/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:08:36,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:08:36,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:08:36,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:08:36,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:08:36,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:08:36,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:08:36,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:08:36,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:08:36,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:08:36,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:08:36,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:08:36,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:08:36,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:08:36,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:08:36,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:08:36,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:08:36,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:08:36,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:08:36,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:08:36,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:08:36,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:08:36,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:08:36,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:08:36,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:08:36,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:08:36,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:08:36,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:08:36,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:08:36,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:08:36,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:08:36,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:08:36,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:08:36,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:08:36,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:08:36,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:08:36,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:08:36,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:08:36,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:08:36,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:08:36,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:08:36,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 17:08:36,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:08:36,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:08:36,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:08:36,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:08:36,996 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:08:36,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:08:36,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:08:36,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:08:36,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:08:36,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:08:36,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:08:36,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:08:36,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:08:36,999 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:08:37,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:08:37,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:08:37,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:08:37,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:08:37,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:08:37,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:08:37,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:08:37,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:37,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:08:37,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:08:37,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:08:37,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:08:37,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:08:37,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:08:37,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:08:37,003 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;log-additional-information=true; [2020-09-24 17:08:37,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:08:37,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:08:37,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:08:37,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:08:37,576 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:08:37,577 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-24 17:08:37,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e946fa1/bab6651208e649bfa548c4a8f385a3fe/FLAG932412df6 [2020-09-24 17:08:38,309 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:08:38,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-sorted-1.i [2020-09-24 17:08:38,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e946fa1/bab6651208e649bfa548c4a8f385a3fe/FLAG932412df6 [2020-09-24 17:08:38,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2e946fa1/bab6651208e649bfa548c4a8f385a3fe [2020-09-24 17:08:38,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:08:38,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:08:38,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:38,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:08:38,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:08:38,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:38" (1/1) ... [2020-09-24 17:08:38,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb1485c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:38, skipping insertion in model container [2020-09-24 17:08:38,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:38" (1/1) ... [2020-09-24 17:08:38,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:08:38,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:08:39,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:39,220 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:08:39,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:39,336 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:08:39,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39 WrapperNode [2020-09-24 17:08:39,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:39,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:08:39,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:08:39,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:08:39,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... [2020-09-24 17:08:39,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:08:39,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:08:39,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:08:39,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:08:39,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/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 [2020-09-24 17:08:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:08:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:08:39,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:08:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:08:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:08:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:08:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:08:39,510 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:08:39,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:08:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:08:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:08:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:08:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:08:39,512 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:08:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:08:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:08:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:08:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:08:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:08:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:08:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:08:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:08:39,517 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:08:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:08:39,519 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:08:39,520 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:08:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:08:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:08:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:08:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:08:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:08:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:08:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:08:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:08:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:08:40,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:08:40,293 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-09-24 17:08:40,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:40 BoogieIcfgContainer [2020-09-24 17:08:40,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:08:40,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:08:40,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:08:40,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:08:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:08:38" (1/3) ... [2020-09-24 17:08:40,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49163640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:40, skipping insertion in model container [2020-09-24 17:08:40,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:39" (2/3) ... [2020-09-24 17:08:40,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49163640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:40, skipping insertion in model container [2020-09-24 17:08:40,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:40" (3/3) ... [2020-09-24 17:08:40,316 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2020-09-24 17:08:40,331 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:08:40,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-09-24 17:08:40,364 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-09-24 17:08:40,393 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:08:40,393 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:08:40,393 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:08:40,393 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:08:40,393 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:08:40,394 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:08:40,394 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:08:40,394 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:08:40,423 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-24 17:08:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-24 17:08:40,431 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:40,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:40,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:40,442 INFO L82 PathProgramCache]: Analyzing trace with hash 815166367, now seen corresponding path program 1 times [2020-09-24 17:08:40,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:40,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978476492] [2020-09-24 17:08:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:40,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:40,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:08:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-09-24 17:08:41,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:08:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:41,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:08:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:08:41,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:41,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,118 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:41,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 17:08:41,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:41,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:41,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:41,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978476492] [2020-09-24 17:08:41,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:41,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 17:08:41,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467020094] [2020-09-24 17:08:41,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:08:41,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:41,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:08:41,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:08:41,164 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 6 states. [2020-09-24 17:08:41,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:41,699 INFO L93 Difference]: Finished difference Result 390 states and 486 transitions. [2020-09-24 17:08:41,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 17:08:41,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-24 17:08:41,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:41,719 INFO L225 Difference]: With dead ends: 390 [2020-09-24 17:08:41,719 INFO L226 Difference]: Without dead ends: 246 [2020-09-24 17:08:41,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:41,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-24 17:08:41,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 142. [2020-09-24 17:08:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-09-24 17:08:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-09-24 17:08:41,791 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 18 [2020-09-24 17:08:41,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:41,791 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-09-24 17:08:41,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:08:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-09-24 17:08:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 17:08:41,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:41,794 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] [2020-09-24 17:08:41,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:08:41,794 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:41,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1753263237, now seen corresponding path program 1 times [2020-09-24 17:08:41,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:41,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985562222] [2020-09-24 17:08:41,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:41,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:42,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:44,772 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:44,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 17:08:44,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 17:08:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2952 [2020-09-24 17:08:44,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:08:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 17:08:44,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:08:44,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:44,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:44,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:44,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:44,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:44,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:08:44,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:44,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985562222] [2020-09-24 17:08:44,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:44,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:08:44,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269277553] [2020-09-24 17:08:44,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:08:44,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:44,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:08:44,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:44,840 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 4 states. [2020-09-24 17:08:45,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:45,141 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2020-09-24 17:08:45,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:08:45,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 17:08:45,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:45,144 INFO L225 Difference]: With dead ends: 228 [2020-09-24 17:08:45,144 INFO L226 Difference]: Without dead ends: 143 [2020-09-24 17:08:45,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:45,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-24 17:08:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2020-09-24 17:08:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-24 17:08:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 153 transitions. [2020-09-24 17:08:45,179 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 153 transitions. Word has length 43 [2020-09-24 17:08:45,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:45,179 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 153 transitions. [2020-09-24 17:08:45,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:08:45,179 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 153 transitions. [2020-09-24 17:08:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 17:08:45,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:45,181 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] [2020-09-24 17:08:45,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:08:45,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:45,188 INFO L82 PathProgramCache]: Analyzing trace with hash 631803582, now seen corresponding path program 1 times [2020-09-24 17:08:45,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:45,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170326369] [2020-09-24 17:08:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:45,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:45,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,845 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:47,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 17:08:47,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:08:47,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2631 [2020-09-24 17:08:47,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:08:47,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 17:08:47,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:08:47,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:47,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:47,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:47,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:08:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:47,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170326369] [2020-09-24 17:08:47,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:47,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:08:47,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193314208] [2020-09-24 17:08:47,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:08:47,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:47,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:08:47,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:08:47,977 INFO L87 Difference]: Start difference. First operand 143 states and 153 transitions. Second operand 8 states. [2020-09-24 17:08:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:48,439 INFO L93 Difference]: Finished difference Result 257 states and 275 transitions. [2020-09-24 17:08:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:08:48,440 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-09-24 17:08:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:48,442 INFO L225 Difference]: With dead ends: 257 [2020-09-24 17:08:48,442 INFO L226 Difference]: Without dead ends: 171 [2020-09-24 17:08:48,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:08:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-24 17:08:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 151. [2020-09-24 17:08:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 17:08:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-09-24 17:08:48,455 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 45 [2020-09-24 17:08:48,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:48,456 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-09-24 17:08:48,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:08:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-09-24 17:08:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-24 17:08:48,458 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:48,459 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] [2020-09-24 17:08:48,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:08:48,459 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash -272282230, now seen corresponding path program 1 times [2020-09-24 17:08:48,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:48,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1718603261] [2020-09-24 17:08:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:50,576 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 17:08:50,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:08:50,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2086 [2020-09-24 17:08:50,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:08:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 17:08:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:50,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:50,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:50,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:50,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:50,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:50,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:08:50,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:50,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:50,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:50,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1718603261] [2020-09-24 17:08:50,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:50,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:50,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236817721] [2020-09-24 17:08:50,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:50,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:50,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:50,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:50,743 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 7 states. [2020-09-24 17:08:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:51,220 INFO L93 Difference]: Finished difference Result 334 states and 360 transitions. [2020-09-24 17:08:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:08:51,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-09-24 17:08:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:51,222 INFO L225 Difference]: With dead ends: 334 [2020-09-24 17:08:51,222 INFO L226 Difference]: Without dead ends: 248 [2020-09-24 17:08:51,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-24 17:08:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-09-24 17:08:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 164. [2020-09-24 17:08:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 17:08:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 177 transitions. [2020-09-24 17:08:51,235 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 177 transitions. Word has length 48 [2020-09-24 17:08:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:51,235 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 177 transitions. [2020-09-24 17:08:51,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 177 transitions. [2020-09-24 17:08:51,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 17:08:51,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:51,238 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:51,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:08:51,239 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:51,239 INFO L82 PathProgramCache]: Analyzing trace with hash -65716681, now seen corresponding path program 1 times [2020-09-24 17:08:51,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:51,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278459619] [2020-09-24 17:08:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:51,886 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:51,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 17:08:51,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:08:51,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-09-24 17:08:51,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 17:08:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 17:08:51,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:08:51,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:51,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,009 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:52,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:52,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:08:52,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:52,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:52,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:52,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278459619] [2020-09-24 17:08:52,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:52,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479359725] [2020-09-24 17:08:52,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:52,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:52,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:52,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:52,033 INFO L87 Difference]: Start difference. First operand 164 states and 177 transitions. Second operand 7 states. [2020-09-24 17:08:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:52,435 INFO L93 Difference]: Finished difference Result 294 states and 316 transitions. [2020-09-24 17:08:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 17:08:52,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-24 17:08:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:52,437 INFO L225 Difference]: With dead ends: 294 [2020-09-24 17:08:52,437 INFO L226 Difference]: Without dead ends: 179 [2020-09-24 17:08:52,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:08:52,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-09-24 17:08:52,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 161. [2020-09-24 17:08:52,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 17:08:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 172 transitions. [2020-09-24 17:08:52,455 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 172 transitions. Word has length 59 [2020-09-24 17:08:52,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:52,455 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 172 transitions. [2020-09-24 17:08:52,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:52,455 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 172 transitions. [2020-09-24 17:08:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 17:08:52,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:52,459 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] [2020-09-24 17:08:52,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:08:52,464 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:52,464 INFO L82 PathProgramCache]: Analyzing trace with hash 964312838, now seen corresponding path program 1 times [2020-09-24 17:08:52,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:52,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687994061] [2020-09-24 17:08:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:52,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:52,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:53,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,128 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:57,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 17:08:57,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4640 [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 17:08:57,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:08:57,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:57,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687994061] [2020-09-24 17:08:57,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:57,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 17:08:57,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232717126] [2020-09-24 17:08:57,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 17:08:57,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:57,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 17:08:57,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-24 17:08:57,531 INFO L87 Difference]: Start difference. First operand 161 states and 172 transitions. Second operand 13 states. [2020-09-24 17:08:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:58,451 INFO L93 Difference]: Finished difference Result 368 states and 390 transitions. [2020-09-24 17:08:58,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:08:58,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-09-24 17:08:58,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:58,456 INFO L225 Difference]: With dead ends: 368 [2020-09-24 17:08:58,457 INFO L226 Difference]: Without dead ends: 365 [2020-09-24 17:08:58,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:08:58,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-09-24 17:08:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 194. [2020-09-24 17:08:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-24 17:08:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2020-09-24 17:08:58,468 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 59 [2020-09-24 17:08:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:58,469 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2020-09-24 17:08:58,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 17:08:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2020-09-24 17:08:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 17:08:58,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:58,471 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] [2020-09-24 17:08:58,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:08:58,472 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash -249552179, now seen corresponding path program 1 times [2020-09-24 17:08:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:58,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957078594] [2020-09-24 17:08:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:58,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 17:09:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:09:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2640 [2020-09-24 17:09:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:09:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 17:09:01,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:09:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:01,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:01,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,232 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:01,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:01,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:09:01,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:01,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:01,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957078594] [2020-09-24 17:09:01,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:01,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:09:01,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977921916] [2020-09-24 17:09:01,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:09:01,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:01,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:09:01,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:09:01,250 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand 5 states. [2020-09-24 17:09:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:01,528 INFO L93 Difference]: Finished difference Result 234 states and 249 transitions. [2020-09-24 17:09:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:09:01,529 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-09-24 17:09:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:01,531 INFO L225 Difference]: With dead ends: 234 [2020-09-24 17:09:01,531 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 17:09:01,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:09:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 17:09:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 195. [2020-09-24 17:09:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 17:09:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 208 transitions. [2020-09-24 17:09:01,544 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 208 transitions. Word has length 60 [2020-09-24 17:09:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:01,545 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 208 transitions. [2020-09-24 17:09:01,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:09:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 208 transitions. [2020-09-24 17:09:01,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 17:09:01,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:01,548 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] [2020-09-24 17:09:01,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:09:01,549 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:01,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1003516945, now seen corresponding path program 1 times [2020-09-24 17:09:01,549 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:01,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933725580] [2020-09-24 17:09:01,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:01,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:02,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:02,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:08,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:08,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 17:09:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:09:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6920 [2020-09-24 17:09:08,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:09:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:09:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 17:09:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:08,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:08,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:08,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:08,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:08,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:08,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933725580] [2020-09-24 17:09:08,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:08,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:09:08,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672639414] [2020-09-24 17:09:08,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:09:08,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:09:08,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:09:08,596 INFO L87 Difference]: Start difference. First operand 195 states and 208 transitions. Second operand 7 states. [2020-09-24 17:09:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:09,037 INFO L93 Difference]: Finished difference Result 349 states and 371 transitions. [2020-09-24 17:09:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:09:09,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-09-24 17:09:09,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:09,039 INFO L225 Difference]: With dead ends: 349 [2020-09-24 17:09:09,040 INFO L226 Difference]: Without dead ends: 296 [2020-09-24 17:09:09,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:09:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2020-09-24 17:09:09,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 164. [2020-09-24 17:09:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 17:09:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 175 transitions. [2020-09-24 17:09:09,052 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 175 transitions. Word has length 61 [2020-09-24 17:09:09,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:09,055 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 175 transitions. [2020-09-24 17:09:09,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:09:09,055 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 175 transitions. [2020-09-24 17:09:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 17:09:09,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:09,057 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] [2020-09-24 17:09:09,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:09:09,057 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:09,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash -70417469, now seen corresponding path program 1 times [2020-09-24 17:09:09,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:09,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197777137] [2020-09-24 17:09:09,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,912 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 17:09:09,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 836 [2020-09-24 17:09:09,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:09:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 17:09:09,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 17:09:09,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:09,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:09,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,943 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:09,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:09,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:09,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:09,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:09:09,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197777137] [2020-09-24 17:09:09,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:09:09,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:09:09,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53408218] [2020-09-24 17:09:09,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:09:09,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:09,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:09:09,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:09,952 INFO L87 Difference]: Start difference. First operand 164 states and 175 transitions. Second operand 4 states. [2020-09-24 17:09:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:10,163 INFO L93 Difference]: Finished difference Result 325 states and 349 transitions. [2020-09-24 17:09:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:09:10,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-09-24 17:09:10,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:10,165 INFO L225 Difference]: With dead ends: 325 [2020-09-24 17:09:10,165 INFO L226 Difference]: Without dead ends: 177 [2020-09-24 17:09:10,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:09:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-24 17:09:10,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2020-09-24 17:09:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-24 17:09:10,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 181 transitions. [2020-09-24 17:09:10,174 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 181 transitions. Word has length 61 [2020-09-24 17:09:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:10,174 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 181 transitions. [2020-09-24 17:09:10,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:09:10,175 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 181 transitions. [2020-09-24 17:09:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 17:09:10,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:10,176 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:10,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:09:10,176 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:10,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:10,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1072824646, now seen corresponding path program 1 times [2020-09-24 17:09:10,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:10,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976773746] [2020-09-24 17:09:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 17:09:10,201 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 17:09:10,202 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 17:09:10,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:09:10,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 05:09:10 BoogieIcfgContainer [2020-09-24 17:09:10,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 17:09:10,237 INFO L168 Benchmark]: Toolchain (without parser) took 31688.94 ms. Allocated memory was 140.0 MB in the beginning and 445.6 MB in the end (delta: 305.7 MB). Free memory was 100.2 MB in the beginning and 125.0 MB in the end (delta: -24.8 MB). Peak memory consumption was 280.8 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,238 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.25 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 99.6 MB in the beginning and 167.5 MB in the end (delta: -67.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,240 INFO L168 Benchmark]: Boogie Preprocessor took 86.16 ms. Allocated memory is still 201.3 MB. Free memory was 167.5 MB in the beginning and 164.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,240 INFO L168 Benchmark]: RCFGBuilder took 877.76 ms. Allocated memory is still 201.3 MB. Free memory was 164.1 MB in the beginning and 102.6 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,242 INFO L168 Benchmark]: TraceAbstraction took 29927.21 ms. Allocated memory was 201.3 MB in the beginning and 445.6 MB in the end (delta: 244.3 MB). Free memory was 102.6 MB in the beginning and 125.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 221.9 MB. Max. memory is 7.1 GB. [2020-09-24 17:09:10,245 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.0 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.25 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 99.6 MB in the beginning and 167.5 MB in the end (delta: -67.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.16 ms. Allocated memory is still 201.3 MB. Free memory was 167.5 MB in the beginning and 164.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 877.76 ms. Allocated memory is still 201.3 MB. Free memory was 164.1 MB in the beginning and 102.6 MB in the end (delta: 61.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29927.21 ms. Allocated memory was 201.3 MB in the beginning and 445.6 MB in the end (delta: 244.3 MB). Free memory was 102.6 MB in the beginning and 125.0 MB in the end (delta: -22.4 MB). Peak memory consumption was 221.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1027]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = ((void*)0) [L988] head->prev = ((void*)0) [L989] head->data = 0 [L991] SLL* x = head; [L992] int marked = 0; [L995] COND TRUE __VERIFIER_nondet_int() || !marked [L998] x->next = malloc(sizeof(SLL)) [L999] EXPR x->next [L999] x->next->prev = x [L1000] EXPR x->next [L1000] x = x->next [L1001] x->next = ((void*)0) [L1003] COND TRUE __VERIFIER_nondet_int() [L1005] marked = 1 [L1008] COND TRUE \read(marked) [L1009] x->data = 1 [L995] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1014] x = head [L1016] COND FALSE !(!(((void*)0) != x)) [L1017] marked = 0 [L1019] EXPR x->next [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] EXPR x->next [L1019] EXPR x->next->data [L1019] x->next != ((void*)0) && x->next->data == 0 [L1019] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1024] EXPR x->next [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1024] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1026] EXPR x->next [L1026] x = x->next [L1027] EXPR x->data [L1027] COND TRUE !(x->data != 1) [L1027] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.8s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1227 SDtfs, 2153 SDslu, 2977 SDs, 0 SdLazy, 2372 SolverSat, 100 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 554 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.9s InterpolantComputationTime, 520 NumberOfCodeBlocks, 520 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 125816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 4/4 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 incorrect! Received shutdown request...