/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:45:03,070 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:45:03,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:45:03,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:45:03,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:45:03,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:45:03,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:45:03,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:45:03,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:45:03,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:45:03,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:45:03,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:45:03,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:45:03,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:45:03,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:45:03,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:45:03,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:45:03,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:45:03,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:45:03,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:45:03,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:45:03,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:45:03,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:45:03,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:45:03,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:45:03,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:45:03,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:45:03,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:45:03,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:45:03,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:45:03,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:45:03,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:45:03,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:45:03,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:45:03,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:45:03,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:45:03,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:45:03,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:45:03,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:45:03,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:45:03,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:45:03,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:45:03,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:45:03,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:45:03,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:45:03,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:45:03,216 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:45:03,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:45:03,216 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:45:03,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:45:03,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:45:03,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:45:03,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:45:03,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:45:03,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:45:03,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:45:03,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:45:03,218 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:45:03,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:45:03,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:45:03,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:45:03,219 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:45:03,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:45:03,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:45:03,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:45:03,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:45:03,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:45:03,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:45:03,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:45:03,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:45:03,221 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:45:03,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:45:03,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:45:03,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:45:03,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:45:03,754 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:45:03,756 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:45:03,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 22:45:03,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536395f8c/a8f872169e714a9a9b74111eacb6ae97/FLAG1d56250f6 [2020-09-24 22:45:04,493 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:45:04,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-24 22:45:04,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536395f8c/a8f872169e714a9a9b74111eacb6ae97/FLAG1d56250f6 [2020-09-24 22:45:04,750 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/536395f8c/a8f872169e714a9a9b74111eacb6ae97 [2020-09-24 22:45:04,763 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:45:04,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:45:04,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:04,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:45:04,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:45:04,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:04" (1/1) ... [2020-09-24 22:45:04,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:04, skipping insertion in model container [2020-09-24 22:45:04,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:04" (1/1) ... [2020-09-24 22:45:04,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:45:04,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:45:05,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:05,464 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:45:05,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:05,615 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:45:05,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05 WrapperNode [2020-09-24 22:45:05,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:05,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:45:05,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:45:05,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:45:05,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... [2020-09-24 22:45:05,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:45:05,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:45:05,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:45:05,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:45:05,699 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:45:05,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:45:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:45:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 22:45:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 22:45:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 22:45:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-24 22:45:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 22:45:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 22:45:05,796 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-24 22:45:05,796 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-24 22:45:05,797 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:45:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:45:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 22:45:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 22:45:05,797 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:45:05,798 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:45:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:45:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:45:05,799 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:45:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:45:05,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:45:05,801 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:45:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:45:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:45:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:45:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:45:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:45:05,805 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:45:05,806 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:45:05,807 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:45:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:45:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:45:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:45:05,808 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:45:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:45:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:45:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:45:05,809 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:45:05,810 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:45:05,811 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:45:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:45:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:45:05,813 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:45:05,814 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:45:05,815 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:45:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:45:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:45:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:45:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:45:05,816 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:45:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:45:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:45:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:45:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:45:05,817 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:45:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:45:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:45:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:45:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:45:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:45:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:45:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:45:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 22:45:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-24 22:45:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:45:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:45:05,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-24 22:45:05,826 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:45:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-24 22:45:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:45:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:45:05,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:45:06,296 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 22:45:06,467 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:45:06,468 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 22:45:06,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:06 BoogieIcfgContainer [2020-09-24 22:45:06,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:45:06,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:45:06,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:45:06,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:45:06,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:45:04" (1/3) ... [2020-09-24 22:45:06,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:06, skipping insertion in model container [2020-09-24 22:45:06,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:05" (2/3) ... [2020-09-24 22:45:06,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64ba169b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:06, skipping insertion in model container [2020-09-24 22:45:06,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:06" (3/3) ... [2020-09-24 22:45:06,484 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-24 22:45:06,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:45:06,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:45:06,529 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:45:06,562 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:45:06,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:45:06,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:45:06,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:45:06,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:45:06,563 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:45:06,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:45:06,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:45:06,588 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-24 22:45:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 22:45:06,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:06,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:06,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:06,607 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-24 22:45:06,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:06,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358456136] [2020-09-24 22:45:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:06,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:45:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:45:07,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 926 [2020-09-24 22:45:07,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:07,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:45:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:45:07,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:07,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:07,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:45:07,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:07,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:07,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:07,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:45:07,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 22:45:07,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:45:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:07,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:45:07,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:07,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:07,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:07,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 22:45:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:07,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358456136] [2020-09-24 22:45:07,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:07,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:07,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279184189] [2020-09-24 22:45:07,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:07,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:07,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:07,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:07,925 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-09-24 22:45:08,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:08,326 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-09-24 22:45:08,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:45:08,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-24 22:45:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:08,346 INFO L225 Difference]: With dead ends: 230 [2020-09-24 22:45:08,346 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 22:45:08,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:45:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 22:45:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-09-24 22:45:08,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 22:45:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-09-24 22:45:08,425 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-09-24 22:45:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:08,426 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-09-24 22:45:08,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-09-24 22:45:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 22:45:08,429 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:08,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:08,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:45:08,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-09-24 22:45:08,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:08,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [963222507] [2020-09-24 22:45:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:08,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:09,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:45:09,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:09,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1444 [2020-09-24 22:45:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:09,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:45:09,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:09,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:09,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:09,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:09,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:09,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:09,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:09,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:09,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:09,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:09,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:09,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:09,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:09,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:09,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:09,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:09,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:09,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:09,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:45:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:10,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:10,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:45:10,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:10,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:10,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:45:10,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:10,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:10,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [963222507] [2020-09-24 22:45:10,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:10,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:45:10,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945955161] [2020-09-24 22:45:10,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:10,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:10,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:10,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:10,024 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 7 states. [2020-09-24 22:45:10,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:10,670 INFO L93 Difference]: Finished difference Result 174 states and 190 transitions. [2020-09-24 22:45:10,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:10,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-24 22:45:10,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:10,673 INFO L225 Difference]: With dead ends: 174 [2020-09-24 22:45:10,673 INFO L226 Difference]: Without dead ends: 144 [2020-09-24 22:45:10,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:10,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-24 22:45:10,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-24 22:45:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:45:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-24 22:45:10,696 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-24 22:45:10,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:10,696 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-24 22:45:10,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:10,697 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-24 22:45:10,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:45:10,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:10,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:10,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:45:10,699 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:10,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:10,700 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-24 22:45:10,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:10,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385629909] [2020-09-24 22:45:10,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:10,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 22:45:15,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:45:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:45:15,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:45:15,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:45:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:15,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:45:15,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:15,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 22:45:15,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:45:15,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:45:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:15,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:45:15,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:45:15,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:15,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-24 22:45:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:45:15,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:15,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:45:15,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:16,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:16,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385629909] [2020-09-24 22:45:16,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:16,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:45:16,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569443282] [2020-09-24 22:45:16,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:16,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:16,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:16,007 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-24 22:45:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:16,457 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-09-24 22:45:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:16,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 22:45:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:16,459 INFO L225 Difference]: With dead ends: 147 [2020-09-24 22:45:16,460 INFO L226 Difference]: Without dead ends: 93 [2020-09-24 22:45:16,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:45:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-24 22:45:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-09-24 22:45:16,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 22:45:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-24 22:45:16,477 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-09-24 22:45:16,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:16,477 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-24 22:45:16,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:16,478 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-24 22:45:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:45:16,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:16,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:16,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:45:16,483 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:16,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:16,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-09-24 22:45:16,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:16,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059859011] [2020-09-24 22:45:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:16,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 22:45:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:45:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 22:45:21,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-24 22:45:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:45:21,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-24 22:45:21,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:21,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:45:21,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:45:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:21,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:21,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:45:21,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:21,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:45:21,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:21,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-24 22:45:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:22,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:45:22,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:22,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:22,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:45:22,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 22:45:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 22:45:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:45:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:45:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:45:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:22,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059859011] [2020-09-24 22:45:22,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:22,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:45:22,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028756331] [2020-09-24 22:45:22,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:45:22,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:22,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:45:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:22,112 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 13 states. [2020-09-24 22:45:22,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:22,821 INFO L93 Difference]: Finished difference Result 182 states and 196 transitions. [2020-09-24 22:45:22,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:22,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-09-24 22:45:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:22,823 INFO L225 Difference]: With dead ends: 182 [2020-09-24 22:45:22,824 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 22:45:22,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-09-24 22:45:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 22:45:22,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 104. [2020-09-24 22:45:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-24 22:45:22,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 111 transitions. [2020-09-24 22:45:22,847 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 111 transitions. Word has length 69 [2020-09-24 22:45:22,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:22,849 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 111 transitions. [2020-09-24 22:45:22,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:45:22,849 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 111 transitions. [2020-09-24 22:45:22,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 22:45:22,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:22,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:22,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:45:22,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:22,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:22,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1586882603, now seen corresponding path program 1 times [2020-09-24 22:45:22,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:22,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670316886] [2020-09-24 22:45:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 22:45:28,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:45:28,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5468 [2020-09-24 22:45:28,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:28,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-24 22:45:28,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:28,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:28,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:28,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:45:28,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 22:45:28,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:28,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:45:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:28,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:45:28,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:28,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:28,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:28,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:45:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:45:28,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:28,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 22:45:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:28,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:45:28,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:28,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:45:28,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 22:45:28,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:28,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:45:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:45:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:45:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:28,804 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 22:45:28,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670316886] [2020-09-24 22:45:28,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:28,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:45:28,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004061308] [2020-09-24 22:45:28,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:45:28,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:28,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:45:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:45:28,810 INFO L87 Difference]: Start difference. First operand 104 states and 111 transitions. Second operand 12 states. [2020-09-24 22:45:29,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:29,581 INFO L93 Difference]: Finished difference Result 163 states and 176 transitions. [2020-09-24 22:45:29,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:45:29,581 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-09-24 22:45:29,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:29,583 INFO L225 Difference]: With dead ends: 163 [2020-09-24 22:45:29,584 INFO L226 Difference]: Without dead ends: 127 [2020-09-24 22:45:29,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:45:29,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-24 22:45:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-09-24 22:45:29,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-24 22:45:29,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-24 22:45:29,596 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 94 [2020-09-24 22:45:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:29,596 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-24 22:45:29,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:45:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-24 22:45:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 22:45:29,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:29,598 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:29,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:45:29,598 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:29,599 INFO L82 PathProgramCache]: Analyzing trace with hash -892358661, now seen corresponding path program 2 times [2020-09-24 22:45:29,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:29,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1485152818] [2020-09-24 22:45:29,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:29,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:30,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:34,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 22:45:35,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:35,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5949 [2020-09-24 22:45:35,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 22:45:35,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 22:45:35,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:35,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:35,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:35,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:35,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:45:35,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 22:45:35,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:45:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:45:35,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:35,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:45:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:35,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:45:35,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:35,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 22:45:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:35,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 22:45:35,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:45:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 22:45:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:35,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:45:35,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:45:35,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 22:45:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:35,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:35,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:35,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:45:35,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:45:35,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:35,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 22:45:35,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1485152818] [2020-09-24 22:45:35,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:35,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:45:35,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030861018] [2020-09-24 22:45:35,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:35,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:35,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:35,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:35,908 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 10 states. [2020-09-24 22:45:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:36,363 INFO L93 Difference]: Finished difference Result 182 states and 198 transitions. [2020-09-24 22:45:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:45:36,364 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 107 [2020-09-24 22:45:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:36,369 INFO L225 Difference]: With dead ends: 182 [2020-09-24 22:45:36,369 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 22:45:36,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 22:45:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-09-24 22:45:36,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-24 22:45:36,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2020-09-24 22:45:36,395 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 107 [2020-09-24 22:45:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:36,395 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2020-09-24 22:45:36,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2020-09-24 22:45:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-24 22:45:36,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:36,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:36,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:45:36,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:36,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 1 times [2020-09-24 22:45:36,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:36,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968717273] [2020-09-24 22:45:36,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 22:45:41,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:41,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:45:41,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:41,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-24 22:45:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:45:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-24 22:45:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:41,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:41,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:42,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:42,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:45:42,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:42,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-24 22:45:42,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 22:45:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:42,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 22:45:42,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:42,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-24 22:45:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:43,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 22:45:43,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:43,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 22:45:43,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:43,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:45:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:43,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:45:43,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 22:45:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:43,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:45:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 22:45:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 22:45:43,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-24 22:45:43,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:45:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:43,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 22:45:43,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 22:45:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:44,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:45:44,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 22:45:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 22:45:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 22:45:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:44,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 22:45:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:44,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:44,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:44,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 22:45:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:45:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:45:44,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968717273] [2020-09-24 22:45:44,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:44,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-24 22:45:44,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729494594] [2020-09-24 22:45:44,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-24 22:45:44,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:44,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-24 22:45:44,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1549, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 22:45:44,770 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand 41 states.