/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --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/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:29:53,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:29:53,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:29:53,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:29:53,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:29:53,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:29:53,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:29:53,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:29:53,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:29:53,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:29:53,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:29:53,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:29:53,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:29:53,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:29:53,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:29:53,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:29:53,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:29:53,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:29:53,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:29:53,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:29:53,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:29:53,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:29:53,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:29:53,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:29:53,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:29:53,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:29:53,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:29:53,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:29:53,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:29:53,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:29:53,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:29:53,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:29:53,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:29:53,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:29:53,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:29:53,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:29:53,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:29:53,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:29:53,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:29:53,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:29:53,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:29:53,480 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 20:29:53,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:29:53,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:29:53,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:29:53,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:29:53,520 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:29:53,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:29:53,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:29:53,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:29:53,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:29:53,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:29:53,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:29:53,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:29:53,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:29:53,524 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:29:53,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:29:53,525 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:29:53,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:29:53,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:29:53,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:29:53,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:29:53,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:29:53,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:29:53,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:29:53,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:29:53,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:29:53,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:29:53,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:29:53,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:29:53,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:29:53,528 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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;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;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:29:54,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:29:54,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:29:54,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:29:54,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:29:54,044 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:29:54,046 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 20:29:54,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b690ff24a/0fe2c90f863b492ca93399ec119e4233/FLAGeb2c45bd2 [2020-09-24 20:29:54,773 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:29:54,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-24 20:29:54,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b690ff24a/0fe2c90f863b492ca93399ec119e4233/FLAGeb2c45bd2 [2020-09-24 20:29:55,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b690ff24a/0fe2c90f863b492ca93399ec119e4233 [2020-09-24 20:29:55,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:29:55,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:29:55,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:55,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:29:55,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:29:55,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0ba802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55, skipping insertion in model container [2020-09-24 20:29:55,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:29:55,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:29:55,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:55,647 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:29:55,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:29:55,773 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:29:55,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55 WrapperNode [2020-09-24 20:29:55,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:29:55,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:29:55,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:29:55,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:29:55,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (1/1) ... [2020-09-24 20:29:55,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:29:55,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:29:55,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:29:55,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:29:55,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (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 20:29:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:29:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:29:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:29:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 20:29:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 20:29:55,931 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 20:29:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 20:29:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 20:29:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 20:29:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 20:29:55,932 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 20:29:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 20:29:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 20:29:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 20:29:55,933 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 20:29:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 20:29:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 20:29:55,934 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 20:29:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 20:29:55,935 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 20:29:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 20:29:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 20:29:55,936 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 20:29:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 20:29:55,937 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 20:29:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 20:29:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 20:29:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 20:29:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 20:29:55,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 20:29:55,940 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 20:29:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 20:29:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 20:29:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 20:29:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 20:29:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 20:29:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 20:29:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 20:29:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 20:29:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 20:29:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 20:29:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 20:29:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:29:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:29:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 20:29:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:29:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 20:29:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 20:29:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 20:29:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 20:29:55,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:29:55,947 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 20:29:55,948 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 20:29:55,949 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 20:29:55,950 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 20:29:55,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 20:29:55,952 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 20:29:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:29:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:29:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:29:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:29:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:29:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:29:56,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:29:56,685 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-24 20:29:56,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:56 BoogieIcfgContainer [2020-09-24 20:29:56,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:29:56,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:29:56,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:29:56,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:29:56,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:29:55" (1/3) ... [2020-09-24 20:29:56,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc4c0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:56, skipping insertion in model container [2020-09-24 20:29:56,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:29:55" (2/3) ... [2020-09-24 20:29:56,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc4c0fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:29:56, skipping insertion in model container [2020-09-24 20:29:56,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:29:56" (3/3) ... [2020-09-24 20:29:56,703 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-24 20:29:56,716 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:29:56,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-24 20:29:56,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-24 20:29:56,781 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:29:56,781 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:29:56,782 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:29:56,782 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:29:56,782 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:29:56,782 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:29:56,782 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:29:56,782 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:29:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-24 20:29:56,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 20:29:56,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:56,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:29:56,819 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:56,826 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-24 20:29:56,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:56,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581599736] [2020-09-24 20:29:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:57,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:57,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 20:29:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-24 20:29:57,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:57,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:29:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:29:57,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:29:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:29:57,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:57,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:57,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:57,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 20:29:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:57,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:57,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:29:57,447 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 20:29:57,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581599736] [2020-09-24 20:29:57,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:57,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:29:57,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019028284] [2020-09-24 20:29:57,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:29:57,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:57,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:29:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:29:57,484 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-24 20:29:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:57,941 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-24 20:29:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:29:57,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-24 20:29:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:57,959 INFO L225 Difference]: With dead ends: 360 [2020-09-24 20:29:57,959 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 20:29:57,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:57,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 20:29:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-24 20:29:58,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-24 20:29:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-24 20:29:58,032 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-24 20:29:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:58,032 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-24 20:29:58,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:29:58,033 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-24 20:29:58,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-24 20:29:58,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:58,034 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] [2020-09-24 20:29:58,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:29:58,035 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:58,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:58,035 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-24 20:29:58,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:58,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367553581] [2020-09-24 20:29:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:58,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:29:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 20:29:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:29:58,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:29:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:29:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:58,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:58,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:58,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:58,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:58,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:29:58,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:58,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:58,419 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 20:29:58,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367553581] [2020-09-24 20:29:58,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:58,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:29:58,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38992229] [2020-09-24 20:29:58,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:29:58,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:29:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:29:58,423 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 6 states. [2020-09-24 20:29:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:58,904 INFO L93 Difference]: Finished difference Result 397 states and 422 transitions. [2020-09-24 20:29:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:29:58,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-09-24 20:29:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:58,908 INFO L225 Difference]: With dead ends: 397 [2020-09-24 20:29:58,908 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 20:29:58,910 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 20:29:58,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 20:29:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 167. [2020-09-24 20:29:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-24 20:29:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 177 transitions. [2020-09-24 20:29:58,928 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 177 transitions. Word has length 24 [2020-09-24 20:29:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:58,929 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 177 transitions. [2020-09-24 20:29:58,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:29:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 177 transitions. [2020-09-24 20:29:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 20:29:58,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:58,931 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] [2020-09-24 20:29:58,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:29:58,931 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:58,932 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-24 20:29:58,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:58,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669075092] [2020-09-24 20:29:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:59,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:59,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:29:59,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:29:59,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 20:29:59,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:29:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:29:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:29:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:29:59,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:29:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:59,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:29:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:29:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:29:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:29:59,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:29:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:29:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:29:59,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:29:59,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:29:59,333 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 20:29:59,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669075092] [2020-09-24 20:29:59,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:29:59,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:29:59,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273373748] [2020-09-24 20:29:59,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:29:59,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:29:59,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:29:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:29:59,336 INFO L87 Difference]: Start difference. First operand 167 states and 177 transitions. Second operand 8 states. [2020-09-24 20:29:59,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:29:59,852 INFO L93 Difference]: Finished difference Result 256 states and 273 transitions. [2020-09-24 20:29:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:29:59,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-24 20:29:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:29:59,856 INFO L225 Difference]: With dead ends: 256 [2020-09-24 20:29:59,857 INFO L226 Difference]: Without dead ends: 251 [2020-09-24 20:29:59,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:29:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-24 20:29:59,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 162. [2020-09-24 20:29:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-24 20:29:59,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-24 20:29:59,889 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 26 [2020-09-24 20:29:59,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:29:59,890 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-24 20:29:59,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:29:59,890 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-24 20:29:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:29:59,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:29:59,892 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] [2020-09-24 20:29:59,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:29:59,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:29:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:29:59,893 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-24 20:29:59,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:29:59,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602936716] [2020-09-24 20:29:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:29:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:29:59,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:29:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:00,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:30:00,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:00,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 20:30:00,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:00,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:30:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:30:00,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:30:00,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:00,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:00,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:00,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:00,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:00,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:30:00,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:00,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:00,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:00,260 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 20:30:00,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602936716] [2020-09-24 20:30:00,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:00,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:30:00,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663603439] [2020-09-24 20:30:00,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:30:00,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:00,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:30:00,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:30:00,265 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 6 states. [2020-09-24 20:30:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:00,603 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-09-24 20:30:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:30:00,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-24 20:30:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:00,605 INFO L225 Difference]: With dead ends: 271 [2020-09-24 20:30:00,606 INFO L226 Difference]: Without dead ends: 239 [2020-09-24 20:30:00,607 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 20:30:00,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-09-24 20:30:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-09-24 20:30:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 20:30:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-09-24 20:30:00,617 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-09-24 20:30:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:00,618 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-09-24 20:30:00,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:30:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-09-24 20:30:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 20:30:00,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:00,620 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] [2020-09-24 20:30:00,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:30:00,620 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:00,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-24 20:30:00,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:00,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680044128] [2020-09-24 20:30:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:00,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:30:00,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:00,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 20:30:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:30:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-24 20:30:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:30:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:00,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:00,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:00,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:30:00,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:00,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:00,914 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 20:30:00,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680044128] [2020-09-24 20:30:00,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:00,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:30:00,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781885739] [2020-09-24 20:30:00,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:00,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:00,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:00,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:00,917 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-09-24 20:30:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:01,547 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-09-24 20:30:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:30:01,548 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 20:30:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:01,549 INFO L225 Difference]: With dead ends: 245 [2020-09-24 20:30:01,550 INFO L226 Difference]: Without dead ends: 241 [2020-09-24 20:30:01,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:30:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-24 20:30:01,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-09-24 20:30:01,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-24 20:30:01,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-24 20:30:01,568 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-09-24 20:30:01,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:01,569 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-24 20:30:01,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:01,569 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-24 20:30:01,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 20:30:01,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:01,570 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] [2020-09-24 20:30:01,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:30:01,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:01,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:01,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-24 20:30:01,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:01,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4163911] [2020-09-24 20:30:01,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:01,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:01,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:01,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 20:30:01,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:01,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 20:30:01,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:30:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 20:30:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:30:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:01,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:01,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:30:01,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:01,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:01,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:01,724 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 20:30:01,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4163911] [2020-09-24 20:30:01,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:01,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:30:01,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540376595] [2020-09-24 20:30:01,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:30:01,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:01,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:30:01,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:30:01,728 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-09-24 20:30:01,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:01,955 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2020-09-24 20:30:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:30:01,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-24 20:30:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:01,958 INFO L225 Difference]: With dead ends: 199 [2020-09-24 20:30:01,958 INFO L226 Difference]: Without dead ends: 197 [2020-09-24 20:30:01,962 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 20:30:01,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-09-24 20:30:01,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 159. [2020-09-24 20:30:01,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-24 20:30:01,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2020-09-24 20:30:01,977 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 42 [2020-09-24 20:30:01,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:01,978 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2020-09-24 20:30:01,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:30:01,978 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2020-09-24 20:30:01,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:30:01,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:01,990 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] [2020-09-24 20:30:01,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:30:01,991 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-24 20:30:01,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:01,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014068725] [2020-09-24 20:30:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:02,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:02,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:02,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:03,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:03,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 20:30:03,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:30:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-09-24 20:30:03,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:30:03,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:30:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:30:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:03,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:03,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:03,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:03,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:03,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:03,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:30:03,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:03,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:03,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:03,200 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 20:30:03,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014068725] [2020-09-24 20:30:03,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:03,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 20:30:03,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728569042] [2020-09-24 20:30:03,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:30:03,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:03,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:30:03,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:03,205 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand 9 states. [2020-09-24 20:30:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:03,937 INFO L93 Difference]: Finished difference Result 358 states and 385 transitions. [2020-09-24 20:30:03,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:30:03,937 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-09-24 20:30:03,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:03,940 INFO L225 Difference]: With dead ends: 358 [2020-09-24 20:30:03,940 INFO L226 Difference]: Without dead ends: 285 [2020-09-24 20:30:03,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:30:03,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-09-24 20:30:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 178. [2020-09-24 20:30:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-09-24 20:30:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 190 transitions. [2020-09-24 20:30:03,951 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 190 transitions. Word has length 44 [2020-09-24 20:30:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:03,952 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 190 transitions. [2020-09-24 20:30:03,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:30:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 190 transitions. [2020-09-24 20:30:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 20:30:03,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:03,954 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] [2020-09-24 20:30:03,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:30:03,954 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:03,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:03,955 INFO L82 PathProgramCache]: Analyzing trace with hash -992267866, now seen corresponding path program 1 times [2020-09-24 20:30:03,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:03,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159744062] [2020-09-24 20:30:03,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:04,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:04,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:05,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:05,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:30:05,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:30:05,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1696 [2020-09-24 20:30:05,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:30:05,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:30:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 20:30:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:05,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:05,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:05,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:05,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:05,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:05,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:05,913 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 20:30:05,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159744062] [2020-09-24 20:30:05,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:05,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 20:30:05,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792685432] [2020-09-24 20:30:05,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:30:05,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:05,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:30:05,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:30:05,916 INFO L87 Difference]: Start difference. First operand 178 states and 190 transitions. Second operand 13 states. [2020-09-24 20:30:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:07,318 INFO L93 Difference]: Finished difference Result 575 states and 617 transitions. [2020-09-24 20:30:07,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:30:07,318 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-09-24 20:30:07,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:07,321 INFO L225 Difference]: With dead ends: 575 [2020-09-24 20:30:07,322 INFO L226 Difference]: Without dead ends: 491 [2020-09-24 20:30:07,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2020-09-24 20:30:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-09-24 20:30:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 205. [2020-09-24 20:30:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-24 20:30:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 219 transitions. [2020-09-24 20:30:07,340 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 219 transitions. Word has length 49 [2020-09-24 20:30:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:07,341 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 219 transitions. [2020-09-24 20:30:07,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:30:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 219 transitions. [2020-09-24 20:30:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:30:07,347 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:07,347 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] [2020-09-24 20:30:07,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:30:07,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:07,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-24 20:30:07,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:07,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949656717] [2020-09-24 20:30:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:07,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:07,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:07,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 20:30:07,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-24 20:30:07,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:30:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 20:30:07,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:30:07,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:07,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:30:07,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:07,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:07,688 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 20:30:07,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949656717] [2020-09-24 20:30:07,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:07,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:30:07,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411691602] [2020-09-24 20:30:07,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:30:07,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:07,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:30:07,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:30:07,691 INFO L87 Difference]: Start difference. First operand 205 states and 219 transitions. Second operand 6 states. [2020-09-24 20:30:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:08,005 INFO L93 Difference]: Finished difference Result 349 states and 374 transitions. [2020-09-24 20:30:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:30:08,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-09-24 20:30:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:08,009 INFO L225 Difference]: With dead ends: 349 [2020-09-24 20:30:08,010 INFO L226 Difference]: Without dead ends: 229 [2020-09-24 20:30:08,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-09-24 20:30:08,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 208. [2020-09-24 20:30:08,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-09-24 20:30:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2020-09-24 20:30:08,021 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 52 [2020-09-24 20:30:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:08,022 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2020-09-24 20:30:08,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:30:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2020-09-24 20:30:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:30:08,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:08,024 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] [2020-09-24 20:30:08,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:30:08,025 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:08,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:08,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-24 20:30:08,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:08,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839158300] [2020-09-24 20:30:08,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:11,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:30:11,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3192 [2020-09-24 20:30:11,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:30:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:30:11,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:30:11,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:11,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:11,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:11,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:11,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:11,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:11,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:30:11,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:11,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:11,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:11,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:11,828 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 20:30:11,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839158300] [2020-09-24 20:30:11,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:11,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 20:30:11,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768111012] [2020-09-24 20:30:11,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 20:30:11,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 20:30:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:30:11,830 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 14 states. [2020-09-24 20:30:12,896 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 20:30:13,048 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 20:30:13,396 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 20:30:14,026 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-24 20:30:14,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:14,681 INFO L93 Difference]: Finished difference Result 693 states and 740 transitions. [2020-09-24 20:30:14,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 20:30:14,682 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-24 20:30:14,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:14,685 INFO L225 Difference]: With dead ends: 693 [2020-09-24 20:30:14,685 INFO L226 Difference]: Without dead ends: 690 [2020-09-24 20:30:14,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 20:30:14,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-09-24 20:30:14,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 211. [2020-09-24 20:30:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 20:30:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 225 transitions. [2020-09-24 20:30:14,700 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 225 transitions. Word has length 53 [2020-09-24 20:30:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:14,701 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 225 transitions. [2020-09-24 20:30:14,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 20:30:14,701 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 225 transitions. [2020-09-24 20:30:14,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:30:14,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:14,702 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] [2020-09-24 20:30:14,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:30:14,703 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:14,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:14,703 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-09-24 20:30:14,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:14,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640169362] [2020-09-24 20:30:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:14,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:16,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:16,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:16,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 20:30:16,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-09-24 20:30:16,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:30:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:30:16,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:30:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:17,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:17,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:17,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:17,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:17,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:17,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:30:17,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:17,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:17,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:17,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:17,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640169362] [2020-09-24 20:30:17,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:17,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:30:17,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425197264] [2020-09-24 20:30:17,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:30:17,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:17,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:30:17,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:30:17,110 INFO L87 Difference]: Start difference. First operand 211 states and 225 transitions. Second operand 9 states. [2020-09-24 20:30:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:18,253 INFO L93 Difference]: Finished difference Result 461 states and 495 transitions. [2020-09-24 20:30:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:30:18,254 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-24 20:30:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:18,257 INFO L225 Difference]: With dead ends: 461 [2020-09-24 20:30:18,257 INFO L226 Difference]: Without dead ends: 388 [2020-09-24 20:30:18,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-24 20:30:18,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-09-24 20:30:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 281. [2020-09-24 20:30:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-24 20:30:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 308 transitions. [2020-09-24 20:30:18,275 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 308 transitions. Word has length 53 [2020-09-24 20:30:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:18,276 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 308 transitions. [2020-09-24 20:30:18,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:30:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 308 transitions. [2020-09-24 20:30:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 20:30:18,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:18,277 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:18,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:30:18,278 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:18,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:18,278 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-24 20:30:18,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:18,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005672820] [2020-09-24 20:30:18,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:18,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:18,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:18,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 20:30:18,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-09-24 20:30:18,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:30:18,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 20:30:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:30:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:30:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:18,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:18,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:18,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:18,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:30:18,758 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 20:30:18,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005672820] [2020-09-24 20:30:18,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:18,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 20:30:18,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340165941] [2020-09-24 20:30:18,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:30:18,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:18,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:30:18,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:30:18,762 INFO L87 Difference]: Start difference. First operand 281 states and 308 transitions. Second operand 8 states. [2020-09-24 20:30:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:19,220 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-09-24 20:30:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:30:19,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-24 20:30:19,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:19,222 INFO L225 Difference]: With dead ends: 297 [2020-09-24 20:30:19,222 INFO L226 Difference]: Without dead ends: 292 [2020-09-24 20:30:19,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:30:19,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-09-24 20:30:19,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 276. [2020-09-24 20:30:19,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-24 20:30:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 302 transitions. [2020-09-24 20:30:19,238 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 302 transitions. Word has length 54 [2020-09-24 20:30:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:19,239 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 302 transitions. [2020-09-24 20:30:19,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:30:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 302 transitions. [2020-09-24 20:30:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 20:30:19,240 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:19,240 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2020-09-24 20:30:19,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 20:30:19,241 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:19,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1897380797, now seen corresponding path program 1 times [2020-09-24 20:30:19,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:19,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570411247] [2020-09-24 20:30:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:19,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:19,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 20:30:19,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-24 20:30:19,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:30:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:30:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 20:30:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:19,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:19,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:19,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:19,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:30:19,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:19,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:19,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570411247] [2020-09-24 20:30:19,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:19,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:30:19,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506890748] [2020-09-24 20:30:19,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:30:19,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:19,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:30:19,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:30:19,732 INFO L87 Difference]: Start difference. First operand 276 states and 302 transitions. Second operand 7 states. [2020-09-24 20:30:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:20,237 INFO L93 Difference]: Finished difference Result 482 states and 529 transitions. [2020-09-24 20:30:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:30:20,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-09-24 20:30:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:20,240 INFO L225 Difference]: With dead ends: 482 [2020-09-24 20:30:20,242 INFO L226 Difference]: Without dead ends: 371 [2020-09-24 20:30:20,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:30:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2020-09-24 20:30:20,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 320. [2020-09-24 20:30:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-24 20:30:20,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 353 transitions. [2020-09-24 20:30:20,262 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 353 transitions. Word has length 55 [2020-09-24 20:30:20,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:20,262 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 353 transitions. [2020-09-24 20:30:20,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:30:20,262 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 353 transitions. [2020-09-24 20:30:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 20:30:20,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:20,263 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] [2020-09-24 20:30:20,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 20:30:20,264 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:20,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:20,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-24 20:30:20,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:20,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224365836] [2020-09-24 20:30:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:20,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:20,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:21,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:21,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:24,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:24,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 20:30:24,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4066 [2020-09-24 20:30:24,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:24,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 20:30:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:30:24,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 20:30:24,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:24,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:24,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:24,919 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 20:30:24,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224365836] [2020-09-24 20:30:24,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:24,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 20:30:24,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427128027] [2020-09-24 20:30:24,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:30:24,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:30:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:30:24,922 INFO L87 Difference]: Start difference. First operand 320 states and 353 transitions. Second operand 15 states. [2020-09-24 20:30:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:27,025 INFO L93 Difference]: Finished difference Result 571 states and 621 transitions. [2020-09-24 20:30:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 20:30:27,026 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-24 20:30:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:27,029 INFO L225 Difference]: With dead ends: 571 [2020-09-24 20:30:27,029 INFO L226 Difference]: Without dead ends: 568 [2020-09-24 20:30:27,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=706, Unknown=0, NotChecked=0, Total=930 [2020-09-24 20:30:27,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-09-24 20:30:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 324. [2020-09-24 20:30:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-09-24 20:30:27,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 357 transitions. [2020-09-24 20:30:27,049 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 357 transitions. Word has length 57 [2020-09-24 20:30:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:27,049 INFO L479 AbstractCegarLoop]: Abstraction has 324 states and 357 transitions. [2020-09-24 20:30:27,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:30:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 357 transitions. [2020-09-24 20:30:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 20:30:27,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:27,053 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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 20:30:27,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 20:30:27,053 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash -30666707, now seen corresponding path program 1 times [2020-09-24 20:30:27,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:27,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653250900] [2020-09-24 20:30:27,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:27,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:27,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:28,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:28,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:30:28,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:30:28,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 20:30:28,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:30:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 20:30:28,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 20:30:28,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:28,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:28,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:28,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:28,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:28,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:28,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:28,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:28,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653250900] [2020-09-24 20:30:28,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:30:28,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:30:28,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615069822] [2020-09-24 20:30:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:30:28,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:30:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:30:28,264 INFO L87 Difference]: Start difference. First operand 324 states and 357 transitions. Second operand 10 states. [2020-09-24 20:30:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:29,329 INFO L93 Difference]: Finished difference Result 523 states and 571 transitions. [2020-09-24 20:30:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:30:29,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2020-09-24 20:30:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:29,332 INFO L225 Difference]: With dead ends: 523 [2020-09-24 20:30:29,332 INFO L226 Difference]: Without dead ends: 461 [2020-09-24 20:30:29,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:30:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-09-24 20:30:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 353. [2020-09-24 20:30:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2020-09-24 20:30:29,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 395 transitions. [2020-09-24 20:30:29,350 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 395 transitions. Word has length 63 [2020-09-24 20:30:29,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:29,351 INFO L479 AbstractCegarLoop]: Abstraction has 353 states and 395 transitions. [2020-09-24 20:30:29,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:30:29,351 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 395 transitions. [2020-09-24 20:30:29,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 20:30:29,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:29,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:29,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 20:30:29,352 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-24 20:30:29,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:29,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486748116] [2020-09-24 20:30:29,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:29,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:30:29,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:30:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-24 20:30:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:30:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 20:30:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:30:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:29,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:29,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:29,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:29,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:29,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:30:29,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:29,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:29,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:29,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486748116] [2020-09-24 20:30:29,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:29,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:30:29,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858620158] [2020-09-24 20:30:29,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:30:29,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:30:29,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:30:29,568 INFO L87 Difference]: Start difference. First operand 353 states and 395 transitions. Second operand 4 states. [2020-09-24 20:30:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:29,894 INFO L93 Difference]: Finished difference Result 689 states and 794 transitions. [2020-09-24 20:30:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:30:29,895 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 20:30:29,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:29,898 INFO L225 Difference]: With dead ends: 689 [2020-09-24 20:30:29,899 INFO L226 Difference]: Without dead ends: 511 [2020-09-24 20:30:29,899 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 20:30:29,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-09-24 20:30:29,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 427. [2020-09-24 20:30:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-09-24 20:30:29,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 485 transitions. [2020-09-24 20:30:29,921 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 485 transitions. Word has length 64 [2020-09-24 20:30:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:29,921 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 485 transitions. [2020-09-24 20:30:29,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:30:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 485 transitions. [2020-09-24 20:30:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 20:30:29,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:29,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:29,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 20:30:29,923 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:29,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-24 20:30:29,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:29,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444879260] [2020-09-24 20:30:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:29,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:30,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:30,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 20:30:30,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:30:30,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:30,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:30,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:30,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:30,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:30,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:30:30,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444879260] [2020-09-24 20:30:30,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:30,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:30:30,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491667549] [2020-09-24 20:30:30,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:30:30,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:30:30,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:30:30,062 INFO L87 Difference]: Start difference. First operand 427 states and 485 transitions. Second operand 4 states. [2020-09-24 20:30:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:30,323 INFO L93 Difference]: Finished difference Result 723 states and 835 transitions. [2020-09-24 20:30:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:30:30,324 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-24 20:30:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:30,326 INFO L225 Difference]: With dead ends: 723 [2020-09-24 20:30:30,326 INFO L226 Difference]: Without dead ends: 470 [2020-09-24 20:30:30,328 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 20:30:30,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-09-24 20:30:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 421. [2020-09-24 20:30:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-09-24 20:30:30,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 478 transitions. [2020-09-24 20:30:30,348 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 478 transitions. Word has length 64 [2020-09-24 20:30:30,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:30,348 INFO L479 AbstractCegarLoop]: Abstraction has 421 states and 478 transitions. [2020-09-24 20:30:30,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:30:30,349 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 478 transitions. [2020-09-24 20:30:30,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 20:30:30,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:30,350 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, 1, 1, 1] [2020-09-24 20:30:30,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 20:30:30,350 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:30,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:30,350 INFO L82 PathProgramCache]: Analyzing trace with hash -594310178, now seen corresponding path program 1 times [2020-09-24 20:30:30,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:30,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498295250] [2020-09-24 20:30:30,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:30,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 20:30:30,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:30,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 20:30:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:30:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-24 20:30:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:30:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:30,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:30:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:30,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:30,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:30:30,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:30:30,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:30:30,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:30,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:30:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:30:30,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:30:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:30:30,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 20:30:30,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498295250] [2020-09-24 20:30:30,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:30:30,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:30:30,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109826836] [2020-09-24 20:30:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:30:30,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:30:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:30:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:30:30,511 INFO L87 Difference]: Start difference. First operand 421 states and 478 transitions. Second operand 4 states. [2020-09-24 20:30:30,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:30:30,727 INFO L93 Difference]: Finished difference Result 421 states and 478 transitions. [2020-09-24 20:30:30,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:30:30,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-09-24 20:30:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:30:30,731 INFO L225 Difference]: With dead ends: 421 [2020-09-24 20:30:30,732 INFO L226 Difference]: Without dead ends: 419 [2020-09-24 20:30:30,732 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 20:30:30,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-09-24 20:30:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2020-09-24 20:30:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-24 20:30:30,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 469 transitions. [2020-09-24 20:30:30,759 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 469 transitions. Word has length 69 [2020-09-24 20:30:30,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:30:30,759 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 469 transitions. [2020-09-24 20:30:30,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:30:30,760 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 469 transitions. [2020-09-24 20:30:30,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 20:30:30,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:30,761 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:30,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 20:30:30,762 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:30,762 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-24 20:30:30,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:30,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162859532] [2020-09-24 20:30:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:30:30,796 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:30:30,796 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:30:30,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 20:30:30,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:30:30 BoogieIcfgContainer [2020-09-24 20:30:30,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:30:30,871 INFO L168 Benchmark]: Toolchain (without parser) took 35842.33 ms. Allocated memory was 146.8 MB in the beginning and 458.2 MB in the end (delta: 311.4 MB). Free memory was 101.9 MB in the beginning and 238.4 MB in the end (delta: -136.5 MB). Peak memory consumption was 174.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,872 INFO L168 Benchmark]: CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.00 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 170.3 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,873 INFO L168 Benchmark]: Boogie Preprocessor took 82.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 166.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,873 INFO L168 Benchmark]: RCFGBuilder took 835.32 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 104.1 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,874 INFO L168 Benchmark]: TraceAbstraction took 34174.77 ms. Allocated memory was 203.9 MB in the beginning and 458.2 MB in the end (delta: 254.3 MB). Free memory was 103.4 MB in the beginning and 238.4 MB in the end (delta: -135.0 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:30:30,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 741.00 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.3 MB in the beginning and 170.3 MB in the end (delta: -69.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.30 ms. Allocated memory is still 203.9 MB. Free memory was 170.3 MB in the beginning and 166.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 835.32 ms. Allocated memory is still 203.9 MB. Free memory was 166.9 MB in the beginning and 104.1 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34174.77 ms. Allocated memory was 203.9 MB in the beginning and 458.2 MB in the end (delta: 254.3 MB). Free memory was 103.4 MB in the beginning and 238.4 MB in the end (delta: -135.0 MB). Peak memory consumption was 119.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 34.0s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3150 SDtfs, 5738 SDslu, 11376 SDs, 0 SdLazy, 7208 SolverSat, 252 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 267 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 1967 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 926 NumberOfCodeBlocks, 926 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 835 ConstructedInterpolants, 0 QuantifiedInterpolants, 316620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 14/18 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...