/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:50:00,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:50:00,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:50:00,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:50:00,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:50:00,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:50:00,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:50:00,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:50:00,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:50:00,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:50:00,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:50:00,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:50:00,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:50:00,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:50:00,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:50:00,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:50:00,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:50:00,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:50:00,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:50:00,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:50:00,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:50:00,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:50:00,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:50:00,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:50:00,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:50:00,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:50:00,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:50:00,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:50:00,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:50:00,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:50:00,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:50:00,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:50:00,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:50:00,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:50:00,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:50:00,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:50:00,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:50:00,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:50:00,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:50:00,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:50:00,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:50:00,473 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 [2020-10-12 15:50:00,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:50:00,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:50:00,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:50:00,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:50:00,497 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:50:00,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:50:00,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:50:00,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:50:00,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:50:00,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:50:00,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:50:00,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:50:00,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:50:00,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:50:00,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:50:00,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:50:00,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:50:00,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:50:00,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:50:00,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:50:00,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:50:00,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:50:00,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:50:00,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:50:00,502 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:50:00,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:50:00,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:50:00,827 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:50:00,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:50:00,832 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:50:00,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-12 15:50:00,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a5412a20/0bd24345ddfa4068abe29abd3da4ebe1/FLAGb3c822aea [2020-10-12 15:50:01,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:50:01,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2c_prepend_equal.i [2020-10-12 15:50:01,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a5412a20/0bd24345ddfa4068abe29abd3da4ebe1/FLAGb3c822aea [2020-10-12 15:50:01,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a5412a20/0bd24345ddfa4068abe29abd3da4ebe1 [2020-10-12 15:50:01,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:50:01,761 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:50:01,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:50:01,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:50:01,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:50:01,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:50:01" (1/1) ... [2020-10-12 15:50:01,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322abbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:01, skipping insertion in model container [2020-10-12 15:50:01,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:50:01" (1/1) ... [2020-10-12 15:50:01,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:50:01,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:50:02,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:50:02,289 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:50:02,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:50:02,408 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:50:02,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02 WrapperNode [2020-10-12 15:50:02,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:50:02,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:50:02,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:50:02,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:50:02,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (1/1) ... [2020-10-12 15:50:02,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:50:02,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:50:02,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:50:02,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:50:02,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (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 [2020-10-12 15:50:02,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:50:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:50:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:50:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:50:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:50:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-12 15:50:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2020-10-12 15:50:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2020-10-12 15:50:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_prepend [2020-10-12 15:50:02,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:50:02,551 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:50:02,552 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:50:02,553 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:50:02,554 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:50:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:50:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:50:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:50:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:50:02,555 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:50:02,556 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:50:02,557 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:50:02,558 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:50:02,559 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:50:02,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:50:02,561 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:50:02,562 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:50:02,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:50:02,564 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:50:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:50:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:50:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:50:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:50:02,565 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-12 15:50:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:50:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:50:02,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_prepend [2020-10-12 15:50:02,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:50:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:50:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:50:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:50:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:50:02,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:50:02,999 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:50:03,201 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:50:03,201 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 15:50:03,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:50:03 BoogieIcfgContainer [2020-10-12 15:50:03,211 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:50:03,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:50:03,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:50:03,219 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:50:03,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:50:01" (1/3) ... [2020-10-12 15:50:03,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc4e831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:50:03, skipping insertion in model container [2020-10-12 15:50:03,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:50:02" (2/3) ... [2020-10-12 15:50:03,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dc4e831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:50:03, skipping insertion in model container [2020-10-12 15:50:03,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:50:03" (3/3) ... [2020-10-12 15:50:03,232 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_prepend_equal.i [2020-10-12 15:50:03,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:50:03,251 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:50:03,266 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:50:03,287 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:50:03,287 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:50:03,287 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:50:03,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:50:03,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:50:03,288 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:50:03,288 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:50:03,288 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:50:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-12 15:50:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:50:03,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:03,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:03,318 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:03,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:03,323 INFO L82 PathProgramCache]: Analyzing trace with hash -301799002, now seen corresponding path program 1 times [2020-10-12 15:50:03,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:03,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53984415] [2020-10-12 15:50:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:03,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:03,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:03,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:50:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-12 15:50:03,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:03,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-12 15:50:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:50:03,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:04,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:04,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:04,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:50:04,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:04,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:04,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:04,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:04,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:04,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:04,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:04,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:50:04,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 15:50:04,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:04,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:04,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:04,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:04,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:04,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:04,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:50:04,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:04,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:04,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:04,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:04,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:04,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:04,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:04,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 15:50:04,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:50:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:04,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:04,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:04,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:04,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:04,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:04,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:50:04,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:04,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:04,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:04,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 15:50:04,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53984415] [2020-10-12 15:50:04,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:50:04,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:50:04,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567047521] [2020-10-12 15:50:04,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:50:04,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:04,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:50:04,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:50:04,291 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-12 15:50:04,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:04,607 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-12 15:50:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-12 15:50:04,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-12 15:50:04,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:04,626 INFO L225 Difference]: With dead ends: 97 [2020-10-12 15:50:04,630 INFO L226 Difference]: Without dead ends: 39 [2020-10-12 15:50:04,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:50:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-12 15:50:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-12 15:50:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 15:50:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-12 15:50:04,696 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 36 [2020-10-12 15:50:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:04,709 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-12 15:50:04,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:50:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-12 15:50:04,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-12 15:50:04,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:04,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:04,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:50:04,723 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1245592506, now seen corresponding path program 1 times [2020-10-12 15:50:04,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:04,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099047387] [2020-10-12 15:50:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:05,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 15:50:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 15:50:09,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:09,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:50:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 15:50:09,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:10,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:10,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:10,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:10,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:50:10,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:10,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:10,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:10,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:10,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:10,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:10,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:10,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:10,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:10,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-12 15:50:10,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:10,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:10,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:10,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:10,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:10,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:50:10,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:11,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:11,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-12 15:50:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:50:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:11,457 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2020-10-12 15:50:11,841 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2020-10-12 15:50:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:11,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:12,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:12,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:12,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:12,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 15:50:12,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:12,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:12,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:12,307 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:12,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099047387] [2020-10-12 15:50:12,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:12,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:50:12,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449653916] [2020-10-12 15:50:12,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:50:12,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:12,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:50:12,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:50:12,312 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 21 states. [2020-10-12 15:50:12,724 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 15:50:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:14,301 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-10-12 15:50:14,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:50:14,302 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-10-12 15:50:14,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:14,306 INFO L225 Difference]: With dead ends: 58 [2020-10-12 15:50:14,307 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:50:14,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:50:14,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:50:14,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-12 15:50:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:50:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-12 15:50:14,321 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 36 [2020-10-12 15:50:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:14,321 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-12 15:50:14,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:50:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-12 15:50:14,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:50:14,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:14,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:14,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:50:14,324 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:14,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:14,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1069657988, now seen corresponding path program 1 times [2020-10-12 15:50:14,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:14,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261387105] [2020-10-12 15:50:14,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:14,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:17,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:17,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:50:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:17,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3179 [2020-10-12 15:50:17,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:50:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:50:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:17,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:17,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:50:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:17,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:17,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:17,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:17,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:17,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 15:50:17,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:17,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:17,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:17,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:17,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:17,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:17,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:50:17,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:17,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:18,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:18,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 564 [2020-10-12 15:50:18,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:50:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:18,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:18,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:18,905 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-12 15:50:19,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:19,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:19,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:19,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:50:19,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:19,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:19,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261387105] [2020-10-12 15:50:19,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:19,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:50:19,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925653183] [2020-10-12 15:50:19,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:50:19,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:19,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:50:19,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:50:19,281 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 22 states. [2020-10-12 15:50:20,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:20,947 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2020-10-12 15:50:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:50:20,951 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 39 [2020-10-12 15:50:20,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:20,953 INFO L225 Difference]: With dead ends: 70 [2020-10-12 15:50:20,953 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:50:20,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:50:20,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:50:20,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-12 15:50:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:50:20,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-12 15:50:20,965 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-12 15:50:20,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:20,966 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-12 15:50:20,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:50:20,966 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-12 15:50:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-12 15:50:20,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:20,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:20,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:50:20,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:20,969 INFO L82 PathProgramCache]: Analyzing trace with hash -676630978, now seen corresponding path program 1 times [2020-10-12 15:50:20,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:20,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856778439] [2020-10-12 15:50:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:22,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:22,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-12 15:50:22,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:50:22,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2010 [2020-10-12 15:50:22,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:50:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:50:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:50:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:23,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:23,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:23,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:23,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:50:23,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:23,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:23,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:23,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:23,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:23,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:50:23,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:23,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:23,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:23,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:23,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:23,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 15:50:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:50:23,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:23,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:23,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:23,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:23,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:23,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:50:23,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:50:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:23,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:50:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:23,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856778439] [2020-10-12 15:50:23,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:23,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:50:23,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791535131] [2020-10-12 15:50:23,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:50:23,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:23,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:50:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:50:23,645 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 18 states. [2020-10-12 15:50:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:24,598 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2020-10-12 15:50:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:50:24,599 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-12 15:50:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:24,601 INFO L225 Difference]: With dead ends: 90 [2020-10-12 15:50:24,601 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:50:24,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:50:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:50:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 15:50:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:50:24,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-12 15:50:24,627 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 39 [2020-10-12 15:50:24,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:24,628 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-12 15:50:24,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:50:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-12 15:50:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:50:24,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:24,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:24,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:50:24,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:24,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1200382480, now seen corresponding path program 1 times [2020-10-12 15:50:24,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:24,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55188972] [2020-10-12 15:50:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:24,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:26,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:50:26,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-12 15:50:26,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:50:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:26,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:50:26,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:27,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:27,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:27,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:27,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:27,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:27,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:27,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:27,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:27,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:27,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:27,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:27,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:27,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-12 15:50:27,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:50:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:27,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:50:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:27,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:27,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:27,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:50:27,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:27,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:50:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:50:27,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:28,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:28,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:28,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:28,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-12 15:50:28,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:50:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:28,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:28,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:28,805 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2020-10-12 15:50:29,365 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2020-10-12 15:50:29,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:29,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:29,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 15:50:29,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:30,194 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2020-10-12 15:50:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:50:30,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55188972] [2020-10-12 15:50:30,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:30,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:50:30,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306341737] [2020-10-12 15:50:30,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:50:30,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:30,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:50:30,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:50:30,219 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 23 states. [2020-10-12 15:50:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:33,422 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-12 15:50:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:50:33,423 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 40 [2020-10-12 15:50:33,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:33,425 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:50:33,425 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:50:33,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 15:50:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:50:33,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-12 15:50:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 15:50:33,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-12 15:50:33,438 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 40 [2020-10-12 15:50:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:33,438 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-12 15:50:33,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:50:33,439 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-12 15:50:33,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:50:33,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:33,441 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:33,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:50:33,441 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:33,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2128308850, now seen corresponding path program 1 times [2020-10-12 15:50:33,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:33,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189216481] [2020-10-12 15:50:33,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:35,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2478 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:35,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 15:50:35,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:36,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:36,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:36,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:50:36,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-12 15:50:36,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:50:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:36,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:50:36,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:36,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:36,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:36,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:36,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:50:36,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:50:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:36,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:36,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:50:36,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:36,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:50:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:50:36,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:36,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:36,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:37,043 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-10-12 15:50:37,331 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-12 15:50:37,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:37,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:37,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:37,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:37,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:50:37,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189216481] [2020-10-12 15:50:37,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:37,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 15:50:37,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981044308] [2020-10-12 15:50:37,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 15:50:37,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:37,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 15:50:37,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:50:37,667 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 26 states. [2020-10-12 15:50:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:39,204 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 15:50:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:50:39,210 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 46 [2020-10-12 15:50:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:39,212 INFO L225 Difference]: With dead ends: 68 [2020-10-12 15:50:39,212 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 15:50:39,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=108, Invalid=1082, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 15:50:39,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 15:50:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 57. [2020-10-12 15:50:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 15:50:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-10-12 15:50:39,235 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 46 [2020-10-12 15:50:39,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:39,235 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-10-12 15:50:39,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 15:50:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-10-12 15:50:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:50:39,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:39,237 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:50:39,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:50:39,237 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:39,238 INFO L82 PathProgramCache]: Analyzing trace with hash 698188390, now seen corresponding path program 1 times [2020-10-12 15:50:39,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:39,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386451850] [2020-10-12 15:50:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:39,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:39,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:50:39,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:39,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:39,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:50:39,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:50:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:50:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:39,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:50:39,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:50:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:39,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:39,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:39,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:39,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:39,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:50:39,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:39,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:39,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:39,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-12 15:50:39,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386451850] [2020-10-12 15:50:39,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:50:39,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:50:39,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411418626] [2020-10-12 15:50:39,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:50:39,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:39,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:50:39,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:50:39,518 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 7 states. [2020-10-12 15:50:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:39,859 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2020-10-12 15:50:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:50:39,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-12 15:50:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:39,861 INFO L225 Difference]: With dead ends: 80 [2020-10-12 15:50:39,861 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 15:50:39,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-12 15:50:39,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 15:50:39,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-12 15:50:39,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 15:50:39,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-10-12 15:50:39,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 43 [2020-10-12 15:50:39,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:39,870 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-10-12 15:50:39,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:50:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-10-12 15:50:39,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:50:39,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:39,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:39,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:50:39,872 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:39,873 INFO L82 PathProgramCache]: Analyzing trace with hash -2140293592, now seen corresponding path program 1 times [2020-10-12 15:50:39,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:39,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693154137] [2020-10-12 15:50:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:41,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:44,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:44,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 15:50:44,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:44,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4359 [2020-10-12 15:50:44,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 15:50:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:44,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 15:50:44,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:44,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:44,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:44,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:44,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:44,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:44,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:44,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:44,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:44,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:44,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:44,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:44,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:50:44,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 15:50:44,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:50:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:50:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:44,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:44,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:44,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:44,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:50:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:44,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:44,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:44,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:44,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:50:44,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:44,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:44,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:44,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:50:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:45,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:45,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:45,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:45,665 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 15:50:45,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:45,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:50:45,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693154137] [2020-10-12 15:50:45,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:45,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 15:50:45,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219385763] [2020-10-12 15:50:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 15:50:45,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 15:50:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:50:45,949 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 27 states. [2020-10-12 15:50:46,384 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-12 15:50:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:50:47,463 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-12 15:50:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:50:47,463 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 49 [2020-10-12 15:50:47,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:50:47,465 INFO L225 Difference]: With dead ends: 67 [2020-10-12 15:50:47,465 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:50:47,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 15:50:47,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:50:47,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-10-12 15:50:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-12 15:50:47,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-12 15:50:47,477 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 49 [2020-10-12 15:50:47,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:50:47,477 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-12 15:50:47,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 15:50:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-12 15:50:47,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:50:47,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:50:47,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:50:47,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:50:47,479 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:50:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:50:47,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1747266582, now seen corresponding path program 1 times [2020-10-12 15:50:47,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:50:47,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297572777] [2020-10-12 15:50:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:50:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:50,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-12 15:50:50,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:50:50,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2583 [2020-10-12 15:50:50,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:50,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 15:50:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:50:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 15:50:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:50:50,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:50:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:50,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:50:50,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:50:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:50:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:50,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:50:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:50:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:50,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:50:50,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:50,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 15:50:50,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:50:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:50,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:50:50,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:50,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:50,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:50:50,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:50:50,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:50,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:50:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:50,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:50,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:50:50,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:50,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:50,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:50,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:50:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:50,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:50,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:51,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:50:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:51,627 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-12 15:50:52,283 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-12 15:50:52,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:50:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:50:52,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:50:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:50:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:50:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:50:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:50:52,622 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-10-12 15:50:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:50:52,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297572777] [2020-10-12 15:50:52,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:50:52,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 15:50:52,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737011619] [2020-10-12 15:50:52,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 15:50:52,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:50:52,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 15:50:52,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:50:52,641 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 28 states. [2020-10-12 15:50:53,175 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-12 15:50:53,572 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 15:50:53,929 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-12 15:50:54,330 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-12 15:50:55,927 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-12 15:51:00,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:00,462 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-10-12 15:51:00,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:51:00,464 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 49 [2020-10-12 15:51:00,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:00,465 INFO L225 Difference]: With dead ends: 79 [2020-10-12 15:51:00,465 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 15:51:00,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:51:00,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 15:51:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-10-12 15:51:00,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:51:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2020-10-12 15:51:00,475 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 49 [2020-10-12 15:51:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:00,476 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2020-10-12 15:51:00,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 15:51:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2020-10-12 15:51:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:51:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:00,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-12 15:51:00,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:51:00,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1924550172, now seen corresponding path program 1 times [2020-10-12 15:51:00,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:00,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136562459] [2020-10-12 15:51:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:05,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:05,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:51:05,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:51:05,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-12 15:51:05,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:51:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:51:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:51:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:51:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:06,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:06,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:06,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:06,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:51:06,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:06,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:06,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:06,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:06,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:06,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:06,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:51:06,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-12 15:51:06,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:51:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:06,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:51:06,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:07,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:07,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:07,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:07,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:07,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:51:07,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:07,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:51:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:07,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:51:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:07,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:07,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:07,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:07,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 15:51:07,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:51:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:07,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:51:07,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:07,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:51:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:08,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:08,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:51:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:08,431 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-12 15:51:08,855 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-12 15:51:09,049 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-12 15:51:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:09,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:09,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:09,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 15:51:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:09,673 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 39 [2020-10-12 15:51:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:51:09,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136562459] [2020-10-12 15:51:09,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:09,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 15:51:09,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094039579] [2020-10-12 15:51:09,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 15:51:09,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:09,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 15:51:09,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=862, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:51:09,695 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand 31 states. [2020-10-12 15:51:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:12,857 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-10-12 15:51:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:51:12,858 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 50 [2020-10-12 15:51:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:12,860 INFO L225 Difference]: With dead ends: 76 [2020-10-12 15:51:12,860 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 15:51:12,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=176, Invalid=1986, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 15:51:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 15:51:12,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-12 15:51:12,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-12 15:51:12,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-10-12 15:51:12,871 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 50 [2020-10-12 15:51:12,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:12,872 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-10-12 15:51:12,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 15:51:12,872 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-10-12 15:51:12,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:51:12,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:12,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-12 15:51:12,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:51:12,874 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:12,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:12,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1669352546, now seen corresponding path program 1 times [2020-10-12 15:51:12,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:12,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468917912] [2020-10-12 15:51:12,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:12,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:13,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:17,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:17,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:51:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:51:17,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 15:51:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:51:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:51:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:51:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:17,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:17,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:17,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:17,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:17,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:51:17,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:17,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:17,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:17,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:51:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:51:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:18,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:18,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:18,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:18,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:18,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:51:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:51:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:51:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:18,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:18,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:51:18,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:51:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:51:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:18,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:18,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:51:18,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468917912] [2020-10-12 15:51:18,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:18,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 15:51:18,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237634024] [2020-10-12 15:51:18,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 15:51:18,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:18,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 15:51:18,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-12 15:51:18,574 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 19 states. [2020-10-12 15:51:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:19,937 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2020-10-12 15:51:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:51:19,938 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-12 15:51:19,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:19,939 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:51:19,939 INFO L226 Difference]: Without dead ends: 61 [2020-10-12 15:51:19,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:51:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-12 15:51:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-12 15:51:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 15:51:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-12 15:51:19,948 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 50 [2020-10-12 15:51:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:19,949 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-12 15:51:19,949 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 15:51:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-12 15:51:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:51:19,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:19,950 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-12 15:51:19,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:51:19,950 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:19,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:19,951 INFO L82 PathProgramCache]: Analyzing trace with hash -754306542, now seen corresponding path program 1 times [2020-10-12 15:51:19,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:19,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127702414] [2020-10-12 15:51:19,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:20,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:21,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:25,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:51:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:25,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:25,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:25,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:25,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:25,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:51:25,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:25,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:51:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:26,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:26,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:26,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:26,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:51:26,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:26,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:26,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:26,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:26,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:26,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:26,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:51:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:27,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-12 15:51:27,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:51:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:27,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:51:27,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:27,680 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-12 15:51:28,019 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-10-12 15:51:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:28,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:28,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:28,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:28,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:51:28,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:51:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:28,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:28,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:28,362 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-10-12 15:51:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:51:28,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127702414] [2020-10-12 15:51:28,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:28,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 15:51:28,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219890775] [2020-10-12 15:51:28,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 15:51:28,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:28,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 15:51:28,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:51:28,388 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 30 states. [2020-10-12 15:51:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:31,695 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2020-10-12 15:51:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:51:31,696 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 53 [2020-10-12 15:51:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:31,697 INFO L225 Difference]: With dead ends: 78 [2020-10-12 15:51:31,697 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:51:31,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=180, Invalid=2076, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:51:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:51:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-10-12 15:51:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:51:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-12 15:51:31,707 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 53 [2020-10-12 15:51:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:31,707 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-12 15:51:31,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 15:51:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-12 15:51:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:51:31,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:31,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-12 15:51:31,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:51:31,709 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1908624582, now seen corresponding path program 2 times [2020-10-12 15:51:31,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:31,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079359270] [2020-10-12 15:51:31,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:31,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:51:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:51:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:51:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:51:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:37,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:51:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:51:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:37,799 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-10-12 15:51:38,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:38,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:38,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:38,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:38,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:51:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:38,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:51:38,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:38,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:38,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:51:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:38,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:38,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:38,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:38,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:51:38,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:39,346 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 60 [2020-10-12 15:51:39,942 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2020-10-12 15:51:40,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:40,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:51:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:40,604 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-12 15:51:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:51:40,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079359270] [2020-10-12 15:51:40,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:40,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 15:51:40,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728019551] [2020-10-12 15:51:40,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 15:51:40,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 15:51:40,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=808, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:51:40,631 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 30 states. [2020-10-12 15:51:44,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:44,171 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2020-10-12 15:51:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:51:44,171 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-12 15:51:44,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:44,173 INFO L225 Difference]: With dead ends: 76 [2020-10-12 15:51:44,173 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 15:51:44,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=140, Invalid=1752, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 15:51:44,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 15:51:44,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-10-12 15:51:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 15:51:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-12 15:51:44,185 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 54 [2020-10-12 15:51:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:44,185 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-12 15:51:44,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 15:51:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-12 15:51:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-12 15:51:44,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:44,186 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-12 15:51:44,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:51:44,187 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:44,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1800685752, now seen corresponding path program 3 times [2020-10-12 15:51:44,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:44,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319129153] [2020-10-12 15:51:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:44,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:46,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:49,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:49,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 15:51:49,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:51:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 15:51:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-12 15:51:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:51:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 15:51:49,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:49,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:49,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:49,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:49,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:49,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:51:49,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:49,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:49,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:49,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:49,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:50,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:50,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:51:50,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:51:50,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:50,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:50,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:50,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:51:50,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:50,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:50,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:51,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:51:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:51,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:51,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:51,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:51,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:51,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 15:51:51,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:51:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:51,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:51,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:51:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 15:51:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:51:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:51:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:52,236 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-12 15:51:52,615 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 15:51:52,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:52,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:51:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:51:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:51:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:53,435 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-10-12 15:51:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:51:53,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319129153] [2020-10-12 15:51:53,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:53,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 15:51:53,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658384953] [2020-10-12 15:51:53,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 15:51:53,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:53,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 15:51:53,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 15:51:53,459 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 34 states. [2020-10-12 15:51:54,208 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-12 15:51:55,030 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-12 15:51:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:57,208 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-10-12 15:51:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:51:57,210 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 60 [2020-10-12 15:51:57,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:57,211 INFO L225 Difference]: With dead ends: 69 [2020-10-12 15:51:57,211 INFO L226 Difference]: Without dead ends: 67 [2020-10-12 15:51:57,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 15:51:57,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-12 15:51:57,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-10-12 15:51:57,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 15:51:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-10-12 15:51:57,222 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 60 [2020-10-12 15:51:57,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:57,223 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-10-12 15:51:57,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 15:51:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-10-12 15:51:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 15:51:57,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:57,224 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 15:51:57,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:51:57,224 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:57,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1238542588, now seen corresponding path program 2 times [2020-10-12 15:51:57,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:57,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369312608] [2020-10-12 15:51:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:51:58,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 15:51:58,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:51:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:51:58,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:51:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:51:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:51:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:51:58,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:51:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:51:58,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:51:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:51:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:51:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:51:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:51:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:51:58,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:51:58,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:51:58,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:51:58,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:51:58,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:51:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:51:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:51:58,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:51:58,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:51:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 15:51:58,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369312608] [2020-10-12 15:51:58,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:51:58,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 15:51:58,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588696880] [2020-10-12 15:51:58,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 15:51:58,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:51:58,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 15:51:58,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 15:51:58,387 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 13 states. [2020-10-12 15:51:58,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:51:58,909 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-10-12 15:51:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 15:51:58,910 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-12 15:51:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:51:58,912 INFO L225 Difference]: With dead ends: 83 [2020-10-12 15:51:58,912 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 15:51:58,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:51:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 15:51:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2020-10-12 15:51:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 15:51:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-12 15:51:58,923 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 57 [2020-10-12 15:51:58,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:51:58,924 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-12 15:51:58,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 15:51:58,924 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-12 15:51:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 15:51:58,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:51:58,925 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:51:58,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:51:58,925 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:51:58,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:51:58,925 INFO L82 PathProgramCache]: Analyzing trace with hash -259843696, now seen corresponding path program 4 times [2020-10-12 15:51:58,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:51:58,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395885053] [2020-10-12 15:51:58,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:51:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:51:58,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:03,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:52:03,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:04,207 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2020-10-12 15:52:04,455 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-10-12 15:52:04,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:52:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:04,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:04,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:52:04,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:04,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:52:04,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:52:04,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:04,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:52:04,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:52:04,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:52:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:04,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:05,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:05,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:52:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:06,244 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-12 15:52:06,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:06,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:52:06,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:06,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:52:06,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:06,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:52:06,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:06,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:06,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:06,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:06,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:52:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:52:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:06,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:52:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:06,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:52:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:07,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:07,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:52:07,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:07,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-12 15:52:07,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:52:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:07,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:52:07,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:08,424 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 73 [2020-10-12 15:52:09,616 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2020-10-12 15:52:10,811 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 132 [2020-10-12 15:52:10,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:10,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:10,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:10,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:10,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:10,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:52:10,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:10,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:10,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:11,507 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 44 [2020-10-12 15:52:11,535 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:52:11,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395885053] [2020-10-12 15:52:11,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:52:11,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 15:52:11,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337302897] [2020-10-12 15:52:11,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 15:52:11,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:52:11,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 15:52:11,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=921, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:52:11,537 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 32 states. [2020-10-12 15:52:12,882 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-12 15:52:16,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:52:16,160 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2020-10-12 15:52:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:52:16,161 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 58 [2020-10-12 15:52:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:52:16,162 INFO L225 Difference]: With dead ends: 87 [2020-10-12 15:52:16,162 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 15:52:16,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=166, Invalid=2090, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:52:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 15:52:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-10-12 15:52:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:52:16,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-12 15:52:16,174 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 58 [2020-10-12 15:52:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:52:16,174 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-12 15:52:16,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 15:52:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-12 15:52:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-12 15:52:16,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:52:16,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-12 15:52:16,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:52:16,176 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:52:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:52:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 89143998, now seen corresponding path program 3 times [2020-10-12 15:52:16,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:52:16,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770584034] [2020-10-12 15:52:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:52:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:16,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:21,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:21,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 15:52:21,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:52:21,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:21,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:52:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:21,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:52:21,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:21,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:52:21,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:52:21,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:22,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:52:22,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:22,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:52:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:52:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:52:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:23,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:52:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:23,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:23,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:23,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:23,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:52:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:23,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:23,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:23,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:23,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:52:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:23,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:52:23,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:23,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:52:23,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:24,184 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-10-12 15:52:24,539 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2020-10-12 15:52:24,788 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 15:52:24,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:24,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:24,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:24,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:52:25,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770584034] [2020-10-12 15:52:25,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:52:25,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 15:52:25,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596946133] [2020-10-12 15:52:25,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 15:52:25,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:52:25,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 15:52:25,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=1038, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 15:52:25,137 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 34 states. [2020-10-12 15:52:25,695 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-10-12 15:52:26,372 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-12 15:52:26,981 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-10-12 15:52:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:52:28,641 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-10-12 15:52:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:52:28,642 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 63 [2020-10-12 15:52:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:52:28,643 INFO L225 Difference]: With dead ends: 82 [2020-10-12 15:52:28,644 INFO L226 Difference]: Without dead ends: 79 [2020-10-12 15:52:28,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=182, Invalid=2074, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:52:28,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-12 15:52:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-12 15:52:28,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:52:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-12 15:52:28,661 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 63 [2020-10-12 15:52:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:52:28,661 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-12 15:52:28,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 15:52:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-12 15:52:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-12 15:52:28,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:52:28,663 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2020-10-12 15:52:28,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:52:28,663 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:52:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:52:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1531461618, now seen corresponding path program 5 times [2020-10-12 15:52:28,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:52:28,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663341827] [2020-10-12 15:52:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:52:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:31,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:33,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 15:52:33,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:33,908 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 15:52:34,071 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-12 15:52:34,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:52:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:34,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:34,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:52:34,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:34,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:52:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:35,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:35,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:52:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:36,047 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 44 [2020-10-12 15:52:36,381 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2020-10-12 15:52:36,606 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-10-12 15:52:36,925 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 55 [2020-10-12 15:52:37,099 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-12 15:52:37,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:37,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:52:37,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:52:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:37,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:52:37,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:52:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:37,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:37,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:37,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:37,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:52:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:37,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:52:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:37,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:37,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:38,013 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-12 15:52:38,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:52:38,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:38,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:38,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:52:38,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:52:38,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:39,256 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 62 [2020-10-12 15:52:40,192 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2020-10-12 15:52:41,916 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 146 DAG size of output: 145 [2020-10-12 15:52:41,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:41,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:41,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:41,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:41,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 15:52:41,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:41,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:41,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:42,632 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 37 [2020-10-12 15:52:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:52:42,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663341827] [2020-10-12 15:52:42,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:52:42,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 15:52:42,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703392941] [2020-10-12 15:52:42,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 15:52:42,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:52:42,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 15:52:42,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 15:52:42,673 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 36 states. [2020-10-12 15:52:43,634 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-10-12 15:52:44,846 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 15:52:45,127 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-12 15:52:46,126 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-10-12 15:52:46,954 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 115 [2020-10-12 15:52:47,849 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2020-10-12 15:52:48,231 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-12 15:52:49,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:52:49,744 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-10-12 15:52:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 15:52:49,745 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 64 [2020-10-12 15:52:49,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:52:49,747 INFO L225 Difference]: With dead ends: 90 [2020-10-12 15:52:49,747 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 15:52:49,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=202, Invalid=2660, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 15:52:49,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 15:52:49,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2020-10-12 15:52:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 15:52:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2020-10-12 15:52:49,757 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 64 [2020-10-12 15:52:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:52:49,757 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2020-10-12 15:52:49,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 15:52:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2020-10-12 15:52:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-12 15:52:49,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:52:49,758 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:52:49,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:52:49,758 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:52:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:52:49,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1471046938, now seen corresponding path program 4 times [2020-10-12 15:52:49,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:52:49,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900861073] [2020-10-12 15:52:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:52:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:54,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:52:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:52:55,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:55,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:55,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:52:55,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:52:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:52:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:55,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:55,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:52:55,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:55,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-12 15:52:55,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:52:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:55,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:52:55,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:55,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:55,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:55,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:55,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:52:55,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:55,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:52:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:55,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:55,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:55,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:55,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:52:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:56,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:56,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:52:56,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:56,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 15:52:56,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:52:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:56,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:52:56,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:56,755 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-12 15:52:57,037 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-12 15:52:57,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:52:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:52:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:52:57,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:52:57,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:52:57,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:52:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:52:57,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900861073] [2020-10-12 15:52:57,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:52:57,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 15:52:57,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362167009] [2020-10-12 15:52:57,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 15:52:57,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:52:57,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 15:52:57,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=864, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:52:57,480 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand 31 states. [2020-10-12 15:52:58,050 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 15:53:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:00,387 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2020-10-12 15:53:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 15:53:00,389 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 61 [2020-10-12 15:53:00,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:00,390 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:53:00,390 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 15:53:00,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 15:53:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 15:53:00,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-10-12 15:53:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 15:53:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-12 15:53:00,400 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 61 [2020-10-12 15:53:00,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:00,400 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-12 15:53:00,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 15:53:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-12 15:53:00,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:53:00,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:00,401 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:53:00,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:53:00,401 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:00,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:00,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1642226918, now seen corresponding path program 6 times [2020-10-12 15:53:00,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:00,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367949955] [2020-10-12 15:53:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:05,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:05,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:05,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 15:53:05,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:53:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5305 [2020-10-12 15:53:05,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:53:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:05,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:53:05,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:06,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:06,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:06,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:06,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:53:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:06,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:06,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:06,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 15:53:06,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:06,718 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 15:53:07,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:07,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:07,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:07,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:07,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:53:07,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:53:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:53:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:07,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:07,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:07,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:07,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:07,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:53:07,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:53:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:07,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:07,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:07,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 15:53:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:07,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:07,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:53:07,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:07,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-12 15:53:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:53:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:53:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:07,956 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-12 15:53:08,224 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-12 15:53:08,437 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 15:53:08,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:08,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:53:08,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:08,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:08,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:53:08,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367949955] [2020-10-12 15:53:08,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:53:08,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 15:53:08,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435531545] [2020-10-12 15:53:08,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 15:53:08,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:08,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 15:53:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:53:08,816 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 33 states. [2020-10-12 15:53:10,119 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-12 15:53:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:12,565 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2020-10-12 15:53:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 15:53:12,566 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2020-10-12 15:53:12,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:12,567 INFO L225 Difference]: With dead ends: 87 [2020-10-12 15:53:12,568 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 15:53:12,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=177, Invalid=2079, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:53:12,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 15:53:12,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 15:53:12,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 15:53:12,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-10-12 15:53:12,576 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 62 [2020-10-12 15:53:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:12,577 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-10-12 15:53:12,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 15:53:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-10-12 15:53:12,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 15:53:12,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:12,578 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-12 15:53:12,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:53:12,578 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:12,578 INFO L82 PathProgramCache]: Analyzing trace with hash 105094244, now seen corresponding path program 7 times [2020-10-12 15:53:12,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:12,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591388937] [2020-10-12 15:53:12,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:12,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:12,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:17,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:17,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 15:53:17,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:17,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-12 15:53:17,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-12 15:53:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:17,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 15:53:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:18,045 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-12 15:53:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:18,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:18,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:18,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:53:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:18,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:18,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:18,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:20,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1789 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:53:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:20,646 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-12 15:53:20,958 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-12 15:53:21,146 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-12 15:53:21,365 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-10-12 15:53:21,542 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2020-10-12 15:53:21,918 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2020-10-12 15:53:22,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2020-10-12 15:53:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:22,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:22,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:53:22,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:53:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:22,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:22,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:22,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:22,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:53:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:22,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:22,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:22,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:23,267 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-12 15:53:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:53:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:23,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:23,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:23,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:53:23,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:25,913 WARN L193 SmtUtils]: Spent 730.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2020-10-12 15:53:27,344 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 87 [2020-10-12 15:53:29,242 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 180 [2020-10-12 15:53:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:29,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:29,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:29,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:29,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:29,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 15:53:29,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:29,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:29,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:53:30,243 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-12 15:53:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:53:30,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591388937] [2020-10-12 15:53:30,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:53:30,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 15:53:30,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199054825] [2020-10-12 15:53:30,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 15:53:30,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:30,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 15:53:30,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1251, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:53:30,295 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 37 states. [2020-10-12 15:53:31,271 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2020-10-12 15:53:32,426 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-12 15:53:32,858 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2020-10-12 15:53:33,340 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-12 15:53:34,050 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 15:53:38,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:38,371 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2020-10-12 15:53:38,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:53:38,372 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 68 [2020-10-12 15:53:38,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:38,373 INFO L225 Difference]: With dead ends: 93 [2020-10-12 15:53:38,374 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:53:38,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=167, Invalid=2485, Unknown=0, NotChecked=0, Total=2652 [2020-10-12 15:53:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:53:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2020-10-12 15:53:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:53:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2020-10-12 15:53:38,387 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 68 [2020-10-12 15:53:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:38,387 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2020-10-12 15:53:38,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 15:53:38,387 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2020-10-12 15:53:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 15:53:38,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:38,388 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-12 15:53:38,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:53:38,388 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:38,389 INFO L82 PathProgramCache]: Analyzing trace with hash -167102574, now seen corresponding path program 5 times [2020-10-12 15:53:38,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:38,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407387579] [2020-10-12 15:53:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:38,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 15:53:40,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:40,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-10-12 15:53:40,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:53:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 15:53:40,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 15:53:40,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:40,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:40,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 15:53:40,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:40,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:40,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:53:40,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:53:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:53:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:53:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:53:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:53:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:53:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:40,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:40,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:40,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:40,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:53:40,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:40,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:40,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-12 15:53:40,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407387579] [2020-10-12 15:53:40,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:53:40,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:53:40,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816521710] [2020-10-12 15:53:40,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:53:40,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:53:40,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:53:40,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:53:40,813 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand 15 states. [2020-10-12 15:53:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:53:41,396 INFO L93 Difference]: Finished difference Result 102 states and 112 transitions. [2020-10-12 15:53:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 15:53:41,401 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-12 15:53:41,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:53:41,402 INFO L225 Difference]: With dead ends: 102 [2020-10-12 15:53:41,402 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:53:41,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:53:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:53:41,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2020-10-12 15:53:41,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:53:41,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-12 15:53:41,415 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 71 [2020-10-12 15:53:41,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:53:41,416 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-12 15:53:41,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:53:41,416 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-12 15:53:41,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-12 15:53:41,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:53:41,419 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-12 15:53:41,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 15:53:41,419 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:53:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:53:41,419 INFO L82 PathProgramCache]: Analyzing trace with hash -885170758, now seen corresponding path program 8 times [2020-10-12 15:53:41,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:53:41,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751492304] [2020-10-12 15:53:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:53:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:41,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:46,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:46,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 15:53:46,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 15:53:46,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:46,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:53:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:46,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:53:46,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:46,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:53:46,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:46,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:53:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:46,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:48,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:48,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 15:53:48,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:48,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-12 15:53:48,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:53:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:48,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:53:48,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:49,114 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2020-10-12 15:53:49,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:53:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:49,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:49,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:53:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:53:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 15:53:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:53:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:50,450 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-12 15:53:50,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 15:53:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:53:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:53:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:53:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:53:50,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:53:51,489 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-12 15:53:52,061 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2020-10-12 15:53:54,727 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 179 DAG size of output: 139