/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:07:25,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:07:25,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:07:25,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:07:25,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:07:25,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:07:25,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:07:25,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:07:25,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:07:25,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:07:25,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:07:25,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:07:25,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:07:25,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:07:25,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:07:25,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:07:25,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:07:25,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:07:25,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:07:25,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:07:25,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:07:25,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:07:25,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:07:25,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:07:25,682 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:07:25,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:07:25,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:07:25,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:07:25,684 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:07:25,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:07:25,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:07:25,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:07:25,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:07:25,687 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:07:25,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:07:25,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:07:25,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:07:25,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:07:25,689 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:07:25,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:07:25,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:07:25,691 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 [2020-10-14 05:07:25,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:07:25,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:07:25,714 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:07:25,714 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:07:25,714 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:07:25,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:07:25,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:07:25,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:07:25,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:07:25,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:07:25,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:07:25,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:07:25,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:07:25,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:07:25,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:07:25,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:07:25,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:07:25,718 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:07:25,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:07:25,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:07:25,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:07:25,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:07:25,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:07:25,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:07:25,719 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:07:25,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:07:25,998 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:07:26,002 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:07:26,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:07:26,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:07:26,004 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-14 05:07:26,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1fd2ee8/24941f921c2849d790292a3d4fccb217/FLAG5e4aee21d [2020-10-14 05:07:26,625 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:07:26,626 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_append_equal.i [2020-10-14 05:07:26,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1fd2ee8/24941f921c2849d790292a3d4fccb217/FLAG5e4aee21d [2020-10-14 05:07:26,937 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2d1fd2ee8/24941f921c2849d790292a3d4fccb217 [2020-10-14 05:07:26,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:07:26,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:07:26,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:26,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:07:26,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:07:26,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:26" (1/1) ... [2020-10-14 05:07:26,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1333f6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:26, skipping insertion in model container [2020-10-14 05:07:26,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:07:26" (1/1) ... [2020-10-14 05:07:26,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:07:27,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:07:27,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:27,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:07:27,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:07:27,544 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:07:27,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27 WrapperNode [2020-10-14 05:07:27,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:07:27,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:07:27,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:07:27,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:07:27,559 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (1/1) ... [2020-10-14 05:07:27,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:07:27,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:07:27,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:07:27,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:07:27,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (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 [2020-10-14 05:07:27,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:07:27,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-14 05:07:27,674 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_append [2020-10-14 05:07:27,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:07:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:07:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:07:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:07:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:07:27,675 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:07:27,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:07:27,677 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:07:27,678 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:07:27,679 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:07:27,680 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:07:27,681 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:07:27,682 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:07:27,683 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:07:27,684 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:07:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:07:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:07:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:07:27,688 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:07:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 05:07:27,690 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure dll_append [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:07:27,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:07:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:07:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:07:27,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:07:28,101 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:07:28,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:07:28,324 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 05:07:28,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:28 BoogieIcfgContainer [2020-10-14 05:07:28,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:07:28,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:07:28,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:07:28,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:07:28,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:07:26" (1/3) ... [2020-10-14 05:07:28,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dfb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:28, skipping insertion in model container [2020-10-14 05:07:28,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:07:27" (2/3) ... [2020-10-14 05:07:28,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dfb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:07:28, skipping insertion in model container [2020-10-14 05:07:28,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:07:28" (3/3) ... [2020-10-14 05:07:28,353 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_append_equal.i [2020-10-14 05:07:28,362 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:07:28,368 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:07:28,379 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:07:28,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:07:28,403 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:07:28,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:07:28,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:07:28,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:07:28,404 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:07:28,404 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:07:28,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:07:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-14 05:07:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:07:28,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:28,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:28,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:28,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash -683309345, now seen corresponding path program 1 times [2020-10-14 05:07:28,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:28,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991792932] [2020-10-14 05:07:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:28,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:28,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:29,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:30,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:07:30,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:30,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1404 [2020-10-14 05:07:30,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:30,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:30,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:30,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:07:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:30,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:30,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:30,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:30,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:30,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:30,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:30,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:30,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:30,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:30,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:30,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:30,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:30,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:30,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:07:30,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:30,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:30,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:30,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:30,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:07:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:30,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:30,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:30,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:07:30,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:30,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:30,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:30,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:30,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:30,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:07:30,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:30,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:30,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:30,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:30,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:07:30,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991792932] [2020-10-14 05:07:30,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:30,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:07:30,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959946343] [2020-10-14 05:07:30,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:07:30,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:30,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:07:30,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:30,282 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 7 states. [2020-10-14 05:07:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:30,612 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2020-10-14 05:07:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:07:30,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-14 05:07:30,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:30,623 INFO L225 Difference]: With dead ends: 100 [2020-10-14 05:07:30,623 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:07:30,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:07:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:07:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-10-14 05:07:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 05:07:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2020-10-14 05:07:30,675 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 29 [2020-10-14 05:07:30,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:30,676 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2020-10-14 05:07:30,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:07:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2020-10-14 05:07:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:07:30,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:30,679 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:30,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:07:30,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:30,680 INFO L82 PathProgramCache]: Analyzing trace with hash 197719891, now seen corresponding path program 1 times [2020-10-14 05:07:30,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:30,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292166892] [2020-10-14 05:07:30,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:30,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:31,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:33,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:07:35,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:07:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 05:07:35,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:35,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:35,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:07:35,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:35,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:35,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:07:35,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:07:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:07:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:35,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:35,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:07:35,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:07:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:35,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:35,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:07:35,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:35,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:35,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:35,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:35,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:35,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:07:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:35,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:07:35,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292166892] [2020-10-14 05:07:35,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:35,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:07:35,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127018161] [2020-10-14 05:07:35,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:07:35,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:35,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:07:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:07:35,865 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 5 states. [2020-10-14 05:07:36,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:36,020 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2020-10-14 05:07:36,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 05:07:36,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 05:07:36,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:36,022 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:07:36,023 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:07:36,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:07:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:07:36,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-10-14 05:07:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:07:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-14 05:07:36,033 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 39 [2020-10-14 05:07:36,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:36,033 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-14 05:07:36,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:07:36,034 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-14 05:07:36,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 05:07:36,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:36,036 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:36,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:07:36,036 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:36,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:36,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1607718443, now seen corresponding path program 1 times [2020-10-14 05:07:36,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:36,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543283722] [2020-10-14 05:07:36,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:36,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:37,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:37,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:38,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:38,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 05:07:41,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 05:07:41,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:07:41,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:41,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:41,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:41,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:41,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:07:41,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:41,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:41,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:41,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:07:41,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:41,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 05:07:41,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:07:41,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:07:41,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:41,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:07:41,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:41,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:41,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 05:07:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:41,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:41,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:07:41,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:41,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:41,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:41,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:41,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:07:41,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:41,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:41,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:07:41,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543283722] [2020-10-14 05:07:41,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:41,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:07:41,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625442607] [2020-10-14 05:07:41,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:07:41,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:41,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:07:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:07:41,287 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-10-14 05:07:41,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:41,514 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2020-10-14 05:07:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:07:41,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2020-10-14 05:07:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:41,516 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:07:41,516 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 05:07:41,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:07:41,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 05:07:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-10-14 05:07:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:07:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-14 05:07:41,526 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 39 [2020-10-14 05:07:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:41,526 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-14 05:07:41,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:07:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-14 05:07:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:07:41,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:41,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:41,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:07:41,529 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:41,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:41,529 INFO L82 PathProgramCache]: Analyzing trace with hash 974184137, now seen corresponding path program 1 times [2020-10-14 05:07:41,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:41,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131111160] [2020-10-14 05:07:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:41,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:42,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:44,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:45,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:07:46,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:07:46,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 05:07:46,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:07:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:07:46,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:07:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:46,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:07:46,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:07:46,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:46,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:07:46,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:07:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:46,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:46,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:46,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:46,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:07:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:46,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:07:46,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:07:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:07:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:46,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:46,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:46,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:46,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:46,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:07:46,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:46,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:07:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:46,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:07:46,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131111160] [2020-10-14 05:07:46,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:46,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:07:46,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402735885] [2020-10-14 05:07:46,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:07:46,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:46,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:07:46,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:07:46,863 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 12 states. [2020-10-14 05:07:47,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:47,158 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-10-14 05:07:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:07:47,158 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 05:07:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:47,160 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:07:47,160 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 05:07:47,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:07:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 05:07:47,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-14 05:07:47,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 05:07:47,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-14 05:07:47,169 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 49 [2020-10-14 05:07:47,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:47,170 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-14 05:07:47,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:07:47,170 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-14 05:07:47,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 05:07:47,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:47,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:47,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:07:47,172 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:47,172 INFO L82 PathProgramCache]: Analyzing trace with hash 974185811, now seen corresponding path program 1 times [2020-10-14 05:07:47,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:47,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1333198040] [2020-10-14 05:07:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:47,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:47,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:07:49,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:49,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1921 [2020-10-14 05:07:49,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:07:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:49,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 05:07:49,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:49,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:49,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:49,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:49,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:49,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:07:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:07:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:07:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:49,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:49,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:07:49,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:49,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:49,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:07:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:07:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:49,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 05:07:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:07:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:07:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:49,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:49,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:49,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:07:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:07:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:07:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:07:49,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1333198040] [2020-10-14 05:07:49,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:07:49,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-14 05:07:49,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778428303] [2020-10-14 05:07:49,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:07:49,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:49,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:07:49,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:07:49,658 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 14 states. [2020-10-14 05:07:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:50,362 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-14 05:07:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:07:50,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-14 05:07:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:50,363 INFO L225 Difference]: With dead ends: 56 [2020-10-14 05:07:50,363 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:07:50,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:07:50,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:07:50,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2020-10-14 05:07:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 05:07:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-14 05:07:50,375 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 49 [2020-10-14 05:07:50,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:50,376 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-14 05:07:50,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:07:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-14 05:07:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:07:50,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:50,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:50,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:07:50,378 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:50,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:50,378 INFO L82 PathProgramCache]: Analyzing trace with hash -110261276, now seen corresponding path program 1 times [2020-10-14 05:07:50,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:50,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484805371] [2020-10-14 05:07:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:50,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:52,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:07:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:07:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-10-14 05:07:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:52,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:07:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:07:52,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:07:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:52,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:52,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:52,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:52,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:07:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:53,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:07:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:53,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:07:53,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:53,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:07:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:53,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 05:07:53,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:07:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:53,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:07:53,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:53,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:53,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:53,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:53,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:07:53,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:53,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:07:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:07:53,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:07:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:07:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:07:53,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484805371] [2020-10-14 05:07:53,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:53,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:07:53,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559827514] [2020-10-14 05:07:53,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:07:53,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:53,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:07:53,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:07:53,635 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 23 states. [2020-10-14 05:07:55,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:55,195 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-14 05:07:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:07:55,195 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 51 [2020-10-14 05:07:55,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:55,198 INFO L225 Difference]: With dead ends: 67 [2020-10-14 05:07:55,199 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 05:07:55,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:07:55,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 05:07:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-14 05:07:55,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 05:07:55,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-10-14 05:07:55,209 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 51 [2020-10-14 05:07:55,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:55,209 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-10-14 05:07:55,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:07:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-10-14 05:07:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:07:55,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:55,211 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:55,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:07:55,212 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:55,212 INFO L82 PathProgramCache]: Analyzing trace with hash 30287334, now seen corresponding path program 1 times [2020-10-14 05:07:55,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:55,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857351228] [2020-10-14 05:07:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:57,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3491 [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:07:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 05:07:58,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:07:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:07:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:58,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:07:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:07:58,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:07:58,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:07:58,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:07:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:07:58,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:07:58,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:07:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:07:58,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:58,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:07:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:07:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:58,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:58,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:07:58,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:07:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:58,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:07:58,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:07:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:07:58,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:58,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:07:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:58,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:07:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:07:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:07:58,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:07:58,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:07:58,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:07:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:07:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:07:58,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:07:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:07:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 05:07:58,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857351228] [2020-10-14 05:07:58,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:07:58,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:07:58,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536182402] [2020-10-14 05:07:58,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:07:58,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:07:58,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:07:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:07:58,973 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 9 states. [2020-10-14 05:07:59,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:07:59,179 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-10-14 05:07:59,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:07:59,180 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-14 05:07:59,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:07:59,181 INFO L225 Difference]: With dead ends: 88 [2020-10-14 05:07:59,181 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 05:07:59,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:07:59,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 05:07:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 05:07:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:07:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 05:07:59,189 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 51 [2020-10-14 05:07:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:07:59,190 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 05:07:59,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:07:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 05:07:59,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:07:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:07:59,191 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:07:59,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:07:59,191 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:07:59,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:07:59,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1981397546, now seen corresponding path program 1 times [2020-10-14 05:07:59,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:07:59,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096646992] [2020-10-14 05:07:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:07:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:07:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:59,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:07:59,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:01,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:02,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:04,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:08:04,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:08:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:04,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:08:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:08:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:04,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:04,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:04,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:08:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:04,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:08:04,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:08:04,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,831 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 45 [2020-10-14 05:08:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:04,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:04,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:04,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:04,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:08:04,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:04,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:04,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:04,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 05:08:04,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096646992] [2020-10-14 05:08:04,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:08:04,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 05:08:04,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459813981] [2020-10-14 05:08:04,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:08:04,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:04,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:08:04,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:08:04,923 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 13 states. [2020-10-14 05:08:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:05,370 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-14 05:08:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:08:05,371 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-10-14 05:08:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:05,372 INFO L225 Difference]: With dead ends: 63 [2020-10-14 05:08:05,372 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 05:08:05,373 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:08:05,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 05:08:05,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2020-10-14 05:08:05,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:08:05,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-14 05:08:05,381 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 52 [2020-10-14 05:08:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:05,381 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-14 05:08:05,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:08:05,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-14 05:08:05,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:08:05,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:05,383 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:05,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:08:05,383 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:05,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:05,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1981395872, now seen corresponding path program 1 times [2020-10-14 05:08:05,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:05,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467382017] [2020-10-14 05:08:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:06,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2605 [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:08:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:08,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:08:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:08,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:08:08,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:08:08,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:08:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,406 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-14 05:08:08,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:08:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:08,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:08,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:08:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:08,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:08:08,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:08:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:08:08,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:08,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:08,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:08,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:08,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:08:08,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:08,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:08:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:08,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:08:08,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:09,184 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-14 05:08:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:08:09,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467382017] [2020-10-14 05:08:09,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:09,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:08:09,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638746383] [2020-10-14 05:08:09,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:08:09,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:09,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:08:09,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:08:09,200 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 21 states. [2020-10-14 05:08:10,659 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-14 05:08:10,912 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-14 05:08:11,169 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-14 05:08:11,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:11,308 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-10-14 05:08:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:08:11,309 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 52 [2020-10-14 05:08:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:11,311 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:08:11,311 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:08:11,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:08:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:08:11,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-14 05:08:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:08:11,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2020-10-14 05:08:11,321 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 52 [2020-10-14 05:08:11,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:11,321 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2020-10-14 05:08:11,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:08:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2020-10-14 05:08:11,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:08:11,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:11,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:11,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:08:11,323 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash -603975983, now seen corresponding path program 1 times [2020-10-14 05:08:11,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:11,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [527868470] [2020-10-14 05:08:11,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:11,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:11,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:13,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:14,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:14,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:14,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:08:16,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 05:08:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 05:08:16,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:08:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-14 05:08:16,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:08:16,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:16,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:16,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:08:16,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:16,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:08:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:16,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:16,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:08:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:16,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:16,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:16,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:08:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:16,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:16,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:16,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:08:16,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:16,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:08:16,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:17,073 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-14 05:08:17,295 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-14 05:08:17,462 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 05:08:17,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:08:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:17,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:08:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:17,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:08:17,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [527868470] [2020-10-14 05:08:17,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:08:17,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:08:17,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614823568] [2020-10-14 05:08:17,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:08:17,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:08:17,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:08:17,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:08:17,487 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand 13 states. [2020-10-14 05:08:17,893 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-14 05:08:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:08:18,051 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-14 05:08:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:08:18,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-14 05:08:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:08:18,053 INFO L225 Difference]: With dead ends: 52 [2020-10-14 05:08:18,053 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 05:08:18,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:08:18,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 05:08:18,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-14 05:08:18,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 05:08:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-14 05:08:18,065 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 54 [2020-10-14 05:08:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:08:18,066 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-14 05:08:18,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:08:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-14 05:08:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:08:18,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:08:18,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:08:18,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:08:18,068 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:08:18,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:08:18,068 INFO L82 PathProgramCache]: Analyzing trace with hash -603974309, now seen corresponding path program 1 times [2020-10-14 05:08:18,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:08:18,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782259257] [2020-10-14 05:08:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:08:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:19,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:08:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:08:19,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:08:19,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:08:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:19,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:19,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:19,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:08:19,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:19,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:08:19,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:19,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:08:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:08:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:19,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:08:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:20,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 05:08:20,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:20,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:08:20,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:08:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:20,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:20,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:08:20,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:20,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:20,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:08:20,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:20,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:08:20,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:20,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:08:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:08:20,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:08:20,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:20,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:08:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:08:20,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:08:20,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:08:20,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:08:20,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:08:20,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 05:08:20,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:08:20,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:08:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:08:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:08:20,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:08:20,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:08:21,570 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-10-14 05:08:21,854 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 45 [2020-10-14 05:08:22,225 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 57 [2020-10-14 05:08:23,568 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 114