/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/sll2c_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:54:09,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:54:09,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:54:09,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:54:09,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:54:09,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:54:09,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:54:09,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:54:09,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:54:09,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:54:09,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:54:09,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:54:09,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:54:09,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:54:09,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:54:09,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:54:09,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:54:09,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:54:09,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:54:09,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:54:09,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:54:09,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:54:09,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:54:09,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:54:09,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:54:09,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:54:09,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:54:09,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:54:09,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:54:09,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:54:09,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:54:09,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:54:09,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:54:09,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:54:09,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:54:09,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:54:09,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:54:09,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:54:09,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:54:09,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:54:09,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:54:09,572 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 15:54:09,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:54:09,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:54:09,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:54:09,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:54:09,618 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:54:09,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:54:09,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:54:09,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:54:09,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:54:09,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:54:09,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:54:09,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:54:09,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:54:09,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:54:09,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:54:09,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:54:09,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:54:09,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:54:09,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:54:09,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:54:09,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:54:09,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:54:09,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:54:09,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:54:09,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:54:09,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:54:09,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:54:09,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:54:09,624 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:54:09,624 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 15:54:09,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:54:09,949 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:54:09,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:54:09,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:54:09,954 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:54:09,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2020-10-12 15:54:10,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c4bdba/4385a6bce761419895d37536bc5b641e/FLAG34352a507 [2020-10-12 15:54:10,475 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:54:10,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2c_prepend_unequal.i [2020-10-12 15:54:10,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c4bdba/4385a6bce761419895d37536bc5b641e/FLAG34352a507 [2020-10-12 15:54:10,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/619c4bdba/4385a6bce761419895d37536bc5b641e [2020-10-12 15:54:10,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:54:10,799 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:54:10,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:54:10,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:54:10,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:54:10,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:54:10" (1/1) ... [2020-10-12 15:54:10,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b989355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:10, skipping insertion in model container [2020-10-12 15:54:10,808 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:54:10" (1/1) ... [2020-10-12 15:54:10,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:54:10,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:54:11,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:54:11,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:54:11,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:54:11,396 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:54:11,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11 WrapperNode [2020-10-12 15:54:11,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:54:11,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:54:11,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:54:11,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:54:11,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (1/1) ... [2020-10-12 15:54:11,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:54:11,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:54:11,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:54:11,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:54:11,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (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 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-12 15:54:11,537 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-12 15:54:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2020-10-12 15:54:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2020-10-12 15:54:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_prepend [2020-10-12 15:54:11,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:54:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:54:11,538 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:54:11,539 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:54:11,540 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:54:11,541 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:54:11,542 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:54:11,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:54:11,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:54:11,545 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:54:11,546 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:54:11,547 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:54:11,548 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:54:11,549 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:54:11,550 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:54:11,551 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:54:11,552 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:54:11,553 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:54:11,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:54:11,555 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_prepend [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:54:11,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:54:11,884 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-12 15:54:12,105 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:54:12,106 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 15:54:12,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:54:12 BoogieIcfgContainer [2020-10-12 15:54:12,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:54:12,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:54:12,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:54:12,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:54:12,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:54:10" (1/3) ... [2020-10-12 15:54:12,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b6f93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:54:12, skipping insertion in model container [2020-10-12 15:54:12,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:54:11" (2/3) ... [2020-10-12 15:54:12,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b6f93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:54:12, skipping insertion in model container [2020-10-12 15:54:12,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:54:12" (3/3) ... [2020-10-12 15:54:12,117 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_prepend_unequal.i [2020-10-12 15:54:12,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:54:12,134 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:54:12,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:54:12,166 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:54:12,166 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:54:12,166 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:54:12,166 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:54:12,167 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:54:12,167 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:54:12,167 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:54:12,167 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:54:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-10-12 15:54:12,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 15:54:12,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:12,192 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] [2020-10-12 15:54:12,192 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:12,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:12,198 INFO L82 PathProgramCache]: Analyzing trace with hash -40176771, now seen corresponding path program 1 times [2020-10-12 15:54:12,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:12,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389153471] [2020-10-12 15:54:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:12,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 15:54:16,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:54:16,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3677 [2020-10-12 15:54:16,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:54:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:16,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 15:54:16,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:54:16,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:16,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:16,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:54:16,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:16,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:16,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:16,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:54:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-12 15:54:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:54:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:16,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 15:54:16,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:16,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:54:16,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 15:54:16,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:54:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:16,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:54:16,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:16,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:16,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:16,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:54:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:17,203 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 15:54:17,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389153471] [2020-10-12 15:54:17,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:17,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:54:17,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011774415] [2020-10-12 15:54:17,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:54:17,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:17,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:54:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:54:17,243 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 18 states. [2020-10-12 15:54:18,315 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2020-10-12 15:54:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:18,688 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-10-12 15:54:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:54:18,690 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 35 [2020-10-12 15:54:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:18,700 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:54:18,700 INFO L226 Difference]: Without dead ends: 51 [2020-10-12 15:54:18,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:54:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-12 15:54:18,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-12 15:54:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 15:54:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2020-10-12 15:54:18,754 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 35 [2020-10-12 15:54:18,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:18,755 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2020-10-12 15:54:18,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:54:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2020-10-12 15:54:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-12 15:54:18,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:18,758 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] [2020-10-12 15:54:18,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:54:18,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1894946815, now seen corresponding path program 1 times [2020-10-12 15:54:18,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:18,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910128324] [2020-10-12 15:54:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:18,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:20,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:20,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 15:54:20,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:20,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-12 15:54:20,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 15:54:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:20,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 15:54:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:20,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:20,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:20,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:20,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:20,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:20,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:20,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:20,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:20,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 15:54:20,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:20,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:54:20,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:20,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:20,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:20,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:20,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:20,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:20,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:54:20,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:20,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:20,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:20,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:21,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:21,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:54:21,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:21,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-12 15:54:21,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:54:21,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:21,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:54:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:21,373 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2020-10-12 15:54:21,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:21,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:54:21,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:21,639 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 15:54:21,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910128324] [2020-10-12 15:54:21,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:21,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:54:21,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591179390] [2020-10-12 15:54:21,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:54:21,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:21,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:54:21,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:54:21,643 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand 21 states. [2020-10-12 15:54:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:22,744 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-10-12 15:54:22,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:54:22,744 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-12 15:54:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:22,746 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:54:22,747 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:54:22,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=78, Invalid=734, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:54:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:54:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-12 15:54:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 15:54:22,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-12 15:54:22,760 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 38 [2020-10-12 15:54:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:22,761 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-12 15:54:22,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:54:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-12 15:54:22,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:54:22,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:22,763 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] [2020-10-12 15:54:22,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:54:22,763 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:22,764 INFO L82 PathProgramCache]: Analyzing trace with hash 473130955, now seen corresponding path program 1 times [2020-10-12 15:54:22,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:22,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260909491] [2020-10-12 15:54:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 15:54:25,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:54:25,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2590 [2020-10-12 15:54:25,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:54:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 15:54:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:54:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:25,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:54:25,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:25,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:25,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:25,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:25,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:54:25,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:25,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:54:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:25,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:54:25,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:25,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:54:25,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 15:54:25,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:54:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:25,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:54:25,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:25,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:25,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:25,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:25,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:54:25,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:25,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:25,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:54:25,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260909491] [2020-10-12 15:54:25,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:25,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:54:25,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383052176] [2020-10-12 15:54:25,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:54:25,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:25,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:54:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:54:25,981 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 18 states. [2020-10-12 15:54:26,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:26,804 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2020-10-12 15:54:26,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 15:54:26,804 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-12 15:54:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:26,806 INFO L225 Difference]: With dead ends: 67 [2020-10-12 15:54:26,806 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:54:26,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:54:26,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:54:26,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-10-12 15:54:26,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-12 15:54:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-12 15:54:26,818 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 43 [2020-10-12 15:54:26,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:26,818 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-12 15:54:26,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:54:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-12 15:54:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:54:26,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:26,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:26,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:54:26,820 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:26,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:26,821 INFO L82 PathProgramCache]: Analyzing trace with hash -22205670, now seen corresponding path program 1 times [2020-10-12 15:54:26,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:26,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616268412] [2020-10-12 15:54:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:27,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:54:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 840 [2020-10-12 15:54:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 15:54:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:54:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:27,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:27,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:27,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:27,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:27,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:27,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:27,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:27,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-12 15:54:27,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:54:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:27,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:54:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:28,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:28,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:28,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:54:28,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:28,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:54:28,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:28,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:28,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:28,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:28,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:54:28,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:28,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 15:54:28,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:54:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:28,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:54:28,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:28,677 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-12 15:54:29,011 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-12 15:54:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:29,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:29,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:29,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:29,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 15:54:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:54:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:29,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:29,507 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2020-10-12 15:54:29,528 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 15:54:29,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616268412] [2020-10-12 15:54:29,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:29,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 15:54:29,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334188261] [2020-10-12 15:54:29,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 15:54:29,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:29,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 15:54:29,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-12 15:54:29,531 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 24 states. [2020-10-12 15:54:30,721 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-12 15:54:31,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:31,327 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-12 15:54:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:54:31,328 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 40 [2020-10-12 15:54:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:31,330 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:54:31,330 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 15:54:31,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:54:31,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 15:54:31,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-12 15:54:31,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-12 15:54:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-12 15:54:31,344 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 40 [2020-10-12 15:54:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:31,345 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-12 15:54:31,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 15:54:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-12 15:54:31,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-12 15:54:31,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:31,346 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 15:54:31,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:54:31,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:31,347 INFO L82 PathProgramCache]: Analyzing trace with hash -872112508, now seen corresponding path program 1 times [2020-10-12 15:54:31,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:31,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428970183] [2020-10-12 15:54:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:31,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:31,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:32,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:33,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:34,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:34,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 15:54:34,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:54:34,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2763 [2020-10-12 15:54:34,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:54:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:34,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 15:54:34,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:34,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:34,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:34,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:34,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:54:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:34,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:34,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:34,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:34,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-12 15:54:34,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:34,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:34,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:34,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:54:34,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:34,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:34,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:34,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:34,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:34,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:54:34,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:34,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:34,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:54:34,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 15:54:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:54:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:54:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:35,029 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-10-12 15:54:35,181 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2020-10-12 15:54:35,459 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-12 15:54:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:35,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:35,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:35,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:35,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:54:35,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:35,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:35,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:35,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:35,869 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2020-10-12 15:54:35,899 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 15:54:35,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428970183] [2020-10-12 15:54:35,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:35,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 15:54:35,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303998101] [2020-10-12 15:54:35,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 15:54:35,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:35,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 15:54:35,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:54:35,902 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 22 states. [2020-10-12 15:54:36,829 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-12 15:54:37,125 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 15:54:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:37,620 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-12 15:54:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:54:37,621 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-12 15:54:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:37,622 INFO L225 Difference]: With dead ends: 73 [2020-10-12 15:54:37,623 INFO L226 Difference]: Without dead ends: 71 [2020-10-12 15:54:37,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=84, Invalid=846, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:54:37,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-12 15:54:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2020-10-12 15:54:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 15:54:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-10-12 15:54:37,635 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 40 [2020-10-12 15:54:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:37,635 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-10-12 15:54:37,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 15:54:37,636 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-10-12 15:54:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 15:54:37,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:37,637 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 15:54:37,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:54:37,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:37,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:37,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1654476681, now seen corresponding path program 1 times [2020-10-12 15:54:37,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:37,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243588960] [2020-10-12 15:54:37,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:37,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 15:54:41,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:41,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3341 [2020-10-12 15:54:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:54:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:41,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:54:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:41,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:41,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:54:41,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:41,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:54:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 15:54:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:54:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:54:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:41,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:41,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:54:41,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:41,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:41,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:54:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:41,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:41,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:54:41,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:54:41,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:41,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:54:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:54:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:41,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:41,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:54:41,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:41,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-12 15:54:41,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:54:41,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:41,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:54:41,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:42,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:42,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:42,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:42,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:54:42,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:42,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:42,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:42,195 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 15:54:42,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243588960] [2020-10-12 15:54:42,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:42,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:54:42,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526291155] [2020-10-12 15:54:42,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:54:42,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:42,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:54:42,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:54:42,198 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 23 states. [2020-10-12 15:54:43,208 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2020-10-12 15:54:43,400 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2020-10-12 15:54:43,621 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-12 15:54:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:43,956 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-10-12 15:54:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:54:43,957 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 46 [2020-10-12 15:54:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:43,959 INFO L225 Difference]: With dead ends: 81 [2020-10-12 15:54:43,959 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 15:54:43,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 15:54:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 15:54:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 15:54:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:54:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2020-10-12 15:54:43,972 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 46 [2020-10-12 15:54:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:43,973 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2020-10-12 15:54:43,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:54:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2020-10-12 15:54:43,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:54:43,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:43,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:43,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:54:43,975 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:43,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:43,976 INFO L82 PathProgramCache]: Analyzing trace with hash -581458849, now seen corresponding path program 1 times [2020-10-12 15:54:43,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:43,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7340307] [2020-10-12 15:54:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:44,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:45,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:45,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:54:45,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:54:45,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1857 [2020-10-12 15:54:45,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:45,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:54:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:45,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:54:45,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:46,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:46,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:46,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:46,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:46,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:54:46,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:46,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:46,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:46,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:46,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 15:54:46,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 15:54:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:46,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 15:54:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:46,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:46,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:46,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:54:46,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:54:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:54:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:46,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:46,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:46,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:54:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:46,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:54:46,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:47,028 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-12 15:54:47,456 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-12 15:54:47,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:47,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:47,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:47,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:48,272 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 40 [2020-10-12 15:54:48,295 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 15:54:48,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7340307] [2020-10-12 15:54:48,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:48,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 15:54:48,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442150508] [2020-10-12 15:54:48,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 15:54:48,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:48,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 15:54:48,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-12 15:54:48,298 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand 25 states. [2020-10-12 15:54:49,747 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-10-12 15:54:50,313 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2020-10-12 15:54:51,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:51,325 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2020-10-12 15:54:51,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:54:51,326 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 42 [2020-10-12 15:54:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:51,328 INFO L225 Difference]: With dead ends: 82 [2020-10-12 15:54:51,328 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 15:54:51,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 15:54:51,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 15:54:51,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2020-10-12 15:54:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 15:54:51,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2020-10-12 15:54:51,342 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 42 [2020-10-12 15:54:51,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:51,342 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2020-10-12 15:54:51,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 15:54:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2020-10-12 15:54:51,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-12 15:54:51,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:51,344 INFO L422 BasicCegarLoop]: trace histogram [3, 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 15:54:51,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:54:51,344 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1431365687, now seen corresponding path program 2 times [2020-10-12 15:54:51,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:51,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449362525] [2020-10-12 15:54:51,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:51,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:51,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:52,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 15:54:54,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:54:54,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2687 [2020-10-12 15:54:54,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:54:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 15:54:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:54,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:54,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:54,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:54,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:54,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:54:54,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:54,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:54,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:54,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:54,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:54:54,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:54,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:54,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:54:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:54:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:54,701 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-12 15:54:54,871 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2020-10-12 15:54:55,026 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 15:54:55,205 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-12 15:54:55,434 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2020-10-12 15:54:55,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:55,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:55,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:54:55,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:54:55,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:55,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 15:54:55,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449362525] [2020-10-12 15:54:55,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:54:55,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 15:54:55,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699699560] [2020-10-12 15:54:55,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 15:54:55,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:55,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 15:54:55,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:54:55,791 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand 23 states. [2020-10-12 15:54:56,699 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2020-10-12 15:54:56,981 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-12 15:54:57,438 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-12 15:54:57,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:57,974 INFO L93 Difference]: Finished difference Result 89 states and 109 transitions. [2020-10-12 15:54:57,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 15:54:57,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2020-10-12 15:54:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:57,978 INFO L225 Difference]: With dead ends: 89 [2020-10-12 15:54:57,978 INFO L226 Difference]: Without dead ends: 87 [2020-10-12 15:54:57,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:54:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-12 15:54:57,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-12 15:54:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 15:54:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-10-12 15:54:57,997 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 42 [2020-10-12 15:54:57,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:57,997 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-10-12 15:54:57,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 15:54:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-10-12 15:54:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 15:54:57,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:58,000 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:54:58,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:54:58,000 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:58,001 INFO L82 PathProgramCache]: Analyzing trace with hash -102739033, now seen corresponding path program 1 times [2020-10-12 15:54:58,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:58,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509455037] [2020-10-12 15:54:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 15:54:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 15:54:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:58,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 15:54:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:54:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:54:58,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:54:58,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:58,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:58,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:54:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 15:54:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:54:58,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:54:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:54:58,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:54:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:58,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:54:58,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:54:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:58,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:54:58,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 15:54:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:54:58,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:54:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:58,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 15:54:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:54:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:58,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:54:58,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:54:58,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:54:58,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:54:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:54:58,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:54:58,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:54:58,241 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 15:54:58,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509455037] [2020-10-12 15:54:58,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:54:58,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:54:58,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332414839] [2020-10-12 15:54:58,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:54:58,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:54:58,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:54:58,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:54:58,244 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 7 states. [2020-10-12 15:54:58,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:54:58,398 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2020-10-12 15:54:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 15:54:58,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-10-12 15:54:58,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:54:58,400 INFO L225 Difference]: With dead ends: 114 [2020-10-12 15:54:58,400 INFO L226 Difference]: Without dead ends: 65 [2020-10-12 15:54:58,401 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 15:54:58,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-12 15:54:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2020-10-12 15:54:58,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:54:58,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-10-12 15:54:58,426 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 43 [2020-10-12 15:54:58,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:54:58,426 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-10-12 15:54:58,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:54:58,426 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-10-12 15:54:58,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-12 15:54:58,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:54:58,428 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] [2020-10-12 15:54:58,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:54:58,430 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:54:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:54:58,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1664059140, now seen corresponding path program 1 times [2020-10-12 15:54:58,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:54:58,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083824574] [2020-10-12 15:54:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:54:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:54:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:54:59,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:54:59,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 15:54:59,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1500 [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 15:54:59,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:00,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:00,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:00,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:00,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:55:00,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:00,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-12 15:55:00,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:55:00,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:00,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:55:00,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:00,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:00,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:00,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:00,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:00,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:55:00,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:55:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:00,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:55:00,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:00,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:00,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:55:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:55:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:55:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:00,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:00,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:00,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:55:00,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 15:55:00,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:55:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:55:00,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:00,929 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 15:55:01,094 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 15:55:01,356 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 62 [2020-10-12 15:55:01,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:01,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-12 15:55:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:55:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:55:01,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083824574] [2020-10-12 15:55:01,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:01,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 15:55:01,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633663760] [2020-10-12 15:55:01,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 15:55:01,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 15:55:01,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2020-10-12 15:55:01,734 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 26 states. [2020-10-12 15:55:02,595 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2020-10-12 15:55:02,846 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 15:55:03,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:03,155 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-12 15:55:03,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 15:55:03,157 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 48 [2020-10-12 15:55:03,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:03,158 INFO L225 Difference]: With dead ends: 71 [2020-10-12 15:55:03,158 INFO L226 Difference]: Without dead ends: 69 [2020-10-12 15:55:03,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 15:55:03,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-12 15:55:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-12 15:55:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-12 15:55:03,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-10-12 15:55:03,168 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 48 [2020-10-12 15:55:03,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:03,168 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-10-12 15:55:03,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 15:55:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-10-12 15:55:03,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:55:03,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:03,170 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 15:55:03,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:55:03,170 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:03,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:03,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1432960809, now seen corresponding path program 1 times [2020-10-12 15:55:03,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:03,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640238916] [2020-10-12 15:55:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:03,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3432 [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:06,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 15:55:06,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:55:06,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:55:06,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:06,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:06,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:06,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:06,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:06,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:06,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:55:06,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-12 15:55:06,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:55:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:06,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:55:06,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:07,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:55:07,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:07,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:07,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:07,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:07,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:55:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:07,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:07,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:07,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:55:07,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 15:55:07,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:55:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:07,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:55:07,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:08,271 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-12 15:55:08,600 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-12 15:55:08,885 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-12 15:55:09,424 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 103 [2020-10-12 15:55:09,897 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 90 [2020-10-12 15:55:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:10,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:10,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:10,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:10,541 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-12 15:55:10,570 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 15:55:10,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640238916] [2020-10-12 15:55:10,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:10,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 15:55:10,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112636269] [2020-10-12 15:55:10,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 15:55:10,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:10,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 15:55:10,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=751, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:55:10,573 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 29 states. [2020-10-12 15:55:11,227 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 15:55:12,496 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 83 [2020-10-12 15:55:13,076 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 112 [2020-10-12 15:55:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:14,297 INFO L93 Difference]: Finished difference Result 77 states and 91 transitions. [2020-10-12 15:55:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:55:14,298 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 50 [2020-10-12 15:55:14,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:14,299 INFO L225 Difference]: With dead ends: 77 [2020-10-12 15:55:14,299 INFO L226 Difference]: Without dead ends: 75 [2020-10-12 15:55:14,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=136, Invalid=1670, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 15:55:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-12 15:55:14,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 66. [2020-10-12 15:55:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-12 15:55:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-12 15:55:14,309 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 50 [2020-10-12 15:55:14,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:14,309 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-12 15:55:14,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 15:55:14,309 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-12 15:55:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 15:55:14,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:14,310 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:55:14,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:55:14,311 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:14,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:14,311 INFO L82 PathProgramCache]: Analyzing trace with hash 2012099649, now seen corresponding path program 2 times [2020-10-12 15:55:14,311 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:14,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24608926] [2020-10-12 15:55:14,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:14,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:18,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4256 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:55:18,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 15:55:18,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:18,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:18,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:18,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:18,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:55:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:19,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:19,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:19,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:19,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:19,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:55:19,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:55:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:19,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:55:19,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:19,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:19,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:19,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:19,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:19,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:55:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:19,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:55:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:19,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:55:19,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:19,598 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-12 15:55:19,864 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2020-10-12 15:55:20,147 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2020-10-12 15:55:20,406 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2020-10-12 15:55:20,701 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2020-10-12 15:55:20,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:20,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:20,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:20,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:20,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 15:55:20,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:20,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:55:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:20,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:20,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:21,255 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-10-12 15:55:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:55:21,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24608926] [2020-10-12 15:55:21,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:21,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 15:55:21,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506445887] [2020-10-12 15:55:21,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 15:55:21,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:21,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 15:55:21,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2020-10-12 15:55:21,284 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 27 states. [2020-10-12 15:55:22,382 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-12 15:55:22,701 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 86 [2020-10-12 15:55:23,190 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 101 [2020-10-12 15:55:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:23,649 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2020-10-12 15:55:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:55:23,650 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-10-12 15:55:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:23,651 INFO L225 Difference]: With dead ends: 83 [2020-10-12 15:55:23,652 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 15:55:23,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 15:55:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 15:55:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2020-10-12 15:55:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:55:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-10-12 15:55:23,673 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 50 [2020-10-12 15:55:23,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:23,674 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-10-12 15:55:23,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 15:55:23,674 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-10-12 15:55:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 15:55:23,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:23,675 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:55:23,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:55:23,675 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:23,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1809770506, now seen corresponding path program 1 times [2020-10-12 15:55:23,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:23,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620699161] [2020-10-12 15:55:23,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:23,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:23,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:23,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:25,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:27,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:28,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 15:55:28,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 15:55:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:28,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:28,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:28,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:28,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:28,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:28,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:28,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:28,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:28,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:28,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:28,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:29,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:30,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:30,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 15:55:30,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:30,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:30,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:30,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:55:30,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:30,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:30,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:55:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:30,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:30,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:30,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 15:55:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:55:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:31,124 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-12 15:55:31,407 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-12 15:55:31,744 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-12 15:55:32,059 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-12 15:55:32,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:32,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:32,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:32,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:32,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:32,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:32,654 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-12 15:55:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:55:32,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620699161] [2020-10-12 15:55:32,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:32,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 15:55:32,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406205784] [2020-10-12 15:55:32,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 15:55:32,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:32,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 15:55:32,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=983, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:55:32,678 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 33 states. [2020-10-12 15:55:33,193 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-12 15:55:34,354 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 90 [2020-10-12 15:55:34,761 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2020-10-12 15:55:35,181 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2020-10-12 15:55:35,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:35,795 INFO L93 Difference]: Finished difference Result 84 states and 99 transitions. [2020-10-12 15:55:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:55:35,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 56 [2020-10-12 15:55:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:35,798 INFO L225 Difference]: With dead ends: 84 [2020-10-12 15:55:35,798 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 15:55:35,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:55:35,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 15:55:35,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 71. [2020-10-12 15:55:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:55:35,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-10-12 15:55:35,809 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 56 [2020-10-12 15:55:35,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:35,809 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-10-12 15:55:35,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 15:55:35,809 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-10-12 15:55:35,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:55:35,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:35,810 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-12 15:55:35,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 15:55:35,811 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:35,811 INFO L82 PathProgramCache]: Analyzing trace with hash 892518108, now seen corresponding path program 2 times [2020-10-12 15:55:35,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:35,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158201411] [2020-10-12 15:55:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:35,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:36,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:36,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2998 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:55:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:55:38,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:39,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:39,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:39,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:39,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:39,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:39,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:55:39,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:55:39,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:39,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:55:39,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:55:39,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:39,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:39,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:39,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:39,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:39,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:39,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 15:55:39,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:55:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:39,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:55:39,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:39,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:55:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:39,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:40,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:55:40,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:40,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 15:55:40,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:55:40,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:40,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:55:40,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:41,875 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-12 15:55:42,436 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2020-10-12 15:55:43,049 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 106 [2020-10-12 15:55:43,872 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 105 [2020-10-12 15:55:44,943 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 132 [2020-10-12 15:55:46,108 WARN L193 SmtUtils]: Spent 932.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 130 [2020-10-12 15:55:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:46,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:46,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:46,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:46,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:47,057 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-10-12 15:55:47,100 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:55:47,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158201411] [2020-10-12 15:55:47,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:47,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 15:55:47,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634958815] [2020-10-12 15:55:47,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 15:55:47,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:47,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 15:55:47,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=806, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:55:47,101 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 30 states. [2020-10-12 15:55:50,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:50,820 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2020-10-12 15:55:50,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 15:55:50,821 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 52 [2020-10-12 15:55:50,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:50,822 INFO L225 Difference]: With dead ends: 85 [2020-10-12 15:55:50,822 INFO L226 Difference]: Without dead ends: 83 [2020-10-12 15:55:50,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=131, Invalid=1591, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 15:55:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-12 15:55:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 71. [2020-10-12 15:55:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:55:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-10-12 15:55:50,831 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 52 [2020-10-12 15:55:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:50,832 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-10-12 15:55:50,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 15:55:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-10-12 15:55:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 15:55:50,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:50,833 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:55:50,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 15:55:50,833 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:50,834 INFO L82 PathProgramCache]: Analyzing trace with hash 42611270, now seen corresponding path program 3 times [2020-10-12 15:55:50,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:50,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008042446] [2020-10-12 15:55:50,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:50,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 15:55:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:55:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 987 [2020-10-12 15:55:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 15:55:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:55:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:55:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:51,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:55:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:51,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:51,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:55:51,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:55:51,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:55:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:55:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:55:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:51,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:55:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:52,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-12 15:55:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:55:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:55:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:52,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:55:52,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:55:52,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:55:52,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:52,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:55:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:52,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:52,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:55:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:55:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:52,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:55:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:52,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:52,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:52,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:55:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:52,937 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 15:55:53,116 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-12 15:55:53,342 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-12 15:55:53,561 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-12 15:55:53,831 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 15:55:54,146 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2020-10-12 15:55:54,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:55:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:54,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:55:54,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:55:54,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:55:54,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:55:54,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:55:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:55:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:55:54,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:55:54,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:55:54,586 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2020-10-12 15:55:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:55:54,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008042446] [2020-10-12 15:55:54,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:55:54,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 15:55:54,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324224952] [2020-10-12 15:55:54,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 15:55:54,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:55:54,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 15:55:54,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-12 15:55:54,618 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 28 states. [2020-10-12 15:55:56,127 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2020-10-12 15:55:56,679 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-10-12 15:55:57,124 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-10-12 15:55:57,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:55:57,804 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2020-10-12 15:55:57,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 15:55:57,805 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 52 [2020-10-12 15:55:57,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:55:57,806 INFO L225 Difference]: With dead ends: 93 [2020-10-12 15:55:57,806 INFO L226 Difference]: Without dead ends: 91 [2020-10-12 15:55:57,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=113, Invalid=1447, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 15:55:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-12 15:55:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2020-10-12 15:55:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-12 15:55:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2020-10-12 15:55:57,819 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 52 [2020-10-12 15:55:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:55:57,819 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2020-10-12 15:55:57,819 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 15:55:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2020-10-12 15:55:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 15:55:57,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:55:57,823 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, 1, 1, 1] [2020-10-12 15:55:57,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 15:55:57,823 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:55:57,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:55:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1654093622, now seen corresponding path program 1 times [2020-10-12 15:55:57,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:55:57,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079010112] [2020-10-12 15:55:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:55:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:55:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:55:59,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:01,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:02,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 15:56:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:03,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:03,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:56:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:03,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:03,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:03,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:56:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:03,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:03,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:03,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:56:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:03,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:04,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:04,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:56:04,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:04,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 411 [2020-10-12 15:56:04,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:56:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:04,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:56:04,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:04,671 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2020-10-12 15:56:05,296 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 66 [2020-10-12 15:56:05,938 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2020-10-12 15:56:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:06,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:06,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:06,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:06,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:06,359 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 15:56:06,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079010112] [2020-10-12 15:56:06,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:06,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 15:56:06,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299678652] [2020-10-12 15:56:06,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 15:56:06,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:06,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 15:56:06,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=752, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:56:06,361 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand 29 states. [2020-10-12 15:56:06,864 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-12 15:56:07,695 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-12 15:56:08,089 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-12 15:56:08,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:08,812 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2020-10-12 15:56:08,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:56:08,813 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 53 [2020-10-12 15:56:08,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:08,815 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:56:08,815 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 15:56:08,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:56:08,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 15:56:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-12 15:56:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:56:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-12 15:56:08,828 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 53 [2020-10-12 15:56:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:08,828 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-12 15:56:08,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 15:56:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-12 15:56:08,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 15:56:08,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:08,829 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:08,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 15:56:08,830 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:08,830 INFO L82 PathProgramCache]: Analyzing trace with hash -988945073, now seen corresponding path program 3 times [2020-10-12 15:56:08,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:08,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076165108] [2020-10-12 15:56:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:11,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:13,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:56:13,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:14,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:14,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:14,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:14,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:14,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:56:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-12 15:56:14,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:56:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:14,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 15:56:14,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:56:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:14,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:14,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:14,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:14,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:14,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:56:14,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:14,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:14,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:15,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:15,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:15,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:15,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:15,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:56:15,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:15,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:15,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:15,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:56:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:15,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:15,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 15:56:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:15,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:15,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:15,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:56:15,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:15,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-12 15:56:15,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:15,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:56:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:15,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:56:15,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:16,646 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-12 15:56:17,005 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-12 15:56:17,639 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 90 [2020-10-12 15:56:18,228 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-12 15:56:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:18,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:18,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:18,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:18,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:18,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-12 15:56:18,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:19,354 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2020-10-12 15:56:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-12 15:56:19,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076165108] [2020-10-12 15:56:19,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:19,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 15:56:19,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525549883] [2020-10-12 15:56:19,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 15:56:19,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 15:56:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=981, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 15:56:19,433 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 33 states. [2020-10-12 15:56:20,505 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-12 15:56:21,700 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2020-10-12 15:56:22,449 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-12 15:56:24,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:24,353 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-12 15:56:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:56:24,354 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 58 [2020-10-12 15:56:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:24,356 INFO L225 Difference]: With dead ends: 97 [2020-10-12 15:56:24,356 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 15:56:24,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=167, Invalid=2089, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:56:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 15:56:24,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-12 15:56:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:56:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-12 15:56:24,369 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 58 [2020-10-12 15:56:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:24,369 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-12 15:56:24,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 15:56:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-12 15:56:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 15:56:24,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:24,370 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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 15:56:24,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 15:56:24,371 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:24,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1838851911, now seen corresponding path program 4 times [2020-10-12 15:56:24,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:24,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958524272] [2020-10-12 15:56:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:24,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:26,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:26,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:56:26,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:26,797 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-12 15:56:26,911 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-12 15:56:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:26,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:26,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:26,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:26,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:26,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:26,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:27,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:27,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 15:56:27,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:27,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:27,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:27,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 15:56:27,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:27,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:56:27,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:27,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:27,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:27,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:56:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:27,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 15:56:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:27,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:27,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:27,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 15:56:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:28,167 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 15:56:28,580 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2020-10-12 15:56:28,988 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 84 [2020-10-12 15:56:29,407 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 87 [2020-10-12 15:56:29,900 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 77 [2020-10-12 15:56:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:30,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:30,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:30,371 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 15:56:30,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958524272] [2020-10-12 15:56:30,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:30,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 15:56:30,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304772508] [2020-10-12 15:56:30,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 15:56:30,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:30,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 15:56:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=742, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:56:30,374 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 29 states. [2020-10-12 15:56:31,643 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 92 [2020-10-12 15:56:32,186 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-12 15:56:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:32,708 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2020-10-12 15:56:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:56:32,709 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 58 [2020-10-12 15:56:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:32,711 INFO L225 Difference]: With dead ends: 98 [2020-10-12 15:56:32,711 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 15:56:32,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=124, Invalid=1358, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 15:56:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 15:56:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 82. [2020-10-12 15:56:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:56:32,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-12 15:56:32,724 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 58 [2020-10-12 15:56:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:32,724 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-12 15:56:32,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 15:56:32,724 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-12 15:56:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:56:32,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:32,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:56:32,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 15:56:32,726 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:32,726 INFO L82 PathProgramCache]: Analyzing trace with hash 262746989, now seen corresponding path program 1 times [2020-10-12 15:56:32,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:32,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392882077] [2020-10-12 15:56:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:32,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:56:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:34,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:34,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:34,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:34,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:34,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:34,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:34,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:34,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:34,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:56:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:56:35,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:35,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:56:35,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:35,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:56:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:35,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:56:35,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:36,372 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-12 15:56:36,692 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-12 15:56:37,037 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-12 15:56:37,867 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 116 [2020-10-12 15:56:38,476 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-12 15:56:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:38,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:38,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:38,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 15:56:38,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:38,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:38,982 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-10-12 15:56:39,017 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 15:56:39,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392882077] [2020-10-12 15:56:39,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:39,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 15:56:39,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310263801] [2020-10-12 15:56:39,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 15:56:39,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:39,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 15:56:39,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:56:39,019 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 30 states. [2020-10-12 15:56:39,842 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-12 15:56:41,383 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2020-10-12 15:56:42,130 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 96 [2020-10-12 15:56:43,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:43,685 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-12 15:56:43,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 15:56:43,686 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 54 [2020-10-12 15:56:43,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:43,687 INFO L225 Difference]: With dead ends: 95 [2020-10-12 15:56:43,688 INFO L226 Difference]: Without dead ends: 93 [2020-10-12 15:56:43,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=142, Invalid=1928, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 15:56:43,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-12 15:56:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2020-10-12 15:56:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:56:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-12 15:56:43,701 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 54 [2020-10-12 15:56:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:43,701 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-12 15:56:43,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 15:56:43,701 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-12 15:56:43,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:56:43,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:43,702 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-12 15:56:43,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 15:56:43,703 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:43,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:43,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2000203871, now seen corresponding path program 4 times [2020-10-12 15:56:43,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:43,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839495868] [2020-10-12 15:56:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:43,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:44,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:56:44,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 859 [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:56:44,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:44,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:44,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:44,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:56:44,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:45,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:45,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:45,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:45,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:45,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:56:45,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:56:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:45,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 15:56:45,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:45,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:45,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:45,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:56:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:45,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:45,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:45,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 15:56:45,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:56:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:46,600 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-12 15:56:47,023 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2020-10-12 15:56:47,376 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-12 15:56:47,786 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-10-12 15:56:48,315 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 95 [2020-10-12 15:56:48,977 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2020-10-12 15:56:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:49,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:49,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:49,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:49,570 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2020-10-12 15:56:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:56:49,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839495868] [2020-10-12 15:56:49,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:56:49,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 15:56:49,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917126325] [2020-10-12 15:56:49,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 15:56:49,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:56:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 15:56:49,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-12 15:56:49,616 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 31 states. [2020-10-12 15:56:50,466 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-10-12 15:56:52,401 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2020-10-12 15:56:53,397 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-10-12 15:56:54,464 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 105 [2020-10-12 15:56:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:56:56,359 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2020-10-12 15:56:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 15:56:56,361 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 54 [2020-10-12 15:56:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:56:56,362 INFO L225 Difference]: With dead ends: 97 [2020-10-12 15:56:56,362 INFO L226 Difference]: Without dead ends: 95 [2020-10-12 15:56:56,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=149, Invalid=2107, Unknown=0, NotChecked=0, Total=2256 [2020-10-12 15:56:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-12 15:56:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 82. [2020-10-12 15:56:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-12 15:56:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 98 transitions. [2020-10-12 15:56:56,375 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 98 transitions. Word has length 54 [2020-10-12 15:56:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:56:56,375 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 98 transitions. [2020-10-12 15:56:56,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 15:56:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 98 transitions. [2020-10-12 15:56:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 15:56:56,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:56:56,376 INFO L422 BasicCegarLoop]: trace histogram [5, 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 15:56:56,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 15:56:56,377 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:56:56,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:56:56,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1444856587, now seen corresponding path program 5 times [2020-10-12 15:56:56,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:56:56,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [30650481] [2020-10-12 15:56:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:56:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:56,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:56,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:57,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:58,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:58,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1863 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 15:56:58,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:58,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:56:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:56:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:56:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:58,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:56:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:58,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:58,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:58,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:56:58,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 15:56:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 15:56:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 15:56:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:56:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:58,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:56:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:56:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:56:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:56:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:58,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:58,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:56:58,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:56:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:58,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:56:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:56:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 15:56:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:56:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 15:56:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:56:59,301 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 15:56:59,534 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2020-10-12 15:56:59,824 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-12 15:57:00,100 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-12 15:57:00,382 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-12 15:57:00,663 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-10-12 15:57:01,075 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 75 [2020-10-12 15:57:01,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:01,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:01,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:01,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:01,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 15:57:01,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 15:57:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:01,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:57:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 15:57:01,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [30650481] [2020-10-12 15:57:01,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:57:01,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 15:57:01,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830312325] [2020-10-12 15:57:01,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 15:57:01,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:57:01,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 15:57:01,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2020-10-12 15:57:01,530 INFO L87 Difference]: Start difference. First operand 82 states and 98 transitions. Second operand 29 states. [2020-10-12 15:57:02,886 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-12 15:57:03,540 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-10-12 15:57:04,207 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2020-10-12 15:57:04,879 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 90 [2020-10-12 15:57:05,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:57:05,228 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-10-12 15:57:05,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 15:57:05,229 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-10-12 15:57:05,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:57:05,231 INFO L225 Difference]: With dead ends: 104 [2020-10-12 15:57:05,231 INFO L226 Difference]: Without dead ends: 102 [2020-10-12 15:57:05,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:57:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-12 15:57:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2020-10-12 15:57:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 15:57:05,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2020-10-12 15:57:05,245 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 54 [2020-10-12 15:57:05,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:57:05,246 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2020-10-12 15:57:05,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 15:57:05,246 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2020-10-12 15:57:05,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 15:57:05,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:57:05,247 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:57:05,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 15:57:05,247 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:57:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:57:05,247 INFO L82 PathProgramCache]: Analyzing trace with hash 150089911, now seen corresponding path program 1 times [2020-10-12 15:57:05,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:57:05,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863359692] [2020-10-12 15:57:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:57:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:10,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 15:57:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:57:10,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 15:57:10,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:57:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:10,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:57:10,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:57:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:10,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:10,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 15:57:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-12 15:57:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:11,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 15:57:11,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:57:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:57:11,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:57:11,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:57:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:11,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:11,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-12 15:57:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 15:57:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:57:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 15:57:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:57:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:57:12,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 15:57:12,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0