/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=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:15:28,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:15:28,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:15:28,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:15:28,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:15:28,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:15:28,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:15:28,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:15:28,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:15:28,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:15:28,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:15:28,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:15:28,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:15:28,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:15:28,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:15:28,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:15:28,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:15:28,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:15:28,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:15:28,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:15:28,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:15:28,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:15:28,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:15:28,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:15:28,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:15:28,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:15:28,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:15:28,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:15:28,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:15:28,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:15:28,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:15:28,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:15:28,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:15:28,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:15:28,544 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:15:28,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:15:28,545 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:15:28,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:15:28,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:15:28,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:15:28,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:15:28,551 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 [2020-09-25 03:15:28,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:15:28,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:15:28,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:15:28,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:15:28,613 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:15:28,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:15:28,614 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:15:28,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:15:28,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:15:28,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:15:28,617 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:15:28,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:15:28,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:15:28,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:15:28,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:15:28,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:15:28,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:15:28,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:15:28,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:15:28,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:15:28,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:15:28,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:15:28,619 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:15:28,619 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:15:28,620 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:15:29,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:15:29,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:15:29,079 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:15:29,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:15:29,082 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:15:29,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 03:15:29,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f66b6d2d/6d68e162b0094a348b75b0775883d299/FLAG688a382ab [2020-09-25 03:15:29,845 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:15:29,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 03:15:29,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f66b6d2d/6d68e162b0094a348b75b0775883d299/FLAG688a382ab [2020-09-25 03:15:30,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f66b6d2d/6d68e162b0094a348b75b0775883d299 [2020-09-25 03:15:30,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:15:30,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:15:30,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:30,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:15:30,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:15:30,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b8ae939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30, skipping insertion in model container [2020-09-25 03:15:30,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:15:30,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:15:30,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:30,772 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:15:30,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:15:30,897 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:15:30,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30 WrapperNode [2020-09-25 03:15:30,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:15:30,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:15:30,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:15:30,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:15:30,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (1/1) ... [2020-09-25 03:15:30,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:15:30,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:15:30,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:15:30,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:15:30,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (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 [2020-09-25 03:15:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:15:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:15:31,057 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 03:15:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 03:15:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 03:15:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 03:15:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 03:15:31,058 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 03:15:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 03:15:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 03:15:31,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:15:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:15:31,059 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 03:15:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 03:15:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 03:15:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 03:15:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 03:15:31,060 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 03:15:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 03:15:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 03:15:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 03:15:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 03:15:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 03:15:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 03:15:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 03:15:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 03:15:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 03:15:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 03:15:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 03:15:31,064 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 03:15:31,065 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 03:15:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 03:15:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 03:15:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 03:15:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 03:15:31,066 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 03:15:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 03:15:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 03:15:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 03:15:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 03:15:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 03:15:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 03:15:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 03:15:31,070 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 03:15:31,071 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 03:15:31,072 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 03:15:31,073 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 03:15:31,074 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 03:15:31,075 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 03:15:31,076 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 03:15:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 03:15:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 03:15:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 03:15:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:15:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:15:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:15:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 03:15:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:15:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:15:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:15:31,481 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 03:15:31,685 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:15:31,686 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 03:15:31,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:31 BoogieIcfgContainer [2020-09-25 03:15:31,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:15:31,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:15:31,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:15:31,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:15:31,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:15:30" (1/3) ... [2020-09-25 03:15:31,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2366b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:31, skipping insertion in model container [2020-09-25 03:15:31,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:15:30" (2/3) ... [2020-09-25 03:15:31,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2366b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:15:31, skipping insertion in model container [2020-09-25 03:15:31,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:15:31" (3/3) ... [2020-09-25 03:15:31,702 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 03:15:31,714 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:15:31,726 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:15:31,751 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:15:31,789 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:15:31,789 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:15:31,790 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:15:31,790 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:15:31,790 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:15:31,790 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:15:31,790 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:15:31,791 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:15:31,822 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 03:15:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 03:15:31,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:31,834 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] [2020-09-25 03:15:31,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:31,842 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 03:15:31,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:31,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872217114] [2020-09-25 03:15:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:32,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 03:15:32,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:15:32,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-09-25 03:15:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 03:15:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:15:32,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:32,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:32,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:32,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:32,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:15:32,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:32,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:32,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:32,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:15:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 03:15:32,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 03:15:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:32,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:15:32,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:15:32,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 03:15:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:32,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:15:32,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872217114] [2020-09-25 03:15:32,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:32,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:15:32,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545915951] [2020-09-25 03:15:32,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:15:32,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:33,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:15:33,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:15:33,012 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 03:15:33,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:33,757 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 03:15:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:15:33,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 03:15:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:33,778 INFO L225 Difference]: With dead ends: 242 [2020-09-25 03:15:33,778 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 03:15:33,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:15:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 03:15:33,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 03:15:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 03:15:33,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 03:15:33,857 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 03:15:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:33,858 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 03:15:33,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:15:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 03:15:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:15:33,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:33,861 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] [2020-09-25 03:15:33,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:15:33,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:33,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 03:15:33,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:33,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376603549] [2020-09-25 03:15:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:33,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:34,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:35,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:35,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:38,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 03:15:38,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:15:38,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:15:38,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:15:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:15:38,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 03:15:38,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:38,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:38,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:15:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:38,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:38,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:15:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:39,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:39,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:15:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 03:15:39,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:39,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:39,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 03:15:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:39,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:39,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:39,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:15:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:39,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 03:15:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:39,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 03:15:39,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:39,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:15:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:15:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:39,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:15:39,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376603549] [2020-09-25 03:15:39,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:15:39,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 03:15:39,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597211411] [2020-09-25 03:15:39,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:15:39,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:39,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:15:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:15:39,145 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 03:15:39,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:39,811 INFO L93 Difference]: Finished difference Result 181 states and 199 transitions. [2020-09-25 03:15:39,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:15:39,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 03:15:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:39,815 INFO L225 Difference]: With dead ends: 181 [2020-09-25 03:15:39,815 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 03:15:39,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:15:39,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 03:15:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 94. [2020-09-25 03:15:39,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 03:15:39,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2020-09-25 03:15:39,835 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 51 [2020-09-25 03:15:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:39,836 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2020-09-25 03:15:39,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:15:39,836 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2020-09-25 03:15:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 03:15:39,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:39,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:39,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:15:39,840 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 884026993, now seen corresponding path program 1 times [2020-09-25 03:15:39,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:39,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975475387] [2020-09-25 03:15:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:39,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:40,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:40,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:44,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 03:15:44,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:15:44,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:15:44,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:15:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:15:44,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 03:15:44,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:44,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:44,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:44,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:44,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:15:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:44,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:44,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:44,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:44,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:44,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 03:15:44,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:44,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:44,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 03:15:44,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 03:15:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:45,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:45,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:45,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:45,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:15:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 03:15:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:15:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:45,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 03:15:45,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:15:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:15:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:15:45,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975475387] [2020-09-25 03:15:45,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:45,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:15:45,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674178723] [2020-09-25 03:15:45,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:15:45,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:15:45,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:15:45,153 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand 11 states. [2020-09-25 03:15:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:45,816 INFO L93 Difference]: Finished difference Result 170 states and 183 transitions. [2020-09-25 03:15:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:15:45,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-09-25 03:15:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:45,818 INFO L225 Difference]: With dead ends: 170 [2020-09-25 03:15:45,818 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 03:15:45,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:15:45,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 03:15:45,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-09-25 03:15:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 03:15:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 03:15:45,833 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 58 [2020-09-25 03:15:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:45,833 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 03:15:45,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:15:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 03:15:45,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 03:15:45,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:45,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:45,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:15:45,837 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:45,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:45,837 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 03:15:45,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:45,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346495043] [2020-09-25 03:15:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:45,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:46,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:50,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 03:15:50,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:15:50,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:15:50,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:15:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:15:50,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 03:15:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:50,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:50,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:50,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:15:50,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:15:50,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:15:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:51,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:15:51,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:51,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-25 03:15:51,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:15:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:51,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:15:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:51,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:15:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:51,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:51,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:15:51,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:51,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 03:15:51,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:51,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:15:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 03:15:51,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:51,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:51,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:15:51,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:51,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:15:51,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:15:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:51,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:15:51,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 03:15:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:51,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:15:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:51,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 03:15:51,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:15:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:15:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 03:15:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:15:51,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346495043] [2020-09-25 03:15:51,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:15:51,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:15:51,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553127761] [2020-09-25 03:15:51,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:15:51,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:15:51,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:15:51,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:15:51,359 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 13 states. [2020-09-25 03:15:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:15:52,055 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2020-09-25 03:15:52,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:15:52,056 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-09-25 03:15:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:15:52,059 INFO L225 Difference]: With dead ends: 170 [2020-09-25 03:15:52,059 INFO L226 Difference]: Without dead ends: 116 [2020-09-25 03:15:52,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 03:15:52,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-25 03:15:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-09-25 03:15:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 03:15:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2020-09-25 03:15:52,085 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 76 [2020-09-25 03:15:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:15:52,085 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2020-09-25 03:15:52,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:15:52,085 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2020-09-25 03:15:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-25 03:15:52,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:15:52,090 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:15:52,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:15:52,091 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:15:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:15:52,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 2 times [2020-09-25 03:15:52,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:15:52,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898411602] [2020-09-25 03:15:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:15:52,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:52,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:52,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:57,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:57,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 03:15:57,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:15:57,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-09-25 03:15:57,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-25 03:15:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 03:15:57,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 03:15:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:57,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:15:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:57,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:57,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:57,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:15:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:57,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:15:57,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:15:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:15:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:15:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:57,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:58,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:58,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:15:58,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-09-25 03:15:58,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 03:15:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:15:58,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:15:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:15:59,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:59,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-09-25 03:15:59,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:15:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:15:59,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:15:59,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:15:59,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:15:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:15:59,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:15:59,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:15:59,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:15:59,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:15:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 03:15:59,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:15:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:15:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:15:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:15:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:16:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 03:16:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:00,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:00,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:16:00,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:00,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 03:16:00,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:16:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 03:16:00,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 03:16:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:00,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 03:16:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:00,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:00,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:00,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 03:16:00,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:00,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 03:16:00,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 03:16:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:00,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 03:16:00,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:16:01,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898411602] [2020-09-25 03:16:01,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:01,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-09-25 03:16:01,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423998310] [2020-09-25 03:16:01,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-09-25 03:16:01,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:01,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-09-25 03:16:01,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1628, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 03:16:01,397 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 42 states. [2020-09-25 03:16:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:07,015 INFO L93 Difference]: Finished difference Result 165 states and 186 transitions. [2020-09-25 03:16:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-25 03:16:07,016 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 94 [2020-09-25 03:16:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:07,018 INFO L225 Difference]: With dead ends: 165 [2020-09-25 03:16:07,018 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 03:16:07,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=455, Invalid=6517, Unknown=0, NotChecked=0, Total=6972 [2020-09-25 03:16:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 03:16:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2020-09-25 03:16:07,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 03:16:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 147 transitions. [2020-09-25 03:16:07,038 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 147 transitions. Word has length 94 [2020-09-25 03:16:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:07,038 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 147 transitions. [2020-09-25 03:16:07,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-09-25 03:16:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 147 transitions. [2020-09-25 03:16:07,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 03:16:07,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:07,041 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:07,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:16:07,042 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:07,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:07,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1645330513, now seen corresponding path program 3 times [2020-09-25 03:16:07,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:07,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083411106] [2020-09-25 03:16:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:10,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 03:16:12,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:16:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 03:16:12,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 03:16:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 03:16:12,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:16:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:16:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:16:12,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:16:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:16:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:16:12,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:16:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:16:12,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:16:12,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 03:16:12,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:16:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:12,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:16:12,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 03:16:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:12,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:16:12,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 03:16:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 03:16:12,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:12,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 03:16:12,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:16:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:12,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 03:16:12,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 03:16:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:16:12,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:16:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:16:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:16:12,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:16:12,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-25 03:16:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:16:12,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:16:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:16:12,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:16:12,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:16:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:16:12,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083411106] [2020-09-25 03:16:12,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:16:12,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 03:16:12,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852371598] [2020-09-25 03:16:12,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 03:16:12,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:16:12,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 03:16:12,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:16:12,921 INFO L87 Difference]: Start difference. First operand 132 states and 147 transitions. Second operand 17 states. [2020-09-25 03:16:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:16:14,080 INFO L93 Difference]: Finished difference Result 190 states and 210 transitions. [2020-09-25 03:16:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 03:16:14,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 101 [2020-09-25 03:16:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:16:14,084 INFO L225 Difference]: With dead ends: 190 [2020-09-25 03:16:14,084 INFO L226 Difference]: Without dead ends: 146 [2020-09-25 03:16:14,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 03:16:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-25 03:16:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 127. [2020-09-25 03:16:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 03:16:14,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 140 transitions. [2020-09-25 03:16:14,097 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 140 transitions. Word has length 101 [2020-09-25 03:16:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:16:14,098 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 140 transitions. [2020-09-25 03:16:14,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 03:16:14,098 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 140 transitions. [2020-09-25 03:16:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 03:16:14,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:16:14,100 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:16:14,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:16:14,101 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:16:14,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:16:14,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1397149621, now seen corresponding path program 1 times [2020-09-25 03:16:14,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:16:14,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593855773] [2020-09-25 03:16:14,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:16:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:16:14,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:14,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:14,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:16:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking...