/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=NARROWEST --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/heap-data/process_queue.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:25:13,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:25:13,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:25:13,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:25:13,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:25:13,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:25:13,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:25:13,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:25:13,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:25:13,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:25:13,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:25:13,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:25:13,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:25:13,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:25:13,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:25:13,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:25:13,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:25:13,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:25:13,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:25:13,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:25:13,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:25:13,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:25:13,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:25:13,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:25:13,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:25:13,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:25:13,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:25:13,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:25:13,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:25:13,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:25:13,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:25:13,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:25:13,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:25:13,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:25:13,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:25:13,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:25:13,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:25:13,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:25:13,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:25:13,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:25:13,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:25:13,671 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 [2020-10-13 10:25:13,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:25:13,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:25:13,695 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:25:13,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:25:13,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:25:13,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:25:13,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:25:13,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:25:13,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:25:13,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:25:13,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:25:13,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:25:13,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:25:13,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:25:13,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:25:13,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:25:13,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:25:13,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:25:13,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:25:13,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:25:13,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:25:13,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:25:13,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:25:13,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:25:13,700 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:25:13,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:25:14,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:25:14,012 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:25:14,014 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:25:14,015 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:25:14,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/process_queue.i [2020-10-13 10:25:14,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ea182fd5/50f25e5a10cb487080352777bde83786/FLAG2afe1c01a [2020-10-13 10:25:14,514 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:25:14,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/process_queue.i [2020-10-13 10:25:14,527 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ea182fd5/50f25e5a10cb487080352777bde83786/FLAG2afe1c01a [2020-10-13 10:25:14,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ea182fd5/50f25e5a10cb487080352777bde83786 [2020-10-13 10:25:14,863 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:25:14,865 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:25:14,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:25:14,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:25:14,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:25:14,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:25:14" (1/1) ... [2020-10-13 10:25:14,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7abdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:14, skipping insertion in model container [2020-10-13 10:25:14,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:25:14" (1/1) ... [2020-10-13 10:25:14,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:25:14,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:25:15,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:25:15,442 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:25:15,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:25:15,601 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:25:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15 WrapperNode [2020-10-13 10:25:15,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:25:15,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:25:15,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:25:15,603 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:25:15,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:25:15,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:25:15,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:25:15,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:25:15,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (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 [2020-10-13 10:25:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:25:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:25:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:25:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:25:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure run_process [2020-10-13 10:25:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-13 10:25:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure choose_next [2020-10-13 10:25:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure check_queue [2020-10-13 10:25:15,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:25:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:25:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:25:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:25:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:25:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:25:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:25:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:25:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:25:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:25:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:25:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:25:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:25:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:25:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:25:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:25:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:25:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:25:15,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:25:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:25:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:25:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:25:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:25:15,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:25:15,793 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:25:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:25:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:25:15,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:25:15,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:25:15,798 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:25:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:25:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:25:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:25:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:25:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:25:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:25:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:25:15,802 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:25:15,803 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:25:15,804 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure run_process [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:25:15,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure choose_next [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure check_queue [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:25:15,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:25:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:25:15,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:25:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:25:15,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:25:16,380 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:25:16,380 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 10:25:16,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:25:16 BoogieIcfgContainer [2020-10-13 10:25:16,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:25:16,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:25:16,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:25:16,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:25:16,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:25:14" (1/3) ... [2020-10-13 10:25:16,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f36a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:25:16, skipping insertion in model container [2020-10-13 10:25:16,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (2/3) ... [2020-10-13 10:25:16,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f36a68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:25:16, skipping insertion in model container [2020-10-13 10:25:16,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:25:16" (3/3) ... [2020-10-13 10:25:16,396 INFO L109 eAbstractionObserver]: Analyzing ICFG process_queue.i [2020-10-13 10:25:16,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:25:16,416 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:25:16,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:25:16,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:25:16,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:25:16,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:25:16,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:25:16,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:25:16,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:25:16,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:25:16,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:25:16,481 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-13 10:25:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 10:25:16,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:16,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:16,491 INFO L427 AbstractCegarLoop]: === Iteration 1 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:16,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash -699499398, now seen corresponding path program 1 times [2020-10-13 10:25:16,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:16,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847673423] [2020-10-13 10:25:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:25:17,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-13 10:25:17,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:25:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:17,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:25:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:25:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:17,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:17,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:25:17,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:17,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:17,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:17,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847673423] [2020-10-13 10:25:17,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:17,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:25:17,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676989774] [2020-10-13 10:25:17,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:25:17,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:17,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:25:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:25:17,240 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 7 states. [2020-10-13 10:25:17,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:17,563 INFO L93 Difference]: Finished difference Result 100 states and 134 transitions. [2020-10-13 10:25:17,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:25:17,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-13 10:25:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:17,577 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:25:17,577 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 10:25:17,581 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:17,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 10:25:17,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 10:25:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:25:17,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-10-13 10:25:17,639 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 17 [2020-10-13 10:25:17,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:17,640 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-10-13 10:25:17,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:25:17,640 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-10-13 10:25:17,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:25:17,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:17,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:17,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:25:17,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:17,643 INFO L82 PathProgramCache]: Analyzing trace with hash -436646864, now seen corresponding path program 1 times [2020-10-13 10:25:17,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:17,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019028284] [2020-10-13 10:25:17,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:18,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:18,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:25:18,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:18,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-13 10:25:18,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:25:18,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:18,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:25:18,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:18,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:18,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:18,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:18,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:18,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:18,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:25:18,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:18,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:18,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:18,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:18,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:18,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 10:25:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:18,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019028284] [2020-10-13 10:25:18,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:18,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 10:25:18,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256086088] [2020-10-13 10:25:18,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:18,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:18,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:18,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:18,467 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 12 states. [2020-10-13 10:25:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:19,284 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2020-10-13 10:25:19,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:25:19,289 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 20 [2020-10-13 10:25:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:19,292 INFO L225 Difference]: With dead ends: 120 [2020-10-13 10:25:19,293 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 10:25:19,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:25:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 10:25:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 78. [2020-10-13 10:25:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-13 10:25:19,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 98 transitions. [2020-10-13 10:25:19,335 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 98 transitions. Word has length 20 [2020-10-13 10:25:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:19,336 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 98 transitions. [2020-10-13 10:25:19,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 98 transitions. [2020-10-13 10:25:19,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:25:19,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:19,339 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:19,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:25:19,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:19,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1313067226, now seen corresponding path program 1 times [2020-10-13 10:25:19,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:19,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189070636] [2020-10-13 10:25:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:25:19,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-13 10:25:19,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:25:19,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:19,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:25:19,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:25:19,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:19,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:19,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:25:19,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:19,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:19,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:19,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189070636] [2020-10-13 10:25:19,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:19,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:19,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15449575] [2020-10-13 10:25:19,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:19,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:19,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:19,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:19,942 INFO L87 Difference]: Start difference. First operand 78 states and 98 transitions. Second operand 12 states. [2020-10-13 10:25:21,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:21,046 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2020-10-13 10:25:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:25:21,047 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-13 10:25:21,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:21,049 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:25:21,049 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 10:25:21,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 10:25:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2020-10-13 10:25:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:25:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2020-10-13 10:25:21,087 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 23 [2020-10-13 10:25:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:21,087 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2020-10-13 10:25:21,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2020-10-13 10:25:21,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:25:21,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:21,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:21,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:25:21,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:21,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:21,092 INFO L82 PathProgramCache]: Analyzing trace with hash 383010943, now seen corresponding path program 1 times [2020-10-13 10:25:21,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:21,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873227395] [2020-10-13 10:25:21,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:21,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:22,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:22,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:25:22,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:22,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1728 [2020-10-13 10:25:22,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:25:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:25:22,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:25:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:22,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:22,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:22,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:22,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:22,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:22,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:22,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:22,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:22,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:22,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:22,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:25:22,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:22,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:22,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:22,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:22,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:25:22,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:22,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:25:22,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:22,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:25:22,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:22,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:22,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:25:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:22,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:23,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:25:23,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:25:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:25:23,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873227395] [2020-10-13 10:25:23,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:23,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:25:23,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294628985] [2020-10-13 10:25:23,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:25:23,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:23,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:25:23,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:25:23,011 INFO L87 Difference]: Start difference. First operand 77 states and 95 transitions. Second operand 10 states. [2020-10-13 10:25:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:23,444 INFO L93 Difference]: Finished difference Result 158 states and 202 transitions. [2020-10-13 10:25:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:25:23,444 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 10:25:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:23,446 INFO L225 Difference]: With dead ends: 158 [2020-10-13 10:25:23,446 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 10:25:23,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:25:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 10:25:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2020-10-13 10:25:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:25:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2020-10-13 10:25:23,463 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 35 [2020-10-13 10:25:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:23,463 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2020-10-13 10:25:23,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:25:23,464 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2020-10-13 10:25:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:25:23,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:23,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:23,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:25:23,466 INFO L427 AbstractCegarLoop]: === Iteration 5 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:23,466 INFO L82 PathProgramCache]: Analyzing trace with hash -762406251, now seen corresponding path program 1 times [2020-10-13 10:25:23,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:23,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480957816] [2020-10-13 10:25:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:23,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:25:24,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-13 10:25:24,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:24,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:25:24,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:24,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:24,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:24,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:24,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:24,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:24,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:24,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:25:24,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:24,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:24,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:25:24,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:24,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:25:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:25:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:24,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:25:24,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:24,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:24,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:25:24,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480957816] [2020-10-13 10:25:24,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:24,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:24,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066144445] [2020-10-13 10:25:24,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:24,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:24,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:24,498 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand 13 states. [2020-10-13 10:25:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:25,450 INFO L93 Difference]: Finished difference Result 217 states and 287 transitions. [2020-10-13 10:25:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:25:25,451 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-13 10:25:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:25,453 INFO L225 Difference]: With dead ends: 217 [2020-10-13 10:25:25,454 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 10:25:25,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:25:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 10:25:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-13 10:25:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-13 10:25:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 180 transitions. [2020-10-13 10:25:25,475 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 180 transitions. Word has length 38 [2020-10-13 10:25:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:25,475 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 180 transitions. [2020-10-13 10:25:25,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 180 transitions. [2020-10-13 10:25:25,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:25:25,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:25,478 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:25,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:25:25,478 INFO L427 AbstractCegarLoop]: === Iteration 6 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:25,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:25,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1053709227, now seen corresponding path program 2 times [2020-10-13 10:25:25,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:25,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128944550] [2020-10-13 10:25:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-13 10:25:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2458 [2020-10-13 10:25:28,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:28,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:25:28,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:28,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:28,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:28,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:25:28,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:28,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:25:28,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:25:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:25:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:28,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:25:28,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128944550] [2020-10-13 10:25:28,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:28,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:28,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542480914] [2020-10-13 10:25:28,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:28,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:28,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:28,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:28,740 INFO L87 Difference]: Start difference. First operand 137 states and 180 transitions. Second operand 21 states. [2020-10-13 10:25:31,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:31,503 INFO L93 Difference]: Finished difference Result 212 states and 273 transitions. [2020-10-13 10:25:31,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:25:31,504 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-10-13 10:25:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:31,507 INFO L225 Difference]: With dead ends: 212 [2020-10-13 10:25:31,507 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:25:31,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=278, Invalid=1792, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:25:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:25:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 174. [2020-10-13 10:25:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 10:25:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 232 transitions. [2020-10-13 10:25:31,531 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 232 transitions. Word has length 41 [2020-10-13 10:25:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:31,532 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 232 transitions. [2020-10-13 10:25:31,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 232 transitions. [2020-10-13 10:25:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:25:31,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:31,534 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:31,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:25:31,535 INFO L427 AbstractCegarLoop]: === Iteration 7 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:31,535 INFO L82 PathProgramCache]: Analyzing trace with hash 868237973, now seen corresponding path program 3 times [2020-10-13 10:25:31,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:31,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102745068] [2020-10-13 10:25:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:25:33,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:33,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1701 [2020-10-13 10:25:33,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:25:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:33,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:25:33,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:33,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:33,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:25:33,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:33,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:33,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:25:33,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:33,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:25:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:33,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:25:33,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:33,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:33,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:34,249 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-13 10:25:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:25:34,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102745068] [2020-10-13 10:25:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:34,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:25:34,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049657924] [2020-10-13 10:25:34,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:25:34,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:25:34,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:25:34,269 INFO L87 Difference]: Start difference. First operand 174 states and 232 transitions. Second operand 21 states. [2020-10-13 10:25:34,761 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-13 10:25:37,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:37,846 INFO L93 Difference]: Finished difference Result 495 states and 692 transitions. [2020-10-13 10:25:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:25:37,852 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 44 [2020-10-13 10:25:37,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:37,857 INFO L225 Difference]: With dead ends: 495 [2020-10-13 10:25:37,857 INFO L226 Difference]: Without dead ends: 367 [2020-10-13 10:25:37,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=264, Invalid=1806, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:25:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-13 10:25:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 349. [2020-10-13 10:25:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-10-13 10:25:37,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2020-10-13 10:25:37,903 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 44 [2020-10-13 10:25:37,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:37,904 INFO L479 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2020-10-13 10:25:37,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:25:37,904 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2020-10-13 10:25:37,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:25:37,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:37,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:37,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:25:37,906 INFO L427 AbstractCegarLoop]: === Iteration 8 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:37,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:37,907 INFO L82 PathProgramCache]: Analyzing trace with hash -775608654, now seen corresponding path program 1 times [2020-10-13 10:25:37,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:37,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222060024] [2020-10-13 10:25:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:38,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:25:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-13 10:25:38,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:25:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:38,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:38,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:38,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:38,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:38,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:39,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:39,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:39,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:25:39,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:39,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:39,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:39,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:39,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:39,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:39,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:39,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:25:39,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:39,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:39,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:39,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:39,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:25:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:39,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:25:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:25:39,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:39,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:25:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:25:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 10:25:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:39,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:39,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:39,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:39,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:39,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:39,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:25:39,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:39,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:25:39,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222060024] [2020-10-13 10:25:39,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:39,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:25:39,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428699831] [2020-10-13 10:25:39,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:25:39,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:39,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:25:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:39,196 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand 11 states. [2020-10-13 10:25:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:39,930 INFO L93 Difference]: Finished difference Result 661 states and 941 transitions. [2020-10-13 10:25:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:25:39,931 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2020-10-13 10:25:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:39,934 INFO L225 Difference]: With dead ends: 661 [2020-10-13 10:25:39,934 INFO L226 Difference]: Without dead ends: 358 [2020-10-13 10:25:39,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:25:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-13 10:25:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2020-10-13 10:25:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-13 10:25:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 509 transitions. [2020-10-13 10:25:39,973 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 509 transitions. Word has length 50 [2020-10-13 10:25:39,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:39,973 INFO L479 AbstractCegarLoop]: Abstraction has 357 states and 509 transitions. [2020-10-13 10:25:39,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:25:39,974 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 509 transitions. [2020-10-13 10:25:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:25:39,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:39,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:39,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:25:39,976 INFO L427 AbstractCegarLoop]: === Iteration 9 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:39,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:39,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2006943180, now seen corresponding path program 1 times [2020-10-13 10:25:39,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:39,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358949223] [2020-10-13 10:25:39,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:40,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:40,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:40,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 10:25:44,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4375 [2020-10-13 10:25:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:25:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-13 10:25:44,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:25:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:44,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:44,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:44,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:44,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:44,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:44,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:44,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:44,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:44,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:25:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:25:44,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:44,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 10:25:44,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:44,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:44,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:25:44,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:25:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:44,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:44,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:44,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:44,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:44,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:44,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:44,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:44,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:25:44,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:25:44,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358949223] [2020-10-13 10:25:44,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:44,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:44,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836013865] [2020-10-13 10:25:44,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:44,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:44,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:44,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:44,613 INFO L87 Difference]: Start difference. First operand 357 states and 509 transitions. Second operand 12 states. [2020-10-13 10:25:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:45,382 INFO L93 Difference]: Finished difference Result 571 states and 827 transitions. [2020-10-13 10:25:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:25:45,383 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-13 10:25:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:45,386 INFO L225 Difference]: With dead ends: 571 [2020-10-13 10:25:45,386 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 10:25:45,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:25:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 10:25:45,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-10-13 10:25:45,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 10:25:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 204 transitions. [2020-10-13 10:25:45,424 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 204 transitions. Word has length 51 [2020-10-13 10:25:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:45,425 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 204 transitions. [2020-10-13 10:25:45,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 204 transitions. [2020-10-13 10:25:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:25:45,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:45,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:45,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:25:45,427 INFO L427 AbstractCegarLoop]: === Iteration 10 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:45,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:45,427 INFO L82 PathProgramCache]: Analyzing trace with hash 293879410, now seen corresponding path program 1 times [2020-10-13 10:25:45,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:45,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [97356047] [2020-10-13 10:25:45,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 10:25:45,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 10:25:45,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 10:25:45,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:25:45,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:45,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:45,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:45,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:45,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:45,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:45,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:45,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:45,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:45,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:45,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:45,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:45,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:45,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:45,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:45,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:45,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:45,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:25:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:25:45,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:25:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:45,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:25:45,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:45,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:45,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:25:45,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:25:45,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [97356047] [2020-10-13 10:25:45,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:45,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:25:45,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077098481] [2020-10-13 10:25:45,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:25:45,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:45,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:25:45,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:25:45,586 INFO L87 Difference]: Start difference. First operand 160 states and 204 transitions. Second operand 5 states. [2020-10-13 10:25:45,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:45,755 INFO L93 Difference]: Finished difference Result 287 states and 375 transitions. [2020-10-13 10:25:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:25:45,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2020-10-13 10:25:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:45,757 INFO L225 Difference]: With dead ends: 287 [2020-10-13 10:25:45,757 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 10:25:45,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:25:45,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 10:25:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 161. [2020-10-13 10:25:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-13 10:25:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 205 transitions. [2020-10-13 10:25:45,775 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 205 transitions. Word has length 51 [2020-10-13 10:25:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:45,775 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 205 transitions. [2020-10-13 10:25:45,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:25:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 205 transitions. [2020-10-13 10:25:45,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:25:45,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:45,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:45,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:25:45,777 INFO L427 AbstractCegarLoop]: === Iteration 11 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:45,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1322229528, now seen corresponding path program 1 times [2020-10-13 10:25:45,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:45,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386574942] [2020-10-13 10:25:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:45,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3479 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:25:49,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:25:49,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:49,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:49,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:49,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:49,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:49,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:49,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:49,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:25:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:25:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:49,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:25:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 10:25:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:25:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:49,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:25:49,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 10:25:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:49,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:25:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:49,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386574942] [2020-10-13 10:25:49,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:49,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:49,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805364332] [2020-10-13 10:25:49,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:49,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:49,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:49,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:49,695 INFO L87 Difference]: Start difference. First operand 161 states and 205 transitions. Second operand 13 states. [2020-10-13 10:25:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:50,998 INFO L93 Difference]: Finished difference Result 358 states and 471 transitions. [2020-10-13 10:25:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:25:51,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-13 10:25:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:51,002 INFO L225 Difference]: With dead ends: 358 [2020-10-13 10:25:51,003 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 10:25:51,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:25:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 10:25:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 195. [2020-10-13 10:25:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-10-13 10:25:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 254 transitions. [2020-10-13 10:25:51,023 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 254 transitions. Word has length 54 [2020-10-13 10:25:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:51,023 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 254 transitions. [2020-10-13 10:25:51,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 254 transitions. [2020-10-13 10:25:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:25:51,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:51,025 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:51,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:25:51,025 INFO L427 AbstractCegarLoop]: === Iteration 12 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash 517194682, now seen corresponding path program 4 times [2020-10-13 10:25:51,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:51,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440771240] [2020-10-13 10:25:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:51,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 10:25:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:25:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 10:25:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 10:25:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:56,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:56,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:56,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:56,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:56,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:56,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:25:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:56,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:56,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:25:56,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:56,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:56,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:56,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:25:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:56,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:25:56,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:56,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:56,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:25:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:56,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:56,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:25:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:56,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:56,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:56,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:25:56,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:25:56,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:25:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:57,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:25:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:57,379 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-13 10:25:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 41 proven. 43 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-13 10:25:57,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440771240] [2020-10-13 10:25:57,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:57,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:25:57,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982871004] [2020-10-13 10:25:57,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:25:57,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:57,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:25:57,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:25:57,416 INFO L87 Difference]: Start difference. First operand 195 states and 254 transitions. Second operand 26 states. [2020-10-13 10:25:58,081 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2020-10-13 10:26:02,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:02,180 INFO L93 Difference]: Finished difference Result 261 states and 345 transitions. [2020-10-13 10:26:02,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 10:26:02,181 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 65 [2020-10-13 10:26:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:02,183 INFO L225 Difference]: With dead ends: 261 [2020-10-13 10:26:02,183 INFO L226 Difference]: Without dead ends: 259 [2020-10-13 10:26:02,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=298, Invalid=2252, Unknown=0, NotChecked=0, Total=2550 [2020-10-13 10:26:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-13 10:26:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 219. [2020-10-13 10:26:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-13 10:26:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 285 transitions. [2020-10-13 10:26:02,205 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 285 transitions. Word has length 65 [2020-10-13 10:26:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:02,206 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 285 transitions. [2020-10-13 10:26:02,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:26:02,206 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 285 transitions. [2020-10-13 10:26:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 10:26:02,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:02,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:02,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:26:02,208 INFO L427 AbstractCegarLoop]: === Iteration 13 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:02,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:02,208 INFO L82 PathProgramCache]: Analyzing trace with hash 900911611, now seen corresponding path program 2 times [2020-10-13 10:26:02,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:02,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956292859] [2020-10-13 10:26:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:02,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:02,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:02,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:02,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 10:26:02,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:26:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:26:03,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:26:03,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:26:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:03,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:03,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:26:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:26:03,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:03,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:26:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:03,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:03,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:03,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:03,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:03,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:26:03,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:03,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:03,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:03,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 10:26:03,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956292859] [2020-10-13 10:26:03,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:03,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:26:03,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721799996] [2020-10-13 10:26:03,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:26:03,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:03,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:26:03,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:26:03,142 INFO L87 Difference]: Start difference. First operand 219 states and 285 transitions. Second operand 14 states. [2020-10-13 10:26:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:04,021 INFO L93 Difference]: Finished difference Result 449 states and 593 transitions. [2020-10-13 10:26:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:26:04,023 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 66 [2020-10-13 10:26:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:04,026 INFO L225 Difference]: With dead ends: 449 [2020-10-13 10:26:04,026 INFO L226 Difference]: Without dead ends: 263 [2020-10-13 10:26:04,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:26:04,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-13 10:26:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 259. [2020-10-13 10:26:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-13 10:26:04,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 338 transitions. [2020-10-13 10:26:04,067 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 338 transitions. Word has length 66 [2020-10-13 10:26:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:04,067 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 338 transitions. [2020-10-13 10:26:04,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:26:04,067 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 338 transitions. [2020-10-13 10:26:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:26:04,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:04,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:04,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:26:04,069 INFO L427 AbstractCegarLoop]: === Iteration 14 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:04,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2020931159, now seen corresponding path program 2 times [2020-10-13 10:26:04,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:04,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135078906] [2020-10-13 10:26:04,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:04,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:04,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:26:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:09,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:09,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:09,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:09,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:09,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:26:09,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:26:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:26:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:26:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:09,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 10:26:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:09,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:09,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:09,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 10:26:09,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135078906] [2020-10-13 10:26:09,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:09,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:26:09,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088562709] [2020-10-13 10:26:09,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:26:09,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:09,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:26:09,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:26:09,363 INFO L87 Difference]: Start difference. First operand 259 states and 338 transitions. Second operand 15 states. [2020-10-13 10:26:10,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:10,135 INFO L93 Difference]: Finished difference Result 500 states and 658 transitions. [2020-10-13 10:26:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:26:10,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-13 10:26:10,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:10,143 INFO L225 Difference]: With dead ends: 500 [2020-10-13 10:26:10,143 INFO L226 Difference]: Without dead ends: 270 [2020-10-13 10:26:10,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:26:10,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-10-13 10:26:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 253. [2020-10-13 10:26:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-13 10:26:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 329 transitions. [2020-10-13 10:26:10,175 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 329 transitions. Word has length 68 [2020-10-13 10:26:10,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:10,177 INFO L479 AbstractCegarLoop]: Abstraction has 253 states and 329 transitions. [2020-10-13 10:26:10,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:26:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 329 transitions. [2020-10-13 10:26:10,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:26:10,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:10,178 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:10,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:26:10,179 INFO L427 AbstractCegarLoop]: === Iteration 15 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:10,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:10,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1702933776, now seen corresponding path program 5 times [2020-10-13 10:26:10,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:10,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845356303] [2020-10-13 10:26:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:10,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:10,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:15,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:15,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:26:15,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:26:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:26:15,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:26:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:15,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 10:26:15,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:15,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:15,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:15,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:15,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:15,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:15,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:15,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:15,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:15,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:26:15,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:15,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:15,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:15,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:15,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:15,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:15,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:15,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:15,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:26:15,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:15,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:15,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:15,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:15,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:15,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:15,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:15,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:26:15,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:15,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:15,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:16,226 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-13 10:26:16,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:16,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:26:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:26:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:16,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:26:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:16,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:16,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 46 proven. 40 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:26:16,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845356303] [2020-10-13 10:26:16,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:16,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:26:16,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852803448] [2020-10-13 10:26:16,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:26:16,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:16,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:26:16,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:26:16,609 INFO L87 Difference]: Start difference. First operand 253 states and 329 transitions. Second operand 20 states. [2020-10-13 10:26:17,237 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-13 10:26:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:19,319 INFO L93 Difference]: Finished difference Result 506 states and 670 transitions. [2020-10-13 10:26:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:26:19,319 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-13 10:26:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:19,322 INFO L225 Difference]: With dead ends: 506 [2020-10-13 10:26:19,322 INFO L226 Difference]: Without dead ends: 288 [2020-10-13 10:26:19,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:26:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2020-10-13 10:26:19,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 277. [2020-10-13 10:26:19,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-13 10:26:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 359 transitions. [2020-10-13 10:26:19,349 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 359 transitions. Word has length 68 [2020-10-13 10:26:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:19,349 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 359 transitions. [2020-10-13 10:26:19,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:26:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 359 transitions. [2020-10-13 10:26:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:26:19,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:19,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:19,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:26:19,351 INFO L427 AbstractCegarLoop]: === Iteration 16 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:19,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:19,351 INFO L82 PathProgramCache]: Analyzing trace with hash -188976337, now seen corresponding path program 3 times [2020-10-13 10:26:19,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:19,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709578334] [2020-10-13 10:26:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:19,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:19,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:26:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:24,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 10:26:24,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:24,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:24,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:26:24,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:24,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:24,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:24,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:24,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:26:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:26:24,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:26:24,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 10:26:24,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:26:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:24,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:26:24,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:26:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:24,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:24,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:24,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:24,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:24,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:24,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:24,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:24,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:26:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:25,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:25,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:26:25,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:25,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:25,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:25,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:25,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:25,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:25,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:26:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:25,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:25,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:25,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:25,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:25,097 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:26:25,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709578334] [2020-10-13 10:26:25,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:25,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:26:25,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256831161] [2020-10-13 10:26:25,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:26:25,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:25,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:26:25,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:26:25,100 INFO L87 Difference]: Start difference. First operand 277 states and 359 transitions. Second operand 19 states. [2020-10-13 10:26:26,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:26,617 INFO L93 Difference]: Finished difference Result 537 states and 713 transitions. [2020-10-13 10:26:26,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:26:26,618 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 69 [2020-10-13 10:26:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:26,623 INFO L225 Difference]: With dead ends: 537 [2020-10-13 10:26:26,623 INFO L226 Difference]: Without dead ends: 319 [2020-10-13 10:26:26,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:26:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-13 10:26:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 316. [2020-10-13 10:26:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-10-13 10:26:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 412 transitions. [2020-10-13 10:26:26,666 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 412 transitions. Word has length 69 [2020-10-13 10:26:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:26,666 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 412 transitions. [2020-10-13 10:26:26,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:26:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 412 transitions. [2020-10-13 10:26:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 10:26:26,669 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:26,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:26,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:26:26,670 INFO L427 AbstractCegarLoop]: === Iteration 17 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1950713833, now seen corresponding path program 3 times [2020-10-13 10:26:26,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:26,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471551918] [2020-10-13 10:26:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:26,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:27,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:26:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:31,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:31,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:31,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:31,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:31,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:31,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:26:31,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:26:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:26:31,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:26:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:26:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:31,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 10:26:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:31,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:31,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:31,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:31,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:31,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:31,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:26:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:26:32,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471551918] [2020-10-13 10:26:32,010 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:32,010 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:26:32,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966916012] [2020-10-13 10:26:32,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:26:32,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:32,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:26:32,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:26:32,011 INFO L87 Difference]: Start difference. First operand 316 states and 412 transitions. Second operand 13 states. [2020-10-13 10:26:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:33,110 INFO L93 Difference]: Finished difference Result 617 states and 814 transitions. [2020-10-13 10:26:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:26:33,111 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-10-13 10:26:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:33,113 INFO L225 Difference]: With dead ends: 617 [2020-10-13 10:26:33,114 INFO L226 Difference]: Without dead ends: 399 [2020-10-13 10:26:33,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:26:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-13 10:26:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 382. [2020-10-13 10:26:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2020-10-13 10:26:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 503 transitions. [2020-10-13 10:26:33,146 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 503 transitions. Word has length 71 [2020-10-13 10:26:33,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:33,146 INFO L479 AbstractCegarLoop]: Abstraction has 382 states and 503 transitions. [2020-10-13 10:26:33,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:26:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 503 transitions. [2020-10-13 10:26:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 10:26:33,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:33,148 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:33,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:26:33,148 INFO L427 AbstractCegarLoop]: === Iteration 18 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:33,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:33,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1230998491, now seen corresponding path program 4 times [2020-10-13 10:26:33,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:33,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997839990] [2020-10-13 10:26:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:35,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:35,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:26:35,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:26:35,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2491 [2020-10-13 10:26:35,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:26:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:35,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:26:35,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:35,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:35,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:35,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:35,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:35,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:35,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:35,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:35,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:35,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:35,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:35,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:35,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:26:35,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:36,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:26:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:36,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:26:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:36,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:36,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:36,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:26:36,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:36,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:26:36,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:36,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:26:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:36,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:26:36,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:36,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:26:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:36,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 10:26:36,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [997839990] [2020-10-13 10:26:36,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:36,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:26:36,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25706744] [2020-10-13 10:26:36,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:26:36,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:36,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:26:36,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:26:36,474 INFO L87 Difference]: Start difference. First operand 382 states and 503 transitions. Second operand 16 states. [2020-10-13 10:26:36,840 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-13 10:26:38,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:38,133 INFO L93 Difference]: Finished difference Result 682 states and 912 transitions. [2020-10-13 10:26:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:26:38,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-13 10:26:38,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:38,137 INFO L225 Difference]: With dead ends: 682 [2020-10-13 10:26:38,137 INFO L226 Difference]: Without dead ends: 398 [2020-10-13 10:26:38,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:26:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-13 10:26:38,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2020-10-13 10:26:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 10:26:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 529 transitions. [2020-10-13 10:26:38,172 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 529 transitions. Word has length 74 [2020-10-13 10:26:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:38,172 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 529 transitions. [2020-10-13 10:26:38,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:26:38,173 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 529 transitions. [2020-10-13 10:26:38,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 10:26:38,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:38,174 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:38,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:26:38,175 INFO L427 AbstractCegarLoop]: === Iteration 19 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:38,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:38,175 INFO L82 PathProgramCache]: Analyzing trace with hash -475760691, now seen corresponding path program 2 times [2020-10-13 10:26:38,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:38,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160461572] [2020-10-13 10:26:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:40,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 10:26:43,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:26:43,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 10:26:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:26:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 10:26:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:43,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:43,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:26:43,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:43,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:43,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:43,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:43,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:26:43,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:26:43,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:26:43,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:26:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:43,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:26:43,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:43,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 17 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-13 10:26:43,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160461572] [2020-10-13 10:26:43,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:43,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:26:43,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713199749] [2020-10-13 10:26:43,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:26:43,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:43,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:26:43,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:26:43,553 INFO L87 Difference]: Start difference. First operand 397 states and 529 transitions. Second operand 12 states. [2020-10-13 10:26:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:44,448 INFO L93 Difference]: Finished difference Result 707 states and 953 transitions. [2020-10-13 10:26:44,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:26:44,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-13 10:26:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:44,454 INFO L225 Difference]: With dead ends: 707 [2020-10-13 10:26:44,454 INFO L226 Difference]: Without dead ends: 410 [2020-10-13 10:26:44,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:26:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-13 10:26:44,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 397. [2020-10-13 10:26:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-10-13 10:26:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 529 transitions. [2020-10-13 10:26:44,487 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 529 transitions. Word has length 75 [2020-10-13 10:26:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:44,487 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 529 transitions. [2020-10-13 10:26:44,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:26:44,487 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 529 transitions. [2020-10-13 10:26:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 10:26:44,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:44,489 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:44,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:26:44,489 INFO L427 AbstractCegarLoop]: === Iteration 20 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:44,489 INFO L82 PathProgramCache]: Analyzing trace with hash -938303649, now seen corresponding path program 1 times [2020-10-13 10:26:44,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:44,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1722401966] [2020-10-13 10:26:44,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:44,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:45,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-13 10:26:47,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:26:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2990 [2020-10-13 10:26:47,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:26:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:47,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 10:26:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:47,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:47,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:47,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:47,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:47,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:47,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:47,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:47,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:47,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:26:47,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:26:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:47,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:47,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:47,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 10:26:47,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:47,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:26:47,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:47,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:26:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:26:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:48,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:26:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:48,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:48,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:48,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 10:26:48,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1722401966] [2020-10-13 10:26:48,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:48,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:26:48,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771567419] [2020-10-13 10:26:48,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:26:48,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:48,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:26:48,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:26:48,429 INFO L87 Difference]: Start difference. First operand 397 states and 529 transitions. Second operand 23 states. [2020-10-13 10:26:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:50,898 INFO L93 Difference]: Finished difference Result 696 states and 986 transitions. [2020-10-13 10:26:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:26:50,899 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 75 [2020-10-13 10:26:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:50,903 INFO L225 Difference]: With dead ends: 696 [2020-10-13 10:26:50,903 INFO L226 Difference]: Without dead ends: 694 [2020-10-13 10:26:50,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=256, Invalid=1814, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:26:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-13 10:26:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 631. [2020-10-13 10:26:50,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2020-10-13 10:26:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 888 transitions. [2020-10-13 10:26:50,957 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 888 transitions. Word has length 75 [2020-10-13 10:26:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:50,957 INFO L479 AbstractCegarLoop]: Abstraction has 631 states and 888 transitions. [2020-10-13 10:26:50,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:26:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 888 transitions. [2020-10-13 10:26:50,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:26:50,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:50,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:50,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:26:50,960 INFO L427 AbstractCegarLoop]: === Iteration 21 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:50,960 INFO L82 PathProgramCache]: Analyzing trace with hash -202261285, now seen corresponding path program 3 times [2020-10-13 10:26:50,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:50,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427022505] [2020-10-13 10:26:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:50,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:51,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2184 [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:26:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-13 10:26:53,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:53,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:53,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:53,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:53,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:53,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:53,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:26:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:53,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:26:53,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:53,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:26:53,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:26:53,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:26:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 10:26:53,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:53,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:26:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:53,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-13 10:26:53,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427022505] [2020-10-13 10:26:53,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:53,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:26:53,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851873017] [2020-10-13 10:26:53,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:26:53,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:53,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:26:53,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:26:53,287 INFO L87 Difference]: Start difference. First operand 631 states and 888 transitions. Second operand 6 states. [2020-10-13 10:26:53,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:26:53,571 INFO L93 Difference]: Finished difference Result 1152 states and 1652 transitions. [2020-10-13 10:26:53,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:26:53,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2020-10-13 10:26:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:26:53,576 INFO L225 Difference]: With dead ends: 1152 [2020-10-13 10:26:53,576 INFO L226 Difference]: Without dead ends: 621 [2020-10-13 10:26:53,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:26:53,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-10-13 10:26:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2020-10-13 10:26:53,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-10-13 10:26:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 860 transitions. [2020-10-13 10:26:53,626 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 860 transitions. Word has length 78 [2020-10-13 10:26:53,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:26:53,626 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 860 transitions. [2020-10-13 10:26:53,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:26:53,627 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 860 transitions. [2020-10-13 10:26:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:26:53,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:26:53,628 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:26:53,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:26:53,629 INFO L427 AbstractCegarLoop]: === Iteration 22 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:26:53,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:26:53,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1352991925, now seen corresponding path program 2 times [2020-10-13 10:26:53,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:26:53,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289309660] [2020-10-13 10:26:53,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:26:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:53,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:54,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:58,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:58,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 10:26:58,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:26:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 10:26:58,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 10:26:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:26:58,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-13 10:26:58,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:58,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:26:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:58,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:58,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:58,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:58,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:58,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:58,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:26:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:58,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:26:58,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:58,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:26:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:58,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:58,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:58,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:26:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:26:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:26:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:26:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:59,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:59,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:26:59,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:59,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:26:59,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:59,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:26:59,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:26:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:26:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:26:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:59,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:26:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:26:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:26:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:59,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:59,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:26:59,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:59,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 10:26:59,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:26:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:26:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:26:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:26:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:26:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:26:59,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:26:59,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:26:59,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:26:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:26:59,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:26:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:26:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:26:59,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:26:59,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:26:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:26:59,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289309660] [2020-10-13 10:26:59,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:26:59,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:26:59,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694230267] [2020-10-13 10:26:59,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:26:59,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:26:59,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:26:59,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:26:59,826 INFO L87 Difference]: Start difference. First operand 621 states and 860 transitions. Second operand 26 states. [2020-10-13 10:27:01,424 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-10-13 10:27:04,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:04,708 INFO L93 Difference]: Finished difference Result 1505 states and 2164 transitions. [2020-10-13 10:27:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:27:04,709 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 78 [2020-10-13 10:27:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:04,716 INFO L225 Difference]: With dead ends: 1505 [2020-10-13 10:27:04,716 INFO L226 Difference]: Without dead ends: 984 [2020-10-13 10:27:04,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2020-10-13 10:27:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-10-13 10:27:04,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 929. [2020-10-13 10:27:04,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-10-13 10:27:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1342 transitions. [2020-10-13 10:27:04,802 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1342 transitions. Word has length 78 [2020-10-13 10:27:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:04,803 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1342 transitions. [2020-10-13 10:27:04,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:27:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1342 transitions. [2020-10-13 10:27:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-13 10:27:04,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:04,804 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:04,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:27:04,805 INFO L427 AbstractCegarLoop]: === Iteration 23 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:04,805 INFO L82 PathProgramCache]: Analyzing trace with hash 220440541, now seen corresponding path program 3 times [2020-10-13 10:27:04,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:04,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657662907] [2020-10-13 10:27:04,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:04,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:05,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:09,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:09,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 10:27:09,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:10,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:10,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:27:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:10,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:27:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,409 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-13 10:27:10,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:10,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:27:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:27:10,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 10:27:10,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:27:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:27:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 10:27:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:10,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:27:10,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:10,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 28 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-13 10:27:10,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657662907] [2020-10-13 10:27:10,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:10,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:27:10,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822329423] [2020-10-13 10:27:10,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:27:10,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:10,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:27:10,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:27:10,970 INFO L87 Difference]: Start difference. First operand 929 states and 1342 transitions. Second operand 17 states. [2020-10-13 10:27:12,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:12,765 INFO L93 Difference]: Finished difference Result 1759 states and 2558 transitions. [2020-10-13 10:27:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:27:12,766 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-10-13 10:27:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:12,772 INFO L225 Difference]: With dead ends: 1759 [2020-10-13 10:27:12,772 INFO L226 Difference]: Without dead ends: 932 [2020-10-13 10:27:12,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:27:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2020-10-13 10:27:12,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 922. [2020-10-13 10:27:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2020-10-13 10:27:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1319 transitions. [2020-10-13 10:27:12,875 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1319 transitions. Word has length 78 [2020-10-13 10:27:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:12,875 INFO L479 AbstractCegarLoop]: Abstraction has 922 states and 1319 transitions. [2020-10-13 10:27:12,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:27:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1319 transitions. [2020-10-13 10:27:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-13 10:27:12,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:12,877 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:12,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:27:12,877 INFO L427 AbstractCegarLoop]: === Iteration 24 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2036094773, now seen corresponding path program 6 times [2020-10-13 10:27:12,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:12,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1309037833] [2020-10-13 10:27:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:13,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:13,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:17,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:27:17,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:17,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 10:27:17,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:18,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:18,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:27:18,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:27:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:27:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:18,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:18,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:18,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:18,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:27:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:27:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:18,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:27:18,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:27:18,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:18,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:27:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:18,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:18,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:18,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:18,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:27:18,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:27:18,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:18,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 127 proven. 47 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 10:27:18,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1309037833] [2020-10-13 10:27:18,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:18,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:27:18,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212480648] [2020-10-13 10:27:18,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:27:18,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:18,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:27:18,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:27:18,753 INFO L87 Difference]: Start difference. First operand 922 states and 1319 transitions. Second operand 20 states. [2020-10-13 10:27:19,180 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-13 10:27:21,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:21,636 INFO L93 Difference]: Finished difference Result 1690 states and 2477 transitions. [2020-10-13 10:27:21,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:27:21,638 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 89 [2020-10-13 10:27:21,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:21,644 INFO L225 Difference]: With dead ends: 1690 [2020-10-13 10:27:21,645 INFO L226 Difference]: Without dead ends: 798 [2020-10-13 10:27:21,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:27:21,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-10-13 10:27:21,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 732. [2020-10-13 10:27:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-13 10:27:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1035 transitions. [2020-10-13 10:27:21,710 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1035 transitions. Word has length 89 [2020-10-13 10:27:21,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:21,711 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1035 transitions. [2020-10-13 10:27:21,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:27:21,711 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1035 transitions. [2020-10-13 10:27:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 10:27:21,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:21,713 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:21,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:27:21,713 INFO L427 AbstractCegarLoop]: === Iteration 25 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1556096651, now seen corresponding path program 7 times [2020-10-13 10:27:21,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:21,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1439939120] [2020-10-13 10:27:21,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:21,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:23,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:23,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:26,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:26,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 10:27:26,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:27:26,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 10:27:26,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 10:27:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:26,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 10:27:26,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:27,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:27,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:27,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:27:27,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:27,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:27:27,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:27,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:27,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:27,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:27,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:27,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:27,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:27,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:27,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:27:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:27,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:28,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:28,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:28,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:28,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:28,316 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-13 10:27:28,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:27:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:28,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:27:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:27:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:28,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:28,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:28,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:28,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:27:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:28,725 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-13 10:27:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 83 proven. 70 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-13 10:27:28,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1439939120] [2020-10-13 10:27:28,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:28,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:27:28,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342288616] [2020-10-13 10:27:28,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:27:28,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:28,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:27:28,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:27:28,781 INFO L87 Difference]: Start difference. First operand 732 states and 1035 transitions. Second operand 24 states. [2020-10-13 10:27:29,655 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 101 [2020-10-13 10:27:32,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:32,528 INFO L93 Difference]: Finished difference Result 773 states and 1087 transitions. [2020-10-13 10:27:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:27:32,529 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 92 [2020-10-13 10:27:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:32,532 INFO L225 Difference]: With dead ends: 773 [2020-10-13 10:27:32,533 INFO L226 Difference]: Without dead ends: 771 [2020-10-13 10:27:32,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=124, Invalid=1136, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:27:32,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-10-13 10:27:32,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 757. [2020-10-13 10:27:32,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-13 10:27:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1066 transitions. [2020-10-13 10:27:32,591 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1066 transitions. Word has length 92 [2020-10-13 10:27:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:32,592 INFO L479 AbstractCegarLoop]: Abstraction has 757 states and 1066 transitions. [2020-10-13 10:27:32,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:27:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1066 transitions. [2020-10-13 10:27:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-13 10:27:32,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:32,594 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 10:27:32,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:27:32,594 INFO L427 AbstractCegarLoop]: === Iteration 26 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:32,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1750219878, now seen corresponding path program 4 times [2020-10-13 10:27:32,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:32,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259368101] [2020-10-13 10:27:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 10:27:37,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:27:37,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 10:27:37,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:27:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:37,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 10:27:37,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:37,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:37,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:37,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:27:37,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:37,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:37,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:37,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:27:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:37,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:37,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:27:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:37,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:27:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:27:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:27:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:37,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:27:37,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:37,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:37,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:27:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:37,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:37,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:37,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:27:37,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 10:27:37,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:27:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:37,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:27:37,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:38,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:27:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:38,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:38,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:38,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:38,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:27:38,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:38,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:27:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:38,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:38,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:27:38,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:27:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:27:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:27:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:27:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:38,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 10:27:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:38,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:38,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:38,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 57 proven. 23 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-13 10:27:38,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259368101] [2020-10-13 10:27:38,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:38,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:27:38,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776677112] [2020-10-13 10:27:38,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:27:38,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:38,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:27:38,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:27:38,071 INFO L87 Difference]: Start difference. First operand 757 states and 1066 transitions. Second operand 16 states. [2020-10-13 10:27:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:39,180 INFO L93 Difference]: Finished difference Result 1282 states and 1803 transitions. [2020-10-13 10:27:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:27:39,181 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 93 [2020-10-13 10:27:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:39,185 INFO L225 Difference]: With dead ends: 1282 [2020-10-13 10:27:39,186 INFO L226 Difference]: Without dead ends: 646 [2020-10-13 10:27:39,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:27:39,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-10-13 10:27:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 587. [2020-10-13 10:27:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2020-10-13 10:27:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 795 transitions. [2020-10-13 10:27:39,242 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 795 transitions. Word has length 93 [2020-10-13 10:27:39,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:39,242 INFO L479 AbstractCegarLoop]: Abstraction has 587 states and 795 transitions. [2020-10-13 10:27:39,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:27:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 795 transitions. [2020-10-13 10:27:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-13 10:27:39,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:39,244 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:39,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:27:39,245 INFO L427 AbstractCegarLoop]: === Iteration 27 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:39,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2097157279, now seen corresponding path program 8 times [2020-10-13 10:27:39,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:39,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [232424451] [2020-10-13 10:27:39,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:40,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:44,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 10:27:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:44,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 10:27:44,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,042 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-13 10:27:45,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:45,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:27:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:27:45,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:27:45,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:45,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:45,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:27:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:45,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:27:45,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:45,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:45,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:27:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:27:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 10:27:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:46,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:46,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:46,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 10:27:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:46,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 130 proven. 109 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-13 10:27:46,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [232424451] [2020-10-13 10:27:46,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:46,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:27:46,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290962844] [2020-10-13 10:27:46,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:27:46,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:46,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:27:46,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=856, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:27:46,484 INFO L87 Difference]: Start difference. First operand 587 states and 795 transitions. Second operand 31 states. [2020-10-13 10:27:47,143 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-10-13 10:27:49,963 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-13 10:27:50,128 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-13 10:27:50,421 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-10-13 10:27:50,833 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2020-10-13 10:27:51,757 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-13 10:27:52,113 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2020-10-13 10:27:52,401 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-10-13 10:27:52,770 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2020-10-13 10:27:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:53,807 INFO L93 Difference]: Finished difference Result 1190 states and 1654 transitions. [2020-10-13 10:27:53,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-13 10:27:53,808 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 95 [2020-10-13 10:27:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:53,812 INFO L225 Difference]: With dead ends: 1190 [2020-10-13 10:27:53,813 INFO L226 Difference]: Without dead ends: 723 [2020-10-13 10:27:53,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=456, Invalid=3834, Unknown=0, NotChecked=0, Total=4290 [2020-10-13 10:27:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-10-13 10:27:53,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 618. [2020-10-13 10:27:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-13 10:27:53,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 830 transitions. [2020-10-13 10:27:53,879 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 830 transitions. Word has length 95 [2020-10-13 10:27:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:53,879 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 830 transitions. [2020-10-13 10:27:53,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:27:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 830 transitions. [2020-10-13 10:27:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 10:27:53,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:53,881 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 10:27:53,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:27:53,882 INFO L427 AbstractCegarLoop]: === Iteration 28 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1724349574, now seen corresponding path program 5 times [2020-10-13 10:27:53,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:53,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428553352] [2020-10-13 10:27:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:55,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:56,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 10:27:59,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:27:59,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 10:27:59,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:27:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:59,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 10:27:59,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:59,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:59,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:27:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:27:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:27:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:27:59,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:27:59,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:27:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:27:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:27:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:27:59,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:27:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:59,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:27:59,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:59,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:27:59,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:00,059 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-13 10:28:00,246 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-13 10:28:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:28:00,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:00,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:00,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:00,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:00,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:00,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:00,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:28:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:00,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:00,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:00,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:00,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:00,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:28:00,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:00,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:00,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:00,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 10:28:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:00,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:00,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:00,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:00,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:28:00,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:00,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:00,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:00,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 63 proven. 17 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-13 10:28:00,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428553352] [2020-10-13 10:28:00,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:00,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:28:00,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785966216] [2020-10-13 10:28:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:28:00,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:00,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:28:00,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:28:00,593 INFO L87 Difference]: Start difference. First operand 618 states and 830 transitions. Second operand 22 states. [2020-10-13 10:28:00,986 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 10:28:02,724 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-13 10:28:03,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:03,678 INFO L93 Difference]: Finished difference Result 754 states and 1041 transitions. [2020-10-13 10:28:03,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:28:03,679 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-13 10:28:03,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:03,684 INFO L225 Difference]: With dead ends: 754 [2020-10-13 10:28:03,684 INFO L226 Difference]: Without dead ends: 752 [2020-10-13 10:28:03,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=190, Invalid=1370, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:28:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2020-10-13 10:28:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 713. [2020-10-13 10:28:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-10-13 10:28:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 978 transitions. [2020-10-13 10:28:03,757 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 978 transitions. Word has length 96 [2020-10-13 10:28:03,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:03,758 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 978 transitions. [2020-10-13 10:28:03,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:28:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 978 transitions. [2020-10-13 10:28:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 10:28:03,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:03,760 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:03,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:28:03,760 INFO L427 AbstractCegarLoop]: === Iteration 29 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:03,760 INFO L82 PathProgramCache]: Analyzing trace with hash 224763232, now seen corresponding path program 5 times [2020-10-13 10:28:03,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:03,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192664790] [2020-10-13 10:28:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:03,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:04,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:28:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:08,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 10:28:08,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:09,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:09,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:09,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:09,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:28:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:09,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:28:09,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:28:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:09,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:28:09,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:09,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:28:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:09,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:28:09,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:09,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:09,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:28:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:28:09,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:28:09,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:09,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:28:09,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:28:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:09,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:28:09,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:09,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:09,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:28:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:28:09,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 10:28:09,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:28:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:09,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:28:09,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:09,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:28:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:09,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:09,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:09,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:28:09,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 10:28:09,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:28:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:09,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:28:09,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:10,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 10:28:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:10,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:10,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:10,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:28:10,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:10,176 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 82 proven. 39 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 10:28:10,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192664790] [2020-10-13 10:28:10,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:10,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:28:10,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33465770] [2020-10-13 10:28:10,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:28:10,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:10,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:28:10,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:28:10,178 INFO L87 Difference]: Start difference. First operand 713 states and 978 transitions. Second operand 23 states. [2020-10-13 10:28:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:13,676 INFO L93 Difference]: Finished difference Result 1360 states and 1911 transitions. [2020-10-13 10:28:13,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:28:13,678 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 98 [2020-10-13 10:28:13,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:13,684 INFO L225 Difference]: With dead ends: 1360 [2020-10-13 10:28:13,684 INFO L226 Difference]: Without dead ends: 773 [2020-10-13 10:28:13,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:28:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2020-10-13 10:28:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 720. [2020-10-13 10:28:13,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2020-10-13 10:28:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 993 transitions. [2020-10-13 10:28:13,759 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 993 transitions. Word has length 98 [2020-10-13 10:28:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:13,759 INFO L479 AbstractCegarLoop]: Abstraction has 720 states and 993 transitions. [2020-10-13 10:28:13,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:28:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 993 transitions. [2020-10-13 10:28:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 10:28:13,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:13,762 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:13,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:28:13,762 INFO L427 AbstractCegarLoop]: === Iteration 30 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:13,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:13,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1919446701, now seen corresponding path program 4 times [2020-10-13 10:28:13,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:13,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293813542] [2020-10-13 10:28:13,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:14,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:14,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:15,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:15,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 10:28:18,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:18,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:18,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:28:18,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:28:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:18,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:18,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:28:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:28:18,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:28:18,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:28:18,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:28:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 10:28:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:28:18,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:18,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 10:28:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:18,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:18,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 10:28:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:19,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:19,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:19,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 10:28:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:19,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:19,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:28:19,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 10:28:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:19,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:19,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:19,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:19,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 33 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-13 10:28:19,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293813542] [2020-10-13 10:28:19,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:19,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:28:19,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649682978] [2020-10-13 10:28:19,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:28:19,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:19,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:28:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:28:19,177 INFO L87 Difference]: Start difference. First operand 720 states and 993 transitions. Second operand 12 states. [2020-10-13 10:28:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:20,148 INFO L93 Difference]: Finished difference Result 1357 states and 1895 transitions. [2020-10-13 10:28:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:28:20,149 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-10-13 10:28:20,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:20,154 INFO L225 Difference]: With dead ends: 1357 [2020-10-13 10:28:20,154 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 10:28:20,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:28:20,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 10:28:20,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 707. [2020-10-13 10:28:20,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2020-10-13 10:28:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 973 transitions. [2020-10-13 10:28:20,227 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 973 transitions. Word has length 99 [2020-10-13 10:28:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:20,227 INFO L479 AbstractCegarLoop]: Abstraction has 707 states and 973 transitions. [2020-10-13 10:28:20,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:28:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 973 transitions. [2020-10-13 10:28:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 10:28:20,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:20,229 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 10:28:20,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:28:20,230 INFO L427 AbstractCegarLoop]: === Iteration 31 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:20,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1703179762, now seen corresponding path program 5 times [2020-10-13 10:28:20,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:20,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743291994] [2020-10-13 10:28:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:20,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:20,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:20,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 10:28:25,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:28:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:28:25,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:28:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-13 10:28:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:25,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:28:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:25,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:28:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:25,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:28:25,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:28:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:25,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:28:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:28:25,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:28:25,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:28:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:28:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:25,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:28:25,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:25,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:28:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:25,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:28:25,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:28:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:25,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:28:25,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-13 10:28:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:25,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:25,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:25,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:25,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:25,710 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-13 10:28:25,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743291994] [2020-10-13 10:28:25,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:25,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:28:25,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840850896] [2020-10-13 10:28:25,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:28:25,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:28:25,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:28:25,712 INFO L87 Difference]: Start difference. First operand 707 states and 973 transitions. Second operand 13 states. [2020-10-13 10:28:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:26,953 INFO L93 Difference]: Finished difference Result 1331 states and 1862 transitions. [2020-10-13 10:28:26,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:28:26,954 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 99 [2020-10-13 10:28:26,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:26,957 INFO L225 Difference]: With dead ends: 1331 [2020-10-13 10:28:26,957 INFO L226 Difference]: Without dead ends: 737 [2020-10-13 10:28:26,960 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:28:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-13 10:28:27,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 732. [2020-10-13 10:28:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-13 10:28:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1018 transitions. [2020-10-13 10:28:27,034 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1018 transitions. Word has length 99 [2020-10-13 10:28:27,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:27,035 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 1018 transitions. [2020-10-13 10:28:27,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:28:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1018 transitions. [2020-10-13 10:28:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 10:28:27,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:27,037 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-13 10:28:27,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:28:27,037 INFO L427 AbstractCegarLoop]: === Iteration 32 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:27,038 INFO L82 PathProgramCache]: Analyzing trace with hash -2001815356, now seen corresponding path program 6 times [2020-10-13 10:28:27,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:27,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941377117] [2020-10-13 10:28:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:29,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:32,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 10:28:32,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:32,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:32,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:32,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:32,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:28:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:32,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:32,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:32,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:32,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:32,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:28:32,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:32,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:32,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:28:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:32,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:32,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:28:32,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:28:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:28:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:32,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:32,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:32,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:33,188 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-13 10:28:33,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:28:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:33,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:33,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:33,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:28:33,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:33,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:28:33,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:33,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:28:33,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:33,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 10:28:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:33,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:33,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:28:33,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:33,769 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2020-10-13 10:28:34,051 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-13 10:28:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 10:28:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:34,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:34,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:28:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-13 10:28:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:34,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 10:28:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:34,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:34,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:34,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:34,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:28:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:34,402 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 69 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-13 10:28:34,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941377117] [2020-10-13 10:28:34,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:34,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 10:28:34,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140914706] [2020-10-13 10:28:34,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 10:28:34,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 10:28:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:28:34,405 INFO L87 Difference]: Start difference. First operand 732 states and 1018 transitions. Second operand 28 states. [2020-10-13 10:28:35,035 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2020-10-13 10:28:37,208 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-13 10:28:39,976 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2020-10-13 10:28:40,693 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2020-10-13 10:28:41,062 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-10-13 10:28:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:43,159 INFO L93 Difference]: Finished difference Result 1703 states and 2414 transitions. [2020-10-13 10:28:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-13 10:28:43,161 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 99 [2020-10-13 10:28:43,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:43,172 INFO L225 Difference]: With dead ends: 1703 [2020-10-13 10:28:43,172 INFO L226 Difference]: Without dead ends: 1097 [2020-10-13 10:28:43,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=380, Invalid=3652, Unknown=0, NotChecked=0, Total=4032 [2020-10-13 10:28:43,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2020-10-13 10:28:43,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1041. [2020-10-13 10:28:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-13 10:28:43,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1467 transitions. [2020-10-13 10:28:43,312 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1467 transitions. Word has length 99 [2020-10-13 10:28:43,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:43,313 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1467 transitions. [2020-10-13 10:28:43,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 10:28:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1467 transitions. [2020-10-13 10:28:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 10:28:43,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:43,316 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:43,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:28:43,317 INFO L427 AbstractCegarLoop]: === Iteration 33 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:43,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1644715580, now seen corresponding path program 6 times [2020-10-13 10:28:43,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:43,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626783541] [2020-10-13 10:28:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:43,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:48,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:48,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 10:28:48,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:48,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:48,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:48,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:48,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:48,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:48,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:28:48,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:48,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:48,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:48,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:28:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:48,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:48,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:28:48,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:48,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:28:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:48,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:28:48,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:28:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:48,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:28:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:49,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:49,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:49,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:28:49,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:49,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:49,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:28:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:49,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:49,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:28:49,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:49,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:28:49,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:49,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:28:49,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:49,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:28:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:49,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:49,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:49,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:49,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:28:49,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:49,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:49,807 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-13 10:28:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:28:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:28:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:28:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:28:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:49,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:28:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:28:50,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:50,444 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-10-13 10:28:50,726 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-13 10:28:50,922 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-13 10:28:51,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 10:28:51,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:51,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:51,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:51,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:51,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:51,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 52 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-13 10:28:51,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626783541] [2020-10-13 10:28:51,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:51,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:28:51,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113470799] [2020-10-13 10:28:51,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:28:51,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:28:51,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:28:51,240 INFO L87 Difference]: Start difference. First operand 1041 states and 1467 transitions. Second operand 21 states. [2020-10-13 10:28:52,135 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2020-10-13 10:28:55,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:55,203 INFO L93 Difference]: Finished difference Result 1964 states and 2799 transitions. [2020-10-13 10:28:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:28:55,204 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 101 [2020-10-13 10:28:55,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:55,213 INFO L225 Difference]: With dead ends: 1964 [2020-10-13 10:28:55,213 INFO L226 Difference]: Without dead ends: 1054 [2020-10-13 10:28:55,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:28:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-13 10:28:55,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1051. [2020-10-13 10:28:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-10-13 10:28:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1492 transitions. [2020-10-13 10:28:55,325 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1492 transitions. Word has length 101 [2020-10-13 10:28:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:55,326 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1492 transitions. [2020-10-13 10:28:55,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:28:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1492 transitions. [2020-10-13 10:28:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 10:28:55,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:55,328 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:55,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:28:55,329 INFO L427 AbstractCegarLoop]: === Iteration 34 === [check_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:55,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1100235880, now seen corresponding path program 7 times [2020-10-13 10:28:55,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:55,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937551691] [2020-10-13 10:28:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:55,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:56,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 10:29:00,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:00,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 10:29:00,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:29:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:29:00,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 10:29:00,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:00,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:00,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 10:29:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:29:00,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:29:00,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:29:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:00,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:29:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 10:29:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:29:00,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:29:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:29:00,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 10:29:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:00,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:29:00,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:29:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 10:29:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:00,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 10:29:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:29:00,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0