/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:42:25,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:42:25,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:42:25,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:42:25,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:42:25,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:42:25,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:42:25,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:42:25,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:42:25,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:42:25,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:42:25,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:42:25,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:42:25,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:42:25,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:42:25,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:42:25,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:42:25,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:42:25,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:42:25,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:42:25,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:42:25,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:42:25,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:42:25,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:42:25,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:42:25,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:42:25,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:42:25,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:42:25,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:42:25,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:42:25,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:42:25,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:42:25,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:42:25,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:42:25,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:42:25,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:42:25,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:42:25,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:42:25,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:42:25,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:42:25,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:42:25,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:42:25,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:42:25,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:42:25,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:42:25,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:42:25,569 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:42:25,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:42:25,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:42:25,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:42:25,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:42:25,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:42:25,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:42:25,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:42:25,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:42:25,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:42:25,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:42:25,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:42:25,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:42:25,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:42:25,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:42:25,573 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:42:25,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:42:25,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:42:25,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:42:25,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:42:25,894 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:42:25,895 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-13 13:42:25,961 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a83f6475/c5547c27a9fa4a2daa8ed49935cd4763/FLAG6c7106ec8 [2020-10-13 13:42:26,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:42:26,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-13 13:42:26,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a83f6475/c5547c27a9fa4a2daa8ed49935cd4763/FLAG6c7106ec8 [2020-10-13 13:42:26,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a83f6475/c5547c27a9fa4a2daa8ed49935cd4763 [2020-10-13 13:42:26,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:42:26,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:42:26,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:42:26,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:42:26,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:42:26,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:42:26" (1/1) ... [2020-10-13 13:42:26,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:26, skipping insertion in model container [2020-10-13 13:42:26,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:42:26" (1/1) ... [2020-10-13 13:42:26,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:42:26,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:42:27,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:42:27,482 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:42:27,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:42:27,712 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:42:27,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27 WrapperNode [2020-10-13 13:42:27,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:42:27,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:42:27,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:42:27,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:42:27,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... [2020-10-13 13:42:27,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:42:27,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:42:27,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:42:27,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:42:27,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:42:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:42:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:42:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:42:27,994 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-13 13:42:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-13 13:42:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-13 13:42:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2020-10-13 13:42:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2020-10-13 13:42:27,995 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-13 13:42:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-13 13:42:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:42:27,996 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-13 13:42:27,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:42:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:42:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:42:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:42:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:42:27,997 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:42:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:42:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:42:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:42:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:42:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:42:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:42:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-13 13:42:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:42:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:42:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:42:28,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:42:30,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:42:30,568 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 13:42:30,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:42:30 BoogieIcfgContainer [2020-10-13 13:42:30,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:42:30,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:42:30,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:42:30,584 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:42:30,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:42:26" (1/3) ... [2020-10-13 13:42:30,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5afdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:42:30, skipping insertion in model container [2020-10-13 13:42:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:42:27" (2/3) ... [2020-10-13 13:42:30,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39a5afdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:42:30, skipping insertion in model container [2020-10-13 13:42:30,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:42:30" (3/3) ... [2020-10-13 13:42:30,588 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.3.ufo.BOUNDED-10.pals.c [2020-10-13 13:42:30,599 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:42:30,608 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:42:30,623 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:42:30,652 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:42:30,652 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:42:30,652 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:42:30,652 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:42:30,653 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:42:30,653 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:42:30,653 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:42:30,653 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:42:30,690 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states. [2020-10-13 13:42:30,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:42:30,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:42:30,729 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] [2020-10-13 13:42:30,729 INFO L427 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:42:30,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:42:30,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1964386708, now seen corresponding path program 1 times [2020-10-13 13:42:30,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:42:30,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356844513] [2020-10-13 13:42:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:42:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:31,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:32,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:42:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-13 13:42:32,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-13 13:42:32,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:32,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 13:42:33,482 WARN L193 SmtUtils]: Spent 916.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:42:33,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:42:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:33,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:33,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:42:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:33,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:42:33,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:33,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:33,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:42:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:33,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:42:33,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:33,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 13:42:33,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:33,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:33,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:42:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:33,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:33,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:42:33,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:42:33,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:42:33,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:33,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:33,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:42:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:33,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:33,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:42:33,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:33,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:33,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:33,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:42:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:33,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:33,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:33,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:33,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:33,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:42:33,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:33,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:34,109 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-13 13:42:34,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:42:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:34,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:34,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:34,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:34,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:34,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:42:34,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:34,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:42:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:34,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:34,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:34,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:34,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:42:34,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:34,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:34,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:34,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:42:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:34,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:34,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:34,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:34,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:42:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:34,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:42:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:34,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:34,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:34,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:42:34,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:34,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:42:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:34,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:42:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:42:34,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356844513] [2020-10-13 13:42:34,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:42:34,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 13:42:34,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145829740] [2020-10-13 13:42:34,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 13:42:34,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:42:34,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 13:42:34,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-13 13:42:34,396 INFO L87 Difference]: Start difference. First operand 773 states. Second operand 8 states. [2020-10-13 13:42:37,313 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:38,000 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:38,692 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:39,359 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:40,102 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:42:41,105 INFO L93 Difference]: Finished difference Result 1051 states and 1855 transitions. [2020-10-13 13:42:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 13:42:41,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2020-10-13 13:42:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:42:41,133 INFO L225 Difference]: With dead ends: 1051 [2020-10-13 13:42:41,133 INFO L226 Difference]: Without dead ends: 833 [2020-10-13 13:42:41,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-13 13:42:41,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2020-10-13 13:42:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 768. [2020-10-13 13:42:41,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-13 13:42:41,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1387 transitions. [2020-10-13 13:42:41,378 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1387 transitions. Word has length 187 [2020-10-13 13:42:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:42:41,379 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 1387 transitions. [2020-10-13 13:42:41,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 13:42:41,380 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1387 transitions. [2020-10-13 13:42:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-13 13:42:41,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:42:41,386 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] [2020-10-13 13:42:41,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:42:41,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:42:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:42:41,388 INFO L82 PathProgramCache]: Analyzing trace with hash -792240558, now seen corresponding path program 1 times [2020-10-13 13:42:41,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:42:41,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296635438] [2020-10-13 13:42:41,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:42:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:44,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:44,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-13 13:42:44,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:44,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-10-13 13:42:44,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 13:42:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-13 13:42:44,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 13:42:44,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:45,359 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:42:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:42:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:45,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:45,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:45,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:42:45,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:45,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:42:45,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:45,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:45,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:42:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-13 13:42:46,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-13 13:42:46,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:42:46,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-13 13:42:46,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:42:46,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 13:42:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:42:46,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:42:46,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:42:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 13:42:46,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:42:46,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 13:42:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:42:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 13:42:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:46,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:42:46,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:46,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 13:42:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:46,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:42:46,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:46,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 13:42:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:46,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:42:46,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:46,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 13:42:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:42:46,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:42:46,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:42:46,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 13:42:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:42:46,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:42:46,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:42:46,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:42:46,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:42:46,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:42:46,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:42:46,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:42:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:42:46,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:42:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:42:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:42:46,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296635438] [2020-10-13 13:42:46,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:42:46,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 13:42:46,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169958447] [2020-10-13 13:42:46,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 13:42:46,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:42:46,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 13:42:46,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:42:46,677 INFO L87 Difference]: Start difference. First operand 768 states and 1387 transitions. Second operand 14 states. [2020-10-13 13:42:54,996 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:42:55,731 WARN L193 SmtUtils]: Spent 649.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:42:56,629 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 381 [2020-10-13 13:42:57,311 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 385 [2020-10-13 13:42:58,443 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:59,166 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:42:59,985 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:00,819 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:01,631 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:03,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:03,011 INFO L93 Difference]: Finished difference Result 1055 states and 1861 transitions. [2020-10-13 13:43:03,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 13:43:03,012 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 187 [2020-10-13 13:43:03,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:03,020 INFO L225 Difference]: With dead ends: 1055 [2020-10-13 13:43:03,020 INFO L226 Difference]: Without dead ends: 844 [2020-10-13 13:43:03,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2020-10-13 13:43:03,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-10-13 13:43:03,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 768. [2020-10-13 13:43:03,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 768 states. [2020-10-13 13:43:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 1322 transitions. [2020-10-13 13:43:03,149 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 1322 transitions. Word has length 187 [2020-10-13 13:43:03,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:03,150 INFO L479 AbstractCegarLoop]: Abstraction has 768 states and 1322 transitions. [2020-10-13 13:43:03,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 13:43:03,150 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 1322 transitions. [2020-10-13 13:43:03,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 13:43:03,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:03,156 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:03,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:43:03,156 INFO L427 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 791940016, now seen corresponding path program 1 times [2020-10-13 13:43:03,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:03,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487163407] [2020-10-13 13:43:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:03,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:03,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:04,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:08,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:08,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-13 13:43:08,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:43:08,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 13:43:08,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-13 13:43:08,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:43:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:09,052 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 13:43:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:43:09,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-10-13 13:43:09,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 13:43:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:43:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:09,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:43:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 13:43:09,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:09,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:43:09,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-13 13:43:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:09,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:43:09,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:09,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:09,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:09,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-10-13 13:43:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:09,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:09,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-13 13:43:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:09,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:09,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:09,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:09,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:43:09,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:09,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:10,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-10-13 13:43:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:10,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:10,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:43:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:43:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:10,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:10,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:10,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:10,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:10,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:10,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:10,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:10,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:10,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487163407] [2020-10-13 13:43:10,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:10,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:43:10,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679774949] [2020-10-13 13:43:10,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:43:10,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:10,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:43:10,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:43:10,213 INFO L87 Difference]: Start difference. First operand 768 states and 1322 transitions. Second operand 11 states. [2020-10-13 13:43:10,908 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:16,673 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:17,108 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:17,564 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:17,783 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:18,567 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:18,823 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:19,695 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:20,059 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:20,843 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:21,088 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:22,672 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:23,197 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:23,511 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:23,556 INFO L93 Difference]: Finished difference Result 1305 states and 2212 transitions. [2020-10-13 13:43:23,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:43:23,557 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 251 [2020-10-13 13:43:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:23,566 INFO L225 Difference]: With dead ends: 1305 [2020-10-13 13:43:23,566 INFO L226 Difference]: Without dead ends: 1100 [2020-10-13 13:43:23,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:43:23,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-13 13:43:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 962. [2020-10-13 13:43:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-10-13 13:43:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1635 transitions. [2020-10-13 13:43:23,692 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1635 transitions. Word has length 251 [2020-10-13 13:43:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:23,693 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1635 transitions. [2020-10-13 13:43:23,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:43:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1635 transitions. [2020-10-13 13:43:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-13 13:43:23,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:23,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:23,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:43:23,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:23,701 INFO L82 PathProgramCache]: Analyzing trace with hash -740083496, now seen corresponding path program 1 times [2020-10-13 13:43:23,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:23,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431046125] [2020-10-13 13:43:23,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:23,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:24,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:24,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:28,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:28,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-13 13:43:28,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:43:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-13 13:43:28,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 152 [2020-10-13 13:43:28,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-13 13:43:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,560 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:29,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:43:29,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:29,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:29,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:29,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:29,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:29,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:43:29,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:29,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 13:43:29,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:29,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-13 13:43:29,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:43:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:30,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:30,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:30,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:30,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:43:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:30,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:43:30,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:30,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:30,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:30,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:30,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:43:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:30,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:43:30,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:30,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:43:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:30,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-10-13 13:43:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:30,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:43:30,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:30,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:30,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:30,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-13 13:43:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:30,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:43:30,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:30,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:30,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:30,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-13 13:43:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:30,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:43:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:30,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-13 13:43:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:30,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:30,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:30,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:30,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:30,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:30,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:30,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:30,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:30,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431046125] [2020-10-13 13:43:30,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:30,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:43:30,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710557823] [2020-10-13 13:43:30,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:43:30,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:30,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:43:30,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:43:30,668 INFO L87 Difference]: Start difference. First operand 962 states and 1635 transitions. Second operand 11 states. [2020-10-13 13:43:31,716 WARN L193 SmtUtils]: Spent 929.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:37,861 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:38,556 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:39,080 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:39,612 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:39,860 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:40,626 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:40,877 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:41,768 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:42,039 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:43,622 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:43:44,514 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:44,733 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:43:45,035 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:43:45,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:43:45,109 INFO L93 Difference]: Finished difference Result 2006 states and 3349 transitions. [2020-10-13 13:43:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:43:45,109 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 255 [2020-10-13 13:43:45,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:43:45,118 INFO L225 Difference]: With dead ends: 2006 [2020-10-13 13:43:45,119 INFO L226 Difference]: Without dead ends: 1607 [2020-10-13 13:43:45,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:43:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2020-10-13 13:43:45,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1339. [2020-10-13 13:43:45,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1339 states. [2020-10-13 13:43:45,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 2246 transitions. [2020-10-13 13:43:45,267 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 2246 transitions. Word has length 255 [2020-10-13 13:43:45,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:43:45,268 INFO L479 AbstractCegarLoop]: Abstraction has 1339 states and 2246 transitions. [2020-10-13 13:43:45,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:43:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 2246 transitions. [2020-10-13 13:43:45,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-13 13:43:45,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:43:45,274 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:43:45,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:43:45,274 INFO L427 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:43:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:43:45,275 INFO L82 PathProgramCache]: Analyzing trace with hash 226952432, now seen corresponding path program 1 times [2020-10-13 13:43:45,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:43:45,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736955087] [2020-10-13 13:43:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:43:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:45,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:45,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:46,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:50,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:50,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-13 13:43:50,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:43:50,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-13 13:43:50,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:50,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-13 13:43:50,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-13 13:43:50,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,156 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:43:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:43:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:43:51,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:43:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:43:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:43:51,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-13 13:43:51,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:51,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-13 13:43:51,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:43:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:43:51,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:43:51,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:43:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:43:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:51,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:43:51,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:51,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:51,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:43:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:43:51,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:43:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:43:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:43:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:43:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:43:51,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:43:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:51,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:43:51,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:43:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:43:51,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:43:51,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-10-13 13:43:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:43:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-10-13 13:43:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:43:51,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:43:51,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:43:51,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:51,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:51,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 13:43:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:43:51,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:43:51,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:43:51,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:43:51,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:43:51,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:43:51,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:43:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:43:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:43:51,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:43:51,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:43:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:43:52,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736955087] [2020-10-13 13:43:52,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:43:52,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:43:52,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278698254] [2020-10-13 13:43:52,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:43:52,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:43:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:43:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:43:52,076 INFO L87 Difference]: Start difference. First operand 1339 states and 2246 transitions. Second operand 11 states. [2020-10-13 13:43:52,786 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:43:58,562 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:59,248 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:43:59,908 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:00,344 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:00,809 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:01,014 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:01,798 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:02,059 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:03,602 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:04,097 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:05,050 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:05,271 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:05,600 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:44:05,647 INFO L93 Difference]: Finished difference Result 3383 states and 5592 transitions. [2020-10-13 13:44:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:44:05,649 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 259 [2020-10-13 13:44:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:44:05,662 INFO L225 Difference]: With dead ends: 3383 [2020-10-13 13:44:05,662 INFO L226 Difference]: Without dead ends: 2607 [2020-10-13 13:44:05,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:44:05,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2020-10-13 13:44:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2073. [2020-10-13 13:44:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2020-10-13 13:44:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3428 transitions. [2020-10-13 13:44:05,890 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3428 transitions. Word has length 259 [2020-10-13 13:44:05,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:44:05,891 INFO L479 AbstractCegarLoop]: Abstraction has 2073 states and 3428 transitions. [2020-10-13 13:44:05,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:44:05,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3428 transitions. [2020-10-13 13:44:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-13 13:44:05,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:44:05,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:44:05,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:44:05,899 INFO L427 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:44:05,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:44:05,900 INFO L82 PathProgramCache]: Analyzing trace with hash 684508184, now seen corresponding path program 1 times [2020-10-13 13:44:05,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:44:05,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126540486] [2020-10-13 13:44:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:06,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:11,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 154 [2020-10-13 13:44:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 13:44:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:11,739 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:11,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:11,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:11,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:11,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:44:12,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 13:44:12,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:12,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 13:44:12,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:44:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:44:12,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:44:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:44:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:44:12,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:12,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:44:12,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:44:12,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 13:44:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-13 13:44:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-13 13:44:12,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:12,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-13 13:44:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:12,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:44:12,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126540486] [2020-10-13 13:44:12,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:12,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:44:12,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95982179] [2020-10-13 13:44:12,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:44:12,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:12,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:44:12,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:44:12,471 INFO L87 Difference]: Start difference. First operand 2073 states and 3428 transitions. Second operand 11 states. [2020-10-13 13:44:13,129 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:18,975 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:19,633 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:20,181 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:20,724 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:21,126 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:21,529 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:21,739 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:23,075 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:23,536 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:24,001 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:24,919 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:25,138 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:25,456 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:25,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:44:25,505 INFO L93 Difference]: Finished difference Result 6077 states and 9958 transitions. [2020-10-13 13:44:25,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:44:25,511 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2020-10-13 13:44:25,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:44:25,536 INFO L225 Difference]: With dead ends: 6077 [2020-10-13 13:44:25,537 INFO L226 Difference]: Without dead ends: 4567 [2020-10-13 13:44:25,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:44:25,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2020-10-13 13:44:25,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3501. [2020-10-13 13:44:25,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3501 states. [2020-10-13 13:44:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 5712 transitions. [2020-10-13 13:44:25,920 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 5712 transitions. Word has length 263 [2020-10-13 13:44:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:44:25,921 INFO L479 AbstractCegarLoop]: Abstraction has 3501 states and 5712 transitions. [2020-10-13 13:44:25,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:44:25,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 5712 transitions. [2020-10-13 13:44:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 13:44:25,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:44:25,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:44:25,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:44:25,929 INFO L427 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:44:25,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:44:25,930 INFO L82 PathProgramCache]: Analyzing trace with hash 667307056, now seen corresponding path program 1 times [2020-10-13 13:44:25,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:44:25,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253165765] [2020-10-13 13:44:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:26,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:26,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:26,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:26,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-13 13:44:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 13:44:31,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:31,780 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:31,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:31,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:31,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:31,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:31,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:31,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:44:32,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-13 13:44:32,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-13 13:44:32,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:44:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:32,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:44:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:32,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:32,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:32,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:44:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:32,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:44:32,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:32,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:44:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:32,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 13:44:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:44:32,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:44:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 13:44:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 13:44:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-13 13:44:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:32,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:32,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:44:32,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:32,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:44:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 13:44:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:44:32,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253165765] [2020-10-13 13:44:32,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:32,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-13 13:44:32,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335461955] [2020-10-13 13:44:32,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 13:44:32,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 13:44:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 13:44:32,516 INFO L87 Difference]: Start difference. First operand 3501 states and 5712 transitions. Second operand 11 states. [2020-10-13 13:44:33,208 WARN L193 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:39,389 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:40,059 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:40,765 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:41,423 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:44:42,083 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:42,492 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:43,524 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:44,002 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:44,477 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:44,957 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:44:45,892 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:44:46,114 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:44:46,433 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:44:46,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:44:46,489 INFO L93 Difference]: Finished difference Result 11345 states and 18450 transitions. [2020-10-13 13:44:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 13:44:46,495 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 267 [2020-10-13 13:44:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:44:46,531 INFO L225 Difference]: With dead ends: 11345 [2020-10-13 13:44:46,531 INFO L226 Difference]: Without dead ends: 8407 [2020-10-13 13:44:46,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-10-13 13:44:46,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8407 states. [2020-10-13 13:44:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8407 to 6277. [2020-10-13 13:44:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6277 states. [2020-10-13 13:44:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 10120 transitions. [2020-10-13 13:44:47,237 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 10120 transitions. Word has length 267 [2020-10-13 13:44:47,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:44:47,238 INFO L479 AbstractCegarLoop]: Abstraction has 6277 states and 10120 transitions. [2020-10-13 13:44:47,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 13:44:47,238 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 10120 transitions. [2020-10-13 13:44:47,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-13 13:44:47,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:44:47,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:44:47,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:44:47,246 INFO L427 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:44:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:44:47,246 INFO L82 PathProgramCache]: Analyzing trace with hash 788083416, now seen corresponding path program 1 times [2020-10-13 13:44:47,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:44:47,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818922803] [2020-10-13 13:44:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:44:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:47,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:47,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:47,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:48,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 13:44:52,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:44:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:44:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 13:44:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 13:44:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 13:44:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,074 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:44:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:44:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:44:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:44:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:44:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:53,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:44:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:44:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 13:44:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:44:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:44:53,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:44:53,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:44:53,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:44:53,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:44:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:53,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:44:53,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:53,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:44:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:53,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:44:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:53,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:54,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 13:44:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:54,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:54,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:54,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:54,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 13:44:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:44:54,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:44:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:44:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-13 13:44:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:44:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:44:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:44:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 13:44:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:44:54,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:44:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:44:54,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818922803] [2020-10-13 13:44:54,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:44:54,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-10-13 13:44:54,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270120092] [2020-10-13 13:44:54,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 13:44:54,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:44:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 13:44:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-13 13:44:54,265 INFO L87 Difference]: Start difference. First operand 6277 states and 10120 transitions. Second operand 20 states. [2020-10-13 13:44:54,992 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:45:01,670 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification that was a NOOP. DAG size: 372 [2020-10-13 13:45:02,333 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:45:03,026 WARN L193 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 374 [2020-10-13 13:45:03,747 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:45:04,237 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:04,743 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:05,248 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:05,492 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:06,145 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:45:06,548 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:06,920 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:07,169 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:07,398 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:08,221 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:08,644 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:08,886 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:45:09,312 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:09,591 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:09,828 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:10,074 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:11,089 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:11,559 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:11,807 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:45:12,067 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:12,604 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:12,879 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:13,115 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:13,352 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:13,600 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:14,833 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:15,360 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-13 13:45:15,602 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-13 13:45:15,861 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:16,133 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:17,145 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 373 [2020-10-13 13:45:17,822 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 375 [2020-10-13 13:45:18,503 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 376 [2020-10-13 13:45:19,200 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2020-10-13 13:45:19,985 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 379 [2020-10-13 13:45:22,543 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 379 DAG size of output: 377 [2020-10-13 13:45:24,267 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:24,539 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:24,804 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:25,075 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:25,357 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:45:25,613 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-13 13:45:25,977 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:26,246 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:26,522 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:26,802 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:29,133 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:29,471 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-13 13:45:30,099 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:30,381 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:30,665 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:30,956 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:45:31,566 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-13 13:45:31,849 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:32,141 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:32,442 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:33,382 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-13 13:45:35,858 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:36,224 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:36,524 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:37,095 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:37,368 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:37,655 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:45:38,257 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:38,528 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:38,810 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:39,465 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-13 13:45:42,085 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:42,434 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:42,736 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-13 13:45:43,114 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:43,636 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-13 13:45:43,928 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-13 13:45:44,521 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:44,810 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:45,423 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-13 13:45:47,902 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-13 13:45:48,253 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-13 13:45:48,575 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:48,878 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:49,210 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-13 13:45:49,552 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-13 13:45:50,122 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-13 13:45:50,746 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-10-13 13:45:53,885 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-10-13 13:45:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:45:54,720 INFO L93 Difference]: Finished difference Result 57680 states and 94278 transitions. [2020-10-13 13:45:54,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2020-10-13 13:45:54,721 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 271 [2020-10-13 13:45:54,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:45:54,911 INFO L225 Difference]: With dead ends: 57680 [2020-10-13 13:45:54,911 INFO L226 Difference]: Without dead ends: 51966 [2020-10-13 13:45:54,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4601 ImplicationChecksByTransitivity, 29.4s TimeCoverageRelationStatistics Valid=2310, Invalid=10800, Unknown=0, NotChecked=0, Total=13110 [2020-10-13 13:45:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51966 states. [2020-10-13 13:45:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51966 to 38072. [2020-10-13 13:45:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38072 states. [2020-10-13 13:45:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38072 states to 38072 states and 61610 transitions. [2020-10-13 13:45:58,576 INFO L78 Accepts]: Start accepts. Automaton has 38072 states and 61610 transitions. Word has length 271 [2020-10-13 13:45:58,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:45:58,577 INFO L479 AbstractCegarLoop]: Abstraction has 38072 states and 61610 transitions. [2020-10-13 13:45:58,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 13:45:58,577 INFO L276 IsEmpty]: Start isEmpty. Operand 38072 states and 61610 transitions. [2020-10-13 13:45:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-13 13:45:58,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:45:58,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:45:58,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:45:58,596 INFO L427 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:45:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:45:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash 222322594, now seen corresponding path program 1 times [2020-10-13 13:45:58,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:45:58,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902362188] [2020-10-13 13:45:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:45:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:45:58,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:59,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:59,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:45:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:00,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:03,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:46:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-13 13:46:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 13:46:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:04,436 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 370 [2020-10-13 13:46:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:46:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:04,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:04,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:46:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:04,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:46:04,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:04,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 13:46:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:04,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-13 13:46:04,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:04,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-13 13:46:04,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:04,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:46:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:04,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-13 13:46:04,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:04,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-13 13:46:04,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:04,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 13:46:04,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:04,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 13:46:04,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:04,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 13:46:04,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:04,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-13 13:46:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:04,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:04,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:04,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:04,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:04,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 13:46:04,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:04,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:46:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 13:46:04,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 13:46:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:04,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-10-13 13:46:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:46:05,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-13 13:46:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:46:05,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:46:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-13 13:46:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:46:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-10-13 13:46:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:46:05,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 13:46:05,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-10-13 13:46:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:46:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:46:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:46:05,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 13:46:05,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:46:05,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 13:46:05,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:46:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:46:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 13:46:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:46:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:46:05,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:46:05,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902362188] [2020-10-13 13:46:05,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:46:05,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 13:46:05,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735624575] [2020-10-13 13:46:05,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 13:46:05,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:46:05,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 13:46:05,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-13 13:46:05,293 INFO L87 Difference]: Start difference. First operand 38072 states and 61610 transitions. Second operand 12 states. [2020-10-13 13:46:06,000 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 374