/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:07:08,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:07:08,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:07:08,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:07:08,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:07:08,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:07:08,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:07:08,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:07:08,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:07:08,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:07:08,061 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:07:08,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:07:08,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:07:08,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:07:08,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:07:08,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:07:08,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:07:08,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:07:08,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:07:08,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:07:08,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:07:08,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:07:08,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:07:08,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:07:08,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:07:08,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:07:08,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:07:08,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:07:08,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:07:08,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:07:08,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:07:08,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:07:08,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:07:08,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:07:08,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:07:08,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:07:08,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:07:08,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:07:08,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:07:08,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:07:08,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:07:08,095 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 [2020-09-25 00:07:08,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:07:08,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:07:08,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:07:08,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:07:08,161 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:07:08,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:07:08,161 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:07:08,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:07:08,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:07:08,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:07:08,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:07:08,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:07:08,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:07:08,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:07:08,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:07:08,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:07:08,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:07:08,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:07:08,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:07:08,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:07:08,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:07:08,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:07:08,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:07:08,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:07:08,167 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:07:08,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:07:08,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:07:08,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:07:08,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:07:08,689 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:07:08,690 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-25 00:07:08,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/135bfe56c/1975603680304e2f898241a4d940de7f/FLAGd968a07b1 [2020-09-25 00:07:09,393 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:07:09,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-25 00:07:09,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/135bfe56c/1975603680304e2f898241a4d940de7f/FLAGd968a07b1 [2020-09-25 00:07:09,689 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/135bfe56c/1975603680304e2f898241a4d940de7f [2020-09-25 00:07:09,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:07:09,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:07:09,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:09,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:07:09,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:07:09,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:09" (1/1) ... [2020-09-25 00:07:09,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e33fb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:09, skipping insertion in model container [2020-09-25 00:07:09,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:07:09" (1/1) ... [2020-09-25 00:07:09,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:07:09,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:07:10,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:10,262 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:07:10,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:07:10,383 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:07:10,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10 WrapperNode [2020-09-25 00:07:10,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:07:10,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:07:10,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:07:10,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:07:10,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (1/1) ... [2020-09-25 00:07:10,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:07:10,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:07:10,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:07:10,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:07:10,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (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 [2020-09-25 00:07:10,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:07:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:07:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:07:10,553 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2020-09-25 00:07:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2020-09-25 00:07:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2020-09-25 00:07:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2020-09-25 00:07:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2020-09-25 00:07:10,554 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2020-09-25 00:07:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2020-09-25 00:07:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2020-09-25 00:07:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-09-25 00:07:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2020-09-25 00:07:10,555 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2020-09-25 00:07:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2020-09-25 00:07:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2020-09-25 00:07:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2020-09-25 00:07:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-25 00:07:10,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:07:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-09-25 00:07:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:07:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:07:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 00:07:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-25 00:07:10,558 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2020-09-25 00:07:10,559 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2020-09-25 00:07:10,560 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-25 00:07:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2020-09-25 00:07:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2020-09-25 00:07:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2020-09-25 00:07:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2020-09-25 00:07:10,561 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2020-09-25 00:07:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-25 00:07:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:07:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:07:10,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:07:11,816 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:07:11,817 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 00:07:11,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:11 BoogieIcfgContainer [2020-09-25 00:07:11,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:07:11,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:07:11,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:07:11,836 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:07:11,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:07:09" (1/3) ... [2020-09-25 00:07:11,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5355c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:11, skipping insertion in model container [2020-09-25 00:07:11,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:07:10" (2/3) ... [2020-09-25 00:07:11,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5355c2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:07:11, skipping insertion in model container [2020-09-25 00:07:11,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:07:11" (3/3) ... [2020-09-25 00:07:11,843 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.1.ufo.UNBOUNDED.pals.c [2020-09-25 00:07:11,860 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:07:11,871 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:07:11,895 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:07:11,933 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:07:11,933 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:07:11,933 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:07:11,933 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:07:11,934 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:07:11,934 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:07:11,934 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:07:11,934 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:07:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states. [2020-09-25 00:07:11,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 00:07:11,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:11,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:11,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:11,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:11,998 INFO L82 PathProgramCache]: Analyzing trace with hash -182402980, now seen corresponding path program 1 times [2020-09-25 00:07:12,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:12,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976444394] [2020-09-25 00:07:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:12,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:13,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-09-25 00:07:16,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:07:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4324 [2020-09-25 00:07:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:16,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:07:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 00:07:16,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:07:16,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:07:17,084 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-25 00:07:17,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:07:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 00:07:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:17,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 00:07:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:17,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:07:17,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:17,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:17,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 00:07:17,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 00:07:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:17,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 00:07:17,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:07:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:07:17,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:07:17,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-09-25 00:07:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:07:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 00:07:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 00:07:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:07:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:07:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:17,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-25 00:07:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:17,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:07:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 00:07:17,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:07:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:17,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:17,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-25 00:07:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:07:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 00:07:17,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:07:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:17,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:17,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:17,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:17,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:07:17,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:17,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:17,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:17,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976444394] [2020-09-25 00:07:17,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:17,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 00:07:17,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422734777] [2020-09-25 00:07:17,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:07:17,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:17,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:07:17,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:07:17,953 INFO L87 Difference]: Start difference. First operand 574 states. Second operand 14 states. [2020-09-25 00:07:18,809 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-25 00:07:19,149 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-25 00:07:19,338 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-25 00:07:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:23,380 INFO L93 Difference]: Finished difference Result 1019 states and 1270 transitions. [2020-09-25 00:07:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 00:07:23,383 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 228 [2020-09-25 00:07:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:23,403 INFO L225 Difference]: With dead ends: 1019 [2020-09-25 00:07:23,403 INFO L226 Difference]: Without dead ends: 550 [2020-09-25 00:07:23,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2020-09-25 00:07:23,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-09-25 00:07:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 550. [2020-09-25 00:07:23,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 550 states. [2020-09-25 00:07:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 643 transitions. [2020-09-25 00:07:23,551 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 643 transitions. Word has length 228 [2020-09-25 00:07:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:23,554 INFO L479 AbstractCegarLoop]: Abstraction has 550 states and 643 transitions. [2020-09-25 00:07:23,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:07:23,554 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 643 transitions. [2020-09-25 00:07:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 00:07:23,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:23,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:23,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:07:23,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:23,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:23,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1513791060, now seen corresponding path program 1 times [2020-09-25 00:07:23,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:23,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835300330] [2020-09-25 00:07:23,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-09-25 00:07:24,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 00:07:24,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:07:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 256 [2020-09-25 00:07:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 00:07:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:07:24,512 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-25 00:07:24,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:07:24,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 00:07:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 00:07:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:07:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:07:24,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 00:07:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:24,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:07:24,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 00:07:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:07:24,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:07:24,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:07:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:24,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:07:24,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 00:07:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:24,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:07:24,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:24,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:24,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-25 00:07:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:07:24,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:24,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:24,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:07:24,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:07:25,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835300330] [2020-09-25 00:07:25,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:25,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 00:07:25,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986356880] [2020-09-25 00:07:25,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:07:25,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:25,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:07:25,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:07:25,023 INFO L87 Difference]: Start difference. First operand 550 states and 643 transitions. Second operand 11 states. [2020-09-25 00:07:27,004 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-09-25 00:07:27,171 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-09-25 00:07:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:28,770 INFO L93 Difference]: Finished difference Result 976 states and 1167 transitions. [2020-09-25 00:07:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:07:28,771 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 239 [2020-09-25 00:07:28,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:28,778 INFO L225 Difference]: With dead ends: 976 [2020-09-25 00:07:28,778 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 00:07:28,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2020-09-25 00:07:28,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 00:07:28,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2020-09-25 00:07:28,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2020-09-25 00:07:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 647 transitions. [2020-09-25 00:07:28,828 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 647 transitions. Word has length 239 [2020-09-25 00:07:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:28,830 INFO L479 AbstractCegarLoop]: Abstraction has 555 states and 647 transitions. [2020-09-25 00:07:28,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:07:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 647 transitions. [2020-09-25 00:07:28,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-25 00:07:28,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:28,835 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:28,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:07:28,836 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:28,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:28,836 INFO L82 PathProgramCache]: Analyzing trace with hash 960210052, now seen corresponding path program 1 times [2020-09-25 00:07:28,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:28,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91711983] [2020-09-25 00:07:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:28,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:29,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-09-25 00:07:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:07:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4562 [2020-09-25 00:07:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:07:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 00:07:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-09-25 00:07:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:33,715 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-25 00:07:33,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:07:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 00:07:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:07:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:33,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 00:07:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:33,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:07:33,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:33,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 00:07:33,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:33,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:33,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:07:33,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:33,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 00:07:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:33,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:33,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:33,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:07:33,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:33,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:07:33,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:33,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 00:07:33,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:07:33,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:33,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 00:07:33,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:33,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:33,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:07:33,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:07:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:33,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:33,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:33,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:33,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:07:33,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:33,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 00:07:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:34,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 00:07:34,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:07:34,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:34,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:34,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:34,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:34,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-25 00:07:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:34,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 00:07:34,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:07:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:34,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-25 00:07:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:07:34,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 00:07:34,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:07:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:07:34,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 00:07:34,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:07:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:07:34,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:07:34,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:07:34,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:34,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:07:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:34,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:07:34,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:34,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:07:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:34,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-09-25 00:07:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:34,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:34,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:34,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:34,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:34,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:07:34,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:07:34,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:34,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:07:34,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91711983] [2020-09-25 00:07:34,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:34,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 00:07:34,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794284928] [2020-09-25 00:07:34,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:07:34,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:07:34,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:07:34,700 INFO L87 Difference]: Start difference. First operand 555 states and 647 transitions. Second operand 17 states. [2020-09-25 00:07:35,415 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-25 00:07:37,602 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 139 [2020-09-25 00:07:37,746 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-25 00:07:37,879 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 00:07:38,651 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-25 00:07:40,906 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-09-25 00:07:41,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:41,530 INFO L93 Difference]: Finished difference Result 1181 states and 1390 transitions. [2020-09-25 00:07:41,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 00:07:41,530 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 312 [2020-09-25 00:07:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:41,540 INFO L225 Difference]: With dead ends: 1181 [2020-09-25 00:07:41,540 INFO L226 Difference]: Without dead ends: 755 [2020-09-25 00:07:41,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=597, Invalid=1755, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 00:07:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2020-09-25 00:07:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 747. [2020-09-25 00:07:41,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-09-25 00:07:41,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 864 transitions. [2020-09-25 00:07:41,595 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 864 transitions. Word has length 312 [2020-09-25 00:07:41,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:41,596 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 864 transitions. [2020-09-25 00:07:41,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:07:41,597 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 864 transitions. [2020-09-25 00:07:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-25 00:07:41,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:41,602 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:41,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:07:41,603 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:41,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1614602927, now seen corresponding path program 1 times [2020-09-25 00:07:41,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:41,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254497037] [2020-09-25 00:07:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:42,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-09-25 00:07:46,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:07:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-09-25 00:07:46,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-09-25 00:07:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:46,989 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-09-25 00:07:46,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:07:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 00:07:47,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 00:07:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:07:47,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-25 00:07:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 00:07:47,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:07:47,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:07:47,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-09-25 00:07:47,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:47,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:07:47,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:07:47,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-25 00:07:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:07:47,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 00:07:47,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 00:07:47,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:07:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:47,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:07:47,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:47,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:47,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 00:07:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:07:47,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:47,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:47,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:47,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:47,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-25 00:07:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 00:07:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 00:07:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:07:47,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:47,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 00:07:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:07:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-25 00:07:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 00:07:47,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 00:07:47,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:07:47,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 00:07:47,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 00:07:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 00:07:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:07:47,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:07:47,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:07:47,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 00:07:47,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:07:47,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:07:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:07:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:07:47,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:07:47,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:07:47,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-09-25 00:07:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:47,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:47,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:07:47,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:07:47,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:07:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:07:47,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:07:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:07:47,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:07:47,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:07:47,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:07:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:07:48,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254497037] [2020-09-25 00:07:48,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:07:48,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-25 00:07:48,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702662326] [2020-09-25 00:07:48,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:07:48,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:07:48,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:07:48,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:07:48,115 INFO L87 Difference]: Start difference. First operand 747 states and 864 transitions. Second operand 16 states. [2020-09-25 00:07:48,264 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 00:07:49,123 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-09-25 00:07:49,803 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-09-25 00:07:51,523 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-09-25 00:07:54,425 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 00:07:54,554 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 00:07:54,685 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-25 00:07:55,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:07:55,557 INFO L93 Difference]: Finished difference Result 1204 states and 1422 transitions. [2020-09-25 00:07:55,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-25 00:07:55,558 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 313 [2020-09-25 00:07:55,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:07:55,562 INFO L225 Difference]: With dead ends: 1204 [2020-09-25 00:07:55,562 INFO L226 Difference]: Without dead ends: 771 [2020-09-25 00:07:55,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=692, Invalid=1960, Unknown=0, NotChecked=0, Total=2652 [2020-09-25 00:07:55,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2020-09-25 00:07:55,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 765. [2020-09-25 00:07:55,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-09-25 00:07:55,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 884 transitions. [2020-09-25 00:07:55,616 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 884 transitions. Word has length 313 [2020-09-25 00:07:55,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:07:55,617 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 884 transitions. [2020-09-25 00:07:55,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:07:55,618 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 884 transitions. [2020-09-25 00:07:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-09-25 00:07:55,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:07:55,624 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:07:55,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:07:55,625 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:07:55,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:07:55,626 INFO L82 PathProgramCache]: Analyzing trace with hash -334289294, now seen corresponding path program 1 times [2020-09-25 00:07:55,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:07:55,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891493958] [2020-09-25 00:07:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:07:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:07:55,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:07:56,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking...