00:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-11-29 21:00:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 21:00:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-11-29 21:00:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-11-29 21:00:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-11-29 21:00:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-11-29 21:00:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-11-29 21:00:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-11-29 21:00:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-11-29 21:00:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-11-29 21:00:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-11-29 21:00:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-11-29 21:00:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-11-29 21:00:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-11-29 21:00:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-11-29 21:00:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-11-29 21:00:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-11-29 21:00:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 21:00:54,338 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-11-29 21:00:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 21:00:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:00:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:00:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 21:00:54,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 21:00:54,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 21:00:54,792 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,007 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-11-29 21:00:55,007 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-11-29 21:00:55,015 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,120 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-11-29 21:00:55,121 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-11-29 21:00:55,467 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,508 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-11-29 21:00:55,508 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-11-29 21:00:55,521 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,746 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-11-29 21:00:55,747 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-11-29 21:00:55,753 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,804 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-11-29 21:00:55,804 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-11-29 21:00:55,814 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 21:00:55,883 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-11-29 21:00:55,883 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-11-29 21:00:55,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:00:55,984 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-29 21:00:55,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:55 BoogieIcfgContainer [2020-11-29 21:00:55,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:00:55,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:00:55,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:00:55,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:00:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:00:53" (1/3) ... [2020-11-29 21:00:55,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e700280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:55, skipping insertion in model container [2020-11-29 21:00:55,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:00:54" (2/3) ... [2020-11-29 21:00:56,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e700280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:00:55, skipping insertion in model container [2020-11-29 21:00:56,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:55" (3/3) ... [2020-11-29 21:00:56,002 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-1.c [2020-11-29 21:00:56,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:00:56,026 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 21:00:56,041 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 21:00:56,078 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:00:56,078 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 21:00:56,079 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:00:56,079 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:00:56,079 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:00:56,079 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:00:56,079 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:00:56,079 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:00:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states. [2020-11-29 21:00:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 21:00:56,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:56,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:56,130 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:00:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:56,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1218581619, now seen corresponding path program 1 times [2020-11-29 21:00:56,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:56,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831275635] [2020-11-29 21:00:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,749 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:00:56,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:00:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:00:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:56,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:56,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831275635] [2020-11-29 21:00:56,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:56,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 21:00:56,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970779220] [2020-11-29 21:00:56,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:00:56,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:56,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:00:56,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:56,940 INFO L87 Difference]: Start difference. First operand 244 states. Second operand 4 states. [2020-11-29 21:00:57,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:57,928 INFO L93 Difference]: Finished difference Result 266 states and 385 transitions. [2020-11-29 21:00:57,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:00:57,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-11-29 21:00:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:57,947 INFO L225 Difference]: With dead ends: 266 [2020-11-29 21:00:57,947 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 21:00:57,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:00:57,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 21:00:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 229. [2020-11-29 21:00:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-29 21:00:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2020-11-29 21:00:58,024 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 15 [2020-11-29 21:00:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:58,025 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2020-11-29 21:00:58,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:00:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2020-11-29 21:00:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:00:58,026 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:58,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:58,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:00:58,027 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:00:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:58,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1146815466, now seen corresponding path program 1 times [2020-11-29 21:00:58,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:58,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116019687] [2020-11-29 21:00:58,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:58,332 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:00:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:00:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:58,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:00:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:00:58,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:00:58,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116019687] [2020-11-29 21:00:58,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:00:58,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 21:00:58,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354933306] [2020-11-29 21:00:58,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:00:58,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:00:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:00:58,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:58,467 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand 5 states. [2020-11-29 21:00:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:00:59,858 INFO L93 Difference]: Finished difference Result 257 states and 364 transitions. [2020-11-29 21:00:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:00:59,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-29 21:00:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:00:59,862 INFO L225 Difference]: With dead ends: 257 [2020-11-29 21:00:59,862 INFO L226 Difference]: Without dead ends: 257 [2020-11-29 21:00:59,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:00:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-11-29 21:00:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 229. [2020-11-29 21:00:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-11-29 21:00:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 323 transitions. [2020-11-29 21:00:59,910 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 323 transitions. Word has length 21 [2020-11-29 21:00:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:00:59,911 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 323 transitions. [2020-11-29 21:00:59,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:00:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 323 transitions. [2020-11-29 21:00:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 21:00:59,914 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:00:59,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:00:59,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:00:59,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:00:59,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:00:59,916 INFO L82 PathProgramCache]: Analyzing trace with hash 533223039, now seen corresponding path program 1 times [2020-11-29 21:00:59,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:00:59,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243616863] [2020-11-29 21:00:59,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:00:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:00,174 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:00,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:00,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:00,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:00,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243616863] [2020-11-29 21:01:00,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:00,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:01:00,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89152982] [2020-11-29 21:01:00,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:01:00,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:00,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:01:00,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:01:00,334 INFO L87 Difference]: Start difference. First operand 229 states and 323 transitions. Second operand 6 states. [2020-11-29 21:01:00,501 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-29 21:01:02,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:02,317 INFO L93 Difference]: Finished difference Result 346 states and 472 transitions. [2020-11-29 21:01:02,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:01:02,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-11-29 21:01:02,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:02,322 INFO L225 Difference]: With dead ends: 346 [2020-11-29 21:01:02,322 INFO L226 Difference]: Without dead ends: 345 [2020-11-29 21:01:02,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-11-29 21:01:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 302. [2020-11-29 21:01:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-11-29 21:01:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 412 transitions. [2020-11-29 21:01:02,358 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 412 transitions. Word has length 29 [2020-11-29 21:01:02,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:02,358 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 412 transitions. [2020-11-29 21:01:02,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:01:02,358 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 412 transitions. [2020-11-29 21:01:02,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 21:01:02,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:02,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:02,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 21:01:02,361 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:02,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:02,362 INFO L82 PathProgramCache]: Analyzing trace with hash -339825698, now seen corresponding path program 1 times [2020-11-29 21:01:02,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:02,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779777180] [2020-11-29 21:01:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:02,622 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:02,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:02,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779777180] [2020-11-29 21:01:02,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:02,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:01:02,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76935148] [2020-11-29 21:01:02,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:01:02,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:02,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:01:02,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:01:02,748 INFO L87 Difference]: Start difference. First operand 302 states and 412 transitions. Second operand 6 states. [2020-11-29 21:01:02,899 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 21:01:04,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:04,068 INFO L93 Difference]: Finished difference Result 364 states and 488 transitions. [2020-11-29 21:01:04,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:01:04,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-11-29 21:01:04,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:04,072 INFO L225 Difference]: With dead ends: 364 [2020-11-29 21:01:04,073 INFO L226 Difference]: Without dead ends: 364 [2020-11-29 21:01:04,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-11-29 21:01:04,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 342. [2020-11-29 21:01:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2020-11-29 21:01:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 463 transitions. [2020-11-29 21:01:04,120 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 463 transitions. Word has length 29 [2020-11-29 21:01:04,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:04,121 INFO L481 AbstractCegarLoop]: Abstraction has 342 states and 463 transitions. [2020-11-29 21:01:04,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:01:04,121 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 463 transitions. [2020-11-29 21:01:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 21:01:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:04,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:04,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 21:01:04,125 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash -504962935, now seen corresponding path program 1 times [2020-11-29 21:01:04,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:04,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335055652] [2020-11-29 21:01:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:04,364 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:04,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:04,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:04,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335055652] [2020-11-29 21:01:04,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:04,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 21:01:04,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266904167] [2020-11-29 21:01:04,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:01:04,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:04,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:01:04,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:01:04,474 INFO L87 Difference]: Start difference. First operand 342 states and 463 transitions. Second operand 6 states. [2020-11-29 21:01:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:05,570 INFO L93 Difference]: Finished difference Result 341 states and 460 transitions. [2020-11-29 21:01:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:01:05,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-11-29 21:01:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:05,574 INFO L225 Difference]: With dead ends: 341 [2020-11-29 21:01:05,574 INFO L226 Difference]: Without dead ends: 341 [2020-11-29 21:01:05,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:01:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-11-29 21:01:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2020-11-29 21:01:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-11-29 21:01:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 460 transitions. [2020-11-29 21:01:05,606 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 460 transitions. Word has length 39 [2020-11-29 21:01:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:05,607 INFO L481 AbstractCegarLoop]: Abstraction has 341 states and 460 transitions. [2020-11-29 21:01:05,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:01:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 460 transitions. [2020-11-29 21:01:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-29 21:01:05,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:05,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:05,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 21:01:05,625 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:05,626 INFO L82 PathProgramCache]: Analyzing trace with hash -164117486, now seen corresponding path program 1 times [2020-11-29 21:01:05,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:05,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980177924] [2020-11-29 21:01:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:05,834 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:05,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980177924] [2020-11-29 21:01:05,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:05,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:01:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958474348] [2020-11-29 21:01:05,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:01:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:01:05,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:05,996 INFO L87 Difference]: Start difference. First operand 341 states and 460 transitions. Second operand 8 states. [2020-11-29 21:01:06,161 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 21:01:07,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:07,585 INFO L93 Difference]: Finished difference Result 321 states and 425 transitions. [2020-11-29 21:01:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:01:07,585 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2020-11-29 21:01:07,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:07,588 INFO L225 Difference]: With dead ends: 321 [2020-11-29 21:01:07,588 INFO L226 Difference]: Without dead ends: 321 [2020-11-29 21:01:07,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:07,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-11-29 21:01:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 302. [2020-11-29 21:01:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-11-29 21:01:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 403 transitions. [2020-11-29 21:01:07,604 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 403 transitions. Word has length 47 [2020-11-29 21:01:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:07,605 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 403 transitions. [2020-11-29 21:01:07,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:01:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 403 transitions. [2020-11-29 21:01:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 21:01:07,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:07,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:07,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 21:01:07,608 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:07,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1322033219, now seen corresponding path program 1 times [2020-11-29 21:01:07,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:07,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785855998] [2020-11-29 21:01:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:07,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:08,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 21:01:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:08,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 21:01:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:08,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785855998] [2020-11-29 21:01:08,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:08,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:08,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714653782] [2020-11-29 21:01:08,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:08,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:08,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:08,200 INFO L87 Difference]: Start difference. First operand 302 states and 403 transitions. Second operand 12 states. [2020-11-29 21:01:08,373 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 21:01:08,528 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-29 21:01:09,642 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-11-29 21:01:09,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:09,834 INFO L93 Difference]: Finished difference Result 324 states and 427 transitions. [2020-11-29 21:01:09,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:01:09,835 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-11-29 21:01:09,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:09,838 INFO L225 Difference]: With dead ends: 324 [2020-11-29 21:01:09,839 INFO L226 Difference]: Without dead ends: 324 [2020-11-29 21:01:09,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:01:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-29 21:01:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 316. [2020-11-29 21:01:09,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-11-29 21:01:09,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 419 transitions. [2020-11-29 21:01:09,855 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 419 transitions. Word has length 46 [2020-11-29 21:01:09,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:09,856 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 419 transitions. [2020-11-29 21:01:09,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:09,856 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 419 transitions. [2020-11-29 21:01:09,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-29 21:01:09,858 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:09,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:09,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 21:01:09,859 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:09,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash -840477701, now seen corresponding path program 1 times [2020-11-29 21:01:09,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:09,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932295313] [2020-11-29 21:01:09,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 21:01:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 21:01:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:10,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932295313] [2020-11-29 21:01:10,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:10,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:10,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528193140] [2020-11-29 21:01:10,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:10,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:10,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:10,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:10,395 INFO L87 Difference]: Start difference. First operand 316 states and 419 transitions. Second operand 12 states. [2020-11-29 21:01:10,543 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 21:01:12,047 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-11-29 21:01:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:12,371 INFO L93 Difference]: Finished difference Result 324 states and 426 transitions. [2020-11-29 21:01:12,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:01:12,371 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-11-29 21:01:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:12,375 INFO L225 Difference]: With dead ends: 324 [2020-11-29 21:01:12,375 INFO L226 Difference]: Without dead ends: 324 [2020-11-29 21:01:12,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:01:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-11-29 21:01:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 317. [2020-11-29 21:01:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-11-29 21:01:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 420 transitions. [2020-11-29 21:01:12,394 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 420 transitions. Word has length 47 [2020-11-29 21:01:12,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:12,395 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 420 transitions. [2020-11-29 21:01:12,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:12,395 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 420 transitions. [2020-11-29 21:01:12,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 21:01:12,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:12,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:12,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 21:01:12,398 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:12,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:12,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1756698701, now seen corresponding path program 1 times [2020-11-29 21:01:12,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:12,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321733634] [2020-11-29 21:01:12,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-11-29 21:01:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-29 21:01:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:12,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321733634] [2020-11-29 21:01:12,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:12,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:01:12,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150447206] [2020-11-29 21:01:12,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:01:12,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:12,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:01:12,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:12,740 INFO L87 Difference]: Start difference. First operand 317 states and 420 transitions. Second operand 8 states. [2020-11-29 21:01:12,917 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-29 21:01:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:13,835 INFO L93 Difference]: Finished difference Result 311 states and 409 transitions. [2020-11-29 21:01:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:13,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2020-11-29 21:01:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:13,837 INFO L225 Difference]: With dead ends: 311 [2020-11-29 21:01:13,837 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 21:01:13,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:13,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 21:01:13,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-11-29 21:01:13,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-11-29 21:01:13,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-11-29 21:01:13,842 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 48 [2020-11-29 21:01:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:13,842 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-11-29 21:01:13,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:01:13,842 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-11-29 21:01:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-29 21:01:13,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:13,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:13,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 21:01:13,843 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:13,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1076219426, now seen corresponding path program 1 times [2020-11-29 21:01:13,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:13,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113244685] [2020-11-29 21:01:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,018 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-29 21:01:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-29 21:01:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:14,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113244685] [2020-11-29 21:01:14,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:14,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:01:14,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025237918] [2020-11-29 21:01:14,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:01:14,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:14,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:01:14,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:14,203 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 8 states. [2020-11-29 21:01:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:14,721 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-11-29 21:01:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:14,721 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-11-29 21:01:14,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:14,723 INFO L225 Difference]: With dead ends: 101 [2020-11-29 21:01:14,723 INFO L226 Difference]: Without dead ends: 101 [2020-11-29 21:01:14,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:01:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-29 21:01:14,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-29 21:01:14,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 21:01:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-11-29 21:01:14,728 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 54 [2020-11-29 21:01:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:14,728 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-11-29 21:01:14,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:01:14,728 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-11-29 21:01:14,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 21:01:14,731 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:14,732 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:14,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 21:01:14,732 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:14,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2078497852, now seen corresponding path program 1 times [2020-11-29 21:01:14,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:14,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649418755] [2020-11-29 21:01:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:14,980 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:15,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:15,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649418755] [2020-11-29 21:01:15,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:15,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 21:01:15,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708178490] [2020-11-29 21:01:15,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:01:15,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:15,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:01:15,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:01:15,222 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 11 states. [2020-11-29 21:01:15,418 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-29 21:01:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:15,787 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2020-11-29 21:01:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:01:15,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-11-29 21:01:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:15,789 INFO L225 Difference]: With dead ends: 122 [2020-11-29 21:01:15,789 INFO L226 Difference]: Without dead ends: 122 [2020-11-29 21:01:15,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-29 21:01:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-29 21:01:15,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2020-11-29 21:01:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-29 21:01:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-11-29 21:01:15,795 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 58 [2020-11-29 21:01:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:15,795 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-11-29 21:01:15,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:01:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-11-29 21:01:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 21:01:15,796 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:15,797 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:15,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 21:01:15,799 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:15,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1308229357, now seen corresponding path program 1 times [2020-11-29 21:01:15,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:15,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738689186] [2020-11-29 21:01:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:15,995 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:16,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738689186] [2020-11-29 21:01:16,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:16,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 21:01:16,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310020062] [2020-11-29 21:01:16,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:01:16,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:16,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:01:16,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:01:16,231 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 11 states. [2020-11-29 21:01:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:16,599 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2020-11-29 21:01:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:01:16,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-11-29 21:01:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:16,601 INFO L225 Difference]: With dead ends: 119 [2020-11-29 21:01:16,601 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 21:01:16,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 21:01:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-11-29 21:01:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 21:01:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2020-11-29 21:01:16,606 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 58 [2020-11-29 21:01:16,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:16,607 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2020-11-29 21:01:16,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:01:16,607 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2020-11-29 21:01:16,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 21:01:16,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:16,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:16,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 21:01:16,608 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:16,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1901754731, now seen corresponding path program 1 times [2020-11-29 21:01:16,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:16,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462976957] [2020-11-29 21:01:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,794 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:16,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:16,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:16,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462976957] [2020-11-29 21:01:16,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:16,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 21:01:16,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990568934] [2020-11-29 21:01:16,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 21:01:16,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:16,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 21:01:16,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 21:01:16,951 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand 8 states. [2020-11-29 21:01:17,106 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-29 21:01:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:17,409 INFO L93 Difference]: Finished difference Result 198 states and 224 transitions. [2020-11-29 21:01:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 21:01:17,410 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-11-29 21:01:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:17,412 INFO L225 Difference]: With dead ends: 198 [2020-11-29 21:01:17,412 INFO L226 Difference]: Without dead ends: 198 [2020-11-29 21:01:17,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:01:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-29 21:01:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2020-11-29 21:01:17,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-11-29 21:01:17,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 211 transitions. [2020-11-29 21:01:17,421 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 211 transitions. Word has length 59 [2020-11-29 21:01:17,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:17,421 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 211 transitions. [2020-11-29 21:01:17,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 21:01:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 211 transitions. [2020-11-29 21:01:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-29 21:01:17,423 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:17,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:17,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 21:01:17,424 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:17,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:17,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1583865939, now seen corresponding path program 1 times [2020-11-29 21:01:17,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:17,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944926729] [2020-11-29 21:01:17,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,592 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:17,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:17,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944926729] [2020-11-29 21:01:17,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:17,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-29 21:01:17,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116416534] [2020-11-29 21:01:17,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 21:01:17,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:17,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 21:01:17,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:01:17,846 INFO L87 Difference]: Start difference. First operand 185 states and 211 transitions. Second operand 10 states. [2020-11-29 21:01:18,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:18,115 INFO L93 Difference]: Finished difference Result 173 states and 193 transitions. [2020-11-29 21:01:18,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:18,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-11-29 21:01:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:18,118 INFO L225 Difference]: With dead ends: 173 [2020-11-29 21:01:18,118 INFO L226 Difference]: Without dead ends: 173 [2020-11-29 21:01:18,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:01:18,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-29 21:01:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-11-29 21:01:18,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-11-29 21:01:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2020-11-29 21:01:18,131 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 59 [2020-11-29 21:01:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:18,131 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2020-11-29 21:01:18,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 21:01:18,131 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2020-11-29 21:01:18,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 21:01:18,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:18,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:18,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 21:01:18,133 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:18,134 INFO L82 PathProgramCache]: Analyzing trace with hash -458128180, now seen corresponding path program 1 times [2020-11-29 21:01:18,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:18,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160931376] [2020-11-29 21:01:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,312 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:18,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:18,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160931376] [2020-11-29 21:01:18,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:18,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:18,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413876959] [2020-11-29 21:01:18,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:18,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:18,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:18,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:18,616 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand 12 states. [2020-11-29 21:01:18,866 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-29 21:01:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:19,318 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2020-11-29 21:01:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 21:01:19,319 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2020-11-29 21:01:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:19,320 INFO L225 Difference]: With dead ends: 161 [2020-11-29 21:01:19,320 INFO L226 Difference]: Without dead ends: 157 [2020-11-29 21:01:19,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:01:19,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-11-29 21:01:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2020-11-29 21:01:19,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-11-29 21:01:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-11-29 21:01:19,327 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 63 [2020-11-29 21:01:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:19,327 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-11-29 21:01:19,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:19,327 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-11-29 21:01:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 21:01:19,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:19,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:19,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 21:01:19,330 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:19,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1363713922, now seen corresponding path program 1 times [2020-11-29 21:01:19,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:19,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190019281] [2020-11-29 21:01:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,486 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:19,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:19,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190019281] [2020-11-29 21:01:19,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:19,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 21:01:19,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536307830] [2020-11-29 21:01:19,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:01:19,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:19,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:01:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:01:19,698 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 9 states. [2020-11-29 21:01:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:20,042 INFO L93 Difference]: Finished difference Result 169 states and 185 transitions. [2020-11-29 21:01:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:01:20,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-11-29 21:01:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:20,044 INFO L225 Difference]: With dead ends: 169 [2020-11-29 21:01:20,044 INFO L226 Difference]: Without dead ends: 169 [2020-11-29 21:01:20,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:01:20,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-11-29 21:01:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 163. [2020-11-29 21:01:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-11-29 21:01:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 179 transitions. [2020-11-29 21:01:20,051 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 179 transitions. Word has length 65 [2020-11-29 21:01:20,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:20,052 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 179 transitions. [2020-11-29 21:01:20,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:01:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 179 transitions. [2020-11-29 21:01:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 21:01:20,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:20,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:20,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 21:01:20,054 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:20,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1149867629, now seen corresponding path program 1 times [2020-11-29 21:01:20,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:20,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245260539] [2020-11-29 21:01:20,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,220 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:20,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:20,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245260539] [2020-11-29 21:01:20,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:20,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 21:01:20,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688816586] [2020-11-29 21:01:20,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:01:20,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:20,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:01:20,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:01:20,376 INFO L87 Difference]: Start difference. First operand 163 states and 179 transitions. Second operand 9 states. [2020-11-29 21:01:20,750 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-29 21:01:20,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:20,835 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2020-11-29 21:01:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:20,836 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-11-29 21:01:20,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:20,837 INFO L225 Difference]: With dead ends: 181 [2020-11-29 21:01:20,838 INFO L226 Difference]: Without dead ends: 179 [2020-11-29 21:01:20,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-29 21:01:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-11-29 21:01:20,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2020-11-29 21:01:20,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 21:01:20,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-11-29 21:01:20,846 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 65 [2020-11-29 21:01:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:20,847 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-11-29 21:01:20,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:01:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-11-29 21:01:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 21:01:20,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:20,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:20,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 21:01:20,853 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:20,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:20,854 INFO L82 PathProgramCache]: Analyzing trace with hash -651239234, now seen corresponding path program 1 times [2020-11-29 21:01:20,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:20,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165323560] [2020-11-29 21:01:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,045 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:21,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:21,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165323560] [2020-11-29 21:01:21,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:21,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:21,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514984503] [2020-11-29 21:01:21,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:21,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:21,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:21,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:21,307 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 12 states. [2020-11-29 21:01:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:21,854 INFO L93 Difference]: Finished difference Result 176 states and 189 transitions. [2020-11-29 21:01:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:01:21,855 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-11-29 21:01:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:21,857 INFO L225 Difference]: With dead ends: 176 [2020-11-29 21:01:21,857 INFO L226 Difference]: Without dead ends: 176 [2020-11-29 21:01:21,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:01:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-29 21:01:21,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 167. [2020-11-29 21:01:21,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-11-29 21:01:21,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 180 transitions. [2020-11-29 21:01:21,865 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 180 transitions. Word has length 65 [2020-11-29 21:01:21,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:21,866 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 180 transitions. [2020-11-29 21:01:21,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:21,866 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 180 transitions. [2020-11-29 21:01:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 21:01:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:21,869 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:21,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 21:01:21,870 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:21,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1790483582, now seen corresponding path program 1 times [2020-11-29 21:01:21,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:21,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024363008] [2020-11-29 21:01:21,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,132 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:22,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:22,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024363008] [2020-11-29 21:01:22,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:22,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:22,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210984708] [2020-11-29 21:01:22,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:22,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:22,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:22,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:22,446 INFO L87 Difference]: Start difference. First operand 167 states and 180 transitions. Second operand 12 states. [2020-11-29 21:01:22,611 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-29 21:01:22,907 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-11-29 21:01:23,362 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-29 21:01:23,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:23,494 INFO L93 Difference]: Finished difference Result 164 states and 176 transitions. [2020-11-29 21:01:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 21:01:23,495 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-11-29 21:01:23,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:23,496 INFO L225 Difference]: With dead ends: 164 [2020-11-29 21:01:23,496 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 21:01:23,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-11-29 21:01:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 21:01:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-29 21:01:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-29 21:01:23,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 154 transitions. [2020-11-29 21:01:23,503 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 154 transitions. Word has length 66 [2020-11-29 21:01:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:23,503 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 154 transitions. [2020-11-29 21:01:23,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 154 transitions. [2020-11-29 21:01:23,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 21:01:23,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:23,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:23,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 21:01:23,505 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:23,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:23,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1433605103, now seen corresponding path program 1 times [2020-11-29 21:01:23,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:23,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621342676] [2020-11-29 21:01:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,711 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:23,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:23,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:23,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621342676] [2020-11-29 21:01:23,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:23,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-29 21:01:23,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105994149] [2020-11-29 21:01:23,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 21:01:23,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:23,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 21:01:23,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:23,972 INFO L87 Difference]: Start difference. First operand 145 states and 154 transitions. Second operand 12 states. [2020-11-29 21:01:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:24,459 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2020-11-29 21:01:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:01:24,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-11-29 21:01:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:24,461 INFO L225 Difference]: With dead ends: 145 [2020-11-29 21:01:24,462 INFO L226 Difference]: Without dead ends: 145 [2020-11-29 21:01:24,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:01:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-11-29 21:01:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2020-11-29 21:01:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-29 21:01:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 152 transitions. [2020-11-29 21:01:24,467 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 152 transitions. Word has length 66 [2020-11-29 21:01:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:24,468 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 152 transitions. [2020-11-29 21:01:24,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 21:01:24,468 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 152 transitions. [2020-11-29 21:01:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 21:01:24,470 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:24,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:24,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 21:01:24,471 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash 101258944, now seen corresponding path program 1 times [2020-11-29 21:01:24,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:24,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051300240] [2020-11-29 21:01:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:24,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:24,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051300240] [2020-11-29 21:01:24,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:24,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 21:01:24,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390666586] [2020-11-29 21:01:24,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 21:01:24,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:24,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 21:01:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:01:24,813 INFO L87 Difference]: Start difference. First operand 145 states and 152 transitions. Second operand 9 states. [2020-11-29 21:01:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:25,107 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2020-11-29 21:01:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:25,107 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-11-29 21:01:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:25,108 INFO L225 Difference]: With dead ends: 140 [2020-11-29 21:01:25,108 INFO L226 Difference]: Without dead ends: 138 [2020-11-29 21:01:25,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:01:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-29 21:01:25,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-11-29 21:01:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-29 21:01:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 141 transitions. [2020-11-29 21:01:25,114 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 141 transitions. Word has length 66 [2020-11-29 21:01:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:25,115 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 141 transitions. [2020-11-29 21:01:25,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 21:01:25,115 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 141 transitions. [2020-11-29 21:01:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-29 21:01:25,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:01:25,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:01:25,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 21:01:25,116 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 21:01:25,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:01:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1317067693, now seen corresponding path program 1 times [2020-11-29 21:01:25,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:01:25,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63865509] [2020-11-29 21:01:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:01:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,328 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-29 21:01:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 21:01:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-29 21:01:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-11-29 21:01:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-29 21:01:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-29 21:01:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-11-29 21:01:25,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-29 21:01:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-11-29 21:01:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:01:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:01:25,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63865509] [2020-11-29 21:01:25,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:01:25,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 21:01:25,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72327297] [2020-11-29 21:01:25,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 21:01:25,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:01:25,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 21:01:25,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:01:25,546 INFO L87 Difference]: Start difference. First operand 138 states and 141 transitions. Second operand 11 states. [2020-11-29 21:01:25,691 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-29 21:01:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:01:25,900 INFO L93 Difference]: Finished difference Result 108 states and 107 transitions. [2020-11-29 21:01:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:01:25,903 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 77 [2020-11-29 21:01:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:01:25,904 INFO L225 Difference]: With dead ends: 108 [2020-11-29 21:01:25,904 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:01:25,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-11-29 21:01:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:01:25,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:01:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:01:25,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:01:25,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2020-11-29 21:01:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:01:25,905 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:01:25,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 21:01:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:01:25,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:01:25,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 21:01:25,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:01:25 BoogieIcfgContainer [2020-11-29 21:01:25,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:01:25,912 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:01:25,912 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:01:25,915 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:01:25,916 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:00:55" (3/4) ... [2020-11-29 21:01:25,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:01:25,927 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Complete [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_Power [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2020-11-29 21:01:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PoCallDriver [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 21:01:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_CreateClose [2020-11-29 21:01:25,930 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_InternIoCtl [2020-11-29 21:01:25,930 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2020-11-29 21:01:25,930 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2020-11-29 21:01:25,930 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_DispatchPassThrough [2020-11-29 21:01:25,931 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KbFilter_PnP [2020-11-29 21:01:25,964 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2020-11-29 21:01:25,967 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2020-11-29 21:01:25,969 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 21:01:25,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:01:26,159 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_facdfc39-641d-4181-b266-aa35a570afa5/bin/uautomizer/witness.graphml [2020-11-29 21:01:26,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:01:26,161 INFO L168 Benchmark]: Toolchain (without parser) took 32814.79 ms. Allocated memory was 96.5 MB in the beginning and 318.8 MB in the end (delta: 222.3 MB). Free memory was 60.6 MB in the beginning and 173.7 MB in the end (delta: -113.1 MB). Peak memory consumption was 108.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,161 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.7 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:01:26,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 766.12 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 64.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,162 INFO L168 Benchmark]: Boogie Preprocessor took 101.74 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 61.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,163 INFO L168 Benchmark]: RCFGBuilder took 1772.11 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.9 MB in the beginning and 65.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,164 INFO L168 Benchmark]: TraceAbstraction took 29918.73 ms. Allocated memory was 125.8 MB in the beginning and 318.8 MB in the end (delta: 192.9 MB). Free memory was 65.1 MB in the beginning and 188.4 MB in the end (delta: -123.2 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,164 INFO L168 Benchmark]: Witness Printer took 247.62 ms. Allocated memory is still 318.8 MB. Free memory was 188.4 MB in the beginning and 173.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:01:26,168 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.7 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 766.12 ms. Allocated memory is still 96.5 MB. Free memory was 60.4 MB in the beginning and 64.8 MB in the end (delta: -4.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 101.74 ms. Allocated memory is still 96.5 MB. Free memory was 64.8 MB in the beginning and 61.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1772.11 ms. Allocated memory was 96.5 MB in the beginning and 125.8 MB in the end (delta: 29.4 MB). Free memory was 61.9 MB in the beginning and 65.9 MB in the end (delta: -4.1 MB). Peak memory consumption was 43.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 29918.73 ms. Allocated memory was 125.8 MB in the beginning and 318.8 MB in the end (delta: 192.9 MB). Free memory was 65.1 MB in the beginning and 188.4 MB in the end (delta: -123.2 MB). Peak memory consumption was 69.4 MB. Max. memory is 16.1 GB. * Witness Printer took 247.62 ms. Allocated memory is still 318.8 MB. Free memory was 188.4 MB in the beginning and 173.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 295]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 19 procedures, 244 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.8s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3459 SDtfs, 5150 SDslu, 3843 SDs, 0 SdLazy, 7594 SolverSat, 1274 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 427 GetRequests, 207 SyntacticMatches, 3 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 209 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 1142 NumberOfCodeBlocks, 1142 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1120 ConstructedInterpolants, 0 QuantifiedInterpolants, 309831 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...