/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 03:35:09,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 03:35:09,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 03:35:09,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 03:35:09,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 03:35:09,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 03:35:09,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 03:35:09,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 03:35:09,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 03:35:09,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 03:35:09,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 03:35:09,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 03:35:09,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 03:35:09,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 03:35:09,484 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 03:35:09,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 03:35:09,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 03:35:09,487 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 03:35:09,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 03:35:09,498 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 03:35:09,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 03:35:09,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 03:35:09,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 03:35:09,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 03:35:09,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 03:35:09,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 03:35:09,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 03:35:09,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 03:35:09,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 03:35:09,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 03:35:09,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 03:35:09,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 03:35:09,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 03:35:09,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 03:35:09,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 03:35:09,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 03:35:09,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 03:35:09,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 03:35:09,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 03:35:09,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 03:35:09,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 03:35:09,518 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 [2020-10-15 03:35:09,560 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 03:35:09,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 03:35:09,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 03:35:09,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 03:35:09,562 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 03:35:09,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 03:35:09,563 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 03:35:09,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 03:35:09,563 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 03:35:09,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 03:35:09,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 03:35:09,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 03:35:09,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 03:35:09,565 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 03:35:09,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 03:35:09,565 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 03:35:09,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 03:35:09,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 03:35:09,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 03:35:09,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 03:35:09,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 03:35:09,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 03:35:09,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 03:35:09,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 03:35:09,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 03:35:09,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 03:35:09,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 03:35:09,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 03:35:09,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 03:35:09,568 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 03:35:09,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 03:35:09,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 03:35:09,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 03:35:09,859 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 03:35:09,859 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 03:35:09,860 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:35:09,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4528c87/313a7349827d4fc29eefc9d4a81f13ed/FLAG8a2d414ec [2020-10-15 03:35:10,428 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 03:35:10,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:35:10,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4528c87/313a7349827d4fc29eefc9d4a81f13ed/FLAG8a2d414ec [2020-10-15 03:35:10,772 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4528c87/313a7349827d4fc29eefc9d4a81f13ed [2020-10-15 03:35:10,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 03:35:10,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 03:35:10,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 03:35:10,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 03:35:10,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 03:35:10,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:35:10" (1/1) ... [2020-10-15 03:35:10,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c6b7cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:10, skipping insertion in model container [2020-10-15 03:35:10,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:35:10" (1/1) ... [2020-10-15 03:35:10,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 03:35:10,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 03:35:11,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:35:11,331 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 03:35:11,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 03:35:11,468 INFO L208 MainTranslator]: Completed translation [2020-10-15 03:35:11,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11 WrapperNode [2020-10-15 03:35:11,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 03:35:11,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 03:35:11,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 03:35:11,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 03:35:11,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,540 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (1/1) ... [2020-10-15 03:35:11,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 03:35:11,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 03:35:11,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 03:35:11,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 03:35:11,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (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 [2020-10-15 03:35:11,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 03:35:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 03:35:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 03:35:11,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 03:35:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 03:35:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 03:35:11,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 03:35:11,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 03:35:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 03:35:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 03:35:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 03:35:11,651 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 03:35:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 03:35:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 03:35:11,652 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 03:35:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 03:35:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-15 03:35:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-15 03:35:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-15 03:35:11,655 INFO L130 BoogieDeclarations]: Found specification of procedure node7 [2020-10-15 03:35:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 03:35:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 03:35:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 03:35:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 03:35:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 03:35:12,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 03:35:12,720 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 03:35:12,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:35:12 BoogieIcfgContainer [2020-10-15 03:35:12,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 03:35:12,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 03:35:12,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 03:35:12,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 03:35:12,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:35:10" (1/3) ... [2020-10-15 03:35:12,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:35:12, skipping insertion in model container [2020-10-15 03:35:12,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:35:11" (2/3) ... [2020-10-15 03:35:12,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ffef8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:35:12, skipping insertion in model container [2020-10-15 03:35:12,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:35:12" (3/3) ... [2020-10-15 03:35:12,734 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-15 03:35:12,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 03:35:12,753 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 03:35:12,767 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 03:35:12,793 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 03:35:12,794 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 03:35:12,794 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 03:35:12,794 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 03:35:12,795 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 03:35:12,795 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 03:35:12,795 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 03:35:12,795 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 03:35:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states. [2020-10-15 03:35:12,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-15 03:35:12,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:12,832 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] [2020-10-15 03:35:12,833 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:12,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:12,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1355773301, now seen corresponding path program 1 times [2020-10-15 03:35:12,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:12,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472770160] [2020-10-15 03:35:12,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:13,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:13,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:15,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:17,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:18,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-15 03:35:18,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-15 03:35:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:18,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:35:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 03:35:18,793 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:18,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:18,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:18,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:18,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:18,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 03:35:18,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:18,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:18,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:18,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:18,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472770160] [2020-10-15 03:35:18,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:18,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:18,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951771578] [2020-10-15 03:35:18,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:18,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:18,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:18,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:18,959 INFO L87 Difference]: Start difference. First operand 206 states. Second operand 10 states. [2020-10-15 03:35:19,369 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 03:35:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:22,552 INFO L93 Difference]: Finished difference Result 1453 states and 2341 transitions. [2020-10-15 03:35:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:22,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 111 [2020-10-15 03:35:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:22,588 INFO L225 Difference]: With dead ends: 1453 [2020-10-15 03:35:22,589 INFO L226 Difference]: Without dead ends: 1336 [2020-10-15 03:35:22,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-10-15 03:35:22,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 307. [2020-10-15 03:35:22,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-10-15 03:35:22,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 442 transitions. [2020-10-15 03:35:22,711 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 442 transitions. Word has length 111 [2020-10-15 03:35:22,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:22,712 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 442 transitions. [2020-10-15 03:35:22,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:22,713 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 442 transitions. [2020-10-15 03:35:22,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:35:22,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:22,724 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] [2020-10-15 03:35:22,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 03:35:22,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:22,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1905103645, now seen corresponding path program 1 times [2020-10-15 03:35:22,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:22,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738496926] [2020-10-15 03:35:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:22,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:23,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:27,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:27,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:35:27,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:27,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:35:27,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:27,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:35:27,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-15 03:35:27,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:28,149 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:28,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:28,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:35:28,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:28,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:28,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738496926] [2020-10-15 03:35:28,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:28,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:28,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183092195] [2020-10-15 03:35:28,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:28,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:28,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:28,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:28,236 INFO L87 Difference]: Start difference. First operand 307 states and 442 transitions. Second operand 10 states. [2020-10-15 03:35:28,544 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:30,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:30,605 INFO L93 Difference]: Finished difference Result 1944 states and 3038 transitions. [2020-10-15 03:35:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:30,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-15 03:35:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:30,616 INFO L225 Difference]: With dead ends: 1944 [2020-10-15 03:35:30,616 INFO L226 Difference]: Without dead ends: 1784 [2020-10-15 03:35:30,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-10-15 03:35:30,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 561. [2020-10-15 03:35:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-15 03:35:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 847 transitions. [2020-10-15 03:35:30,670 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 847 transitions. Word has length 113 [2020-10-15 03:35:30,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:30,671 INFO L479 AbstractCegarLoop]: Abstraction has 561 states and 847 transitions. [2020-10-15 03:35:30,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 847 transitions. [2020-10-15 03:35:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:35:30,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:30,673 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] [2020-10-15 03:35:30,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 03:35:30,673 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:30,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1050050765, now seen corresponding path program 1 times [2020-10-15 03:35:30,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:30,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897990320] [2020-10-15 03:35:30,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:33,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:33,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:35,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:35,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:35:35,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:35,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:35:35,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:35,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:35,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:35:35,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:36,099 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:36,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:36,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:36,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:36,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:35:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:36,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:36,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897990320] [2020-10-15 03:35:36,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:36,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:36,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833333409] [2020-10-15 03:35:36,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:36,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:36,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:36,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:36,191 INFO L87 Difference]: Start difference. First operand 561 states and 847 transitions. Second operand 10 states. [2020-10-15 03:35:36,567 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:38,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:38,366 INFO L93 Difference]: Finished difference Result 2383 states and 3729 transitions. [2020-10-15 03:35:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:38,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-15 03:35:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:38,380 INFO L225 Difference]: With dead ends: 2383 [2020-10-15 03:35:38,380 INFO L226 Difference]: Without dead ends: 2148 [2020-10-15 03:35:38,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:38,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2020-10-15 03:35:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 814. [2020-10-15 03:35:38,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2020-10-15 03:35:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1251 transitions. [2020-10-15 03:35:38,457 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1251 transitions. Word has length 113 [2020-10-15 03:35:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:38,458 INFO L479 AbstractCegarLoop]: Abstraction has 814 states and 1251 transitions. [2020-10-15 03:35:38,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1251 transitions. [2020-10-15 03:35:38,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:35:38,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:38,460 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] [2020-10-15 03:35:38,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 03:35:38,461 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:38,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:38,461 INFO L82 PathProgramCache]: Analyzing trace with hash 861464844, now seen corresponding path program 1 times [2020-10-15 03:35:38,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:38,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419153368] [2020-10-15 03:35:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:38,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:40,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:41,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:43,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:35:43,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:43,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:35:43,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:43,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:43,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:43,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:35:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:43,853 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:43,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:43,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:43,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:43,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:35:43,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:43,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:43,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:43,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:43,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419153368] [2020-10-15 03:35:43,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:43,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:43,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760867530] [2020-10-15 03:35:43,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:43,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:43,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:43,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:43,923 INFO L87 Difference]: Start difference. First operand 814 states and 1251 transitions. Second operand 10 states. [2020-10-15 03:35:44,204 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:45,877 INFO L93 Difference]: Finished difference Result 2585 states and 4050 transitions. [2020-10-15 03:35:45,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:45,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-15 03:35:45,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:45,898 INFO L225 Difference]: With dead ends: 2585 [2020-10-15 03:35:45,898 INFO L226 Difference]: Without dead ends: 2350 [2020-10-15 03:35:45,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-10-15 03:35:46,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 983. [2020-10-15 03:35:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 983 states. [2020-10-15 03:35:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1521 transitions. [2020-10-15 03:35:46,035 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1521 transitions. Word has length 113 [2020-10-15 03:35:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:46,036 INFO L479 AbstractCegarLoop]: Abstraction has 983 states and 1521 transitions. [2020-10-15 03:35:46,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1521 transitions. [2020-10-15 03:35:46,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:35:46,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:46,038 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] [2020-10-15 03:35:46,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 03:35:46,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 52066166, now seen corresponding path program 1 times [2020-10-15 03:35:46,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:46,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1860268844] [2020-10-15 03:35:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:46,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:51,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:35:51,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:51,352 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:51,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 03:35:51,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:51,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:51,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:51,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:51,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1860268844] [2020-10-15 03:35:51,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:51,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:51,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370799257] [2020-10-15 03:35:51,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:51,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:51,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:51,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:51,418 INFO L87 Difference]: Start difference. First operand 983 states and 1521 transitions. Second operand 10 states. [2020-10-15 03:35:51,711 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:35:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:35:52,964 INFO L93 Difference]: Finished difference Result 2762 states and 4331 transitions. [2020-10-15 03:35:52,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:35:52,965 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-15 03:35:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:35:52,977 INFO L225 Difference]: With dead ends: 2762 [2020-10-15 03:35:52,977 INFO L226 Difference]: Without dead ends: 2527 [2020-10-15 03:35:52,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:35:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2527 states. [2020-10-15 03:35:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2527 to 1142. [2020-10-15 03:35:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-15 03:35:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1775 transitions. [2020-10-15 03:35:53,090 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1775 transitions. Word has length 113 [2020-10-15 03:35:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:35:53,090 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1775 transitions. [2020-10-15 03:35:53,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:35:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1775 transitions. [2020-10-15 03:35:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:35:53,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:35:53,092 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] [2020-10-15 03:35:53,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 03:35:53,092 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:35:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:35:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1531264135, now seen corresponding path program 1 times [2020-10-15 03:35:53,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:35:53,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976852311] [2020-10-15 03:35:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:35:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:53,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:54,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:54,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:58,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:35:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:35:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-15 03:35:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:35:58,516 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:35:58,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:35:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:35:58,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:35:58,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:35:58,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:35:58,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:35:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:35:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:35:58,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:35:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:35:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:35:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:35:58,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976852311] [2020-10-15 03:35:58,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:35:58,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:35:58,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813700559] [2020-10-15 03:35:58,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:35:58,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:35:58,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:35:58,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:35:58,592 INFO L87 Difference]: Start difference. First operand 1142 states and 1775 transitions. Second operand 10 states. [2020-10-15 03:35:58,958 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 03:36:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:00,528 INFO L93 Difference]: Finished difference Result 3556 states and 5606 transitions. [2020-10-15 03:36:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:36:00,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-10-15 03:36:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:00,541 INFO L225 Difference]: With dead ends: 3556 [2020-10-15 03:36:00,541 INFO L226 Difference]: Without dead ends: 2610 [2020-10-15 03:36:00,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:36:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2020-10-15 03:36:00,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 1142. [2020-10-15 03:36:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1142 states. [2020-10-15 03:36:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1769 transitions. [2020-10-15 03:36:00,671 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1769 transitions. Word has length 113 [2020-10-15 03:36:00,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:00,672 INFO L479 AbstractCegarLoop]: Abstraction has 1142 states and 1769 transitions. [2020-10-15 03:36:00,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:36:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1769 transitions. [2020-10-15 03:36:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-15 03:36:00,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:00,673 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] [2020-10-15 03:36:00,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 03:36:00,674 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:00,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1774388486, now seen corresponding path program 1 times [2020-10-15 03:36:00,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:00,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478054229] [2020-10-15 03:36:00,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:00,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:05,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-15 03:36:05,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:05,976 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:05,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:06,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:06,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478054229] [2020-10-15 03:36:06,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:06,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:06,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430717888] [2020-10-15 03:36:06,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:06,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:06,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:06,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:06,014 INFO L87 Difference]: Start difference. First operand 1142 states and 1769 transitions. Second operand 6 states. [2020-10-15 03:36:06,246 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-15 03:36:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:07,319 INFO L93 Difference]: Finished difference Result 3233 states and 5076 transitions. [2020-10-15 03:36:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:07,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-10-15 03:36:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:07,328 INFO L225 Difference]: With dead ends: 3233 [2020-10-15 03:36:07,328 INFO L226 Difference]: Without dead ends: 2151 [2020-10-15 03:36:07,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2020-10-15 03:36:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2149. [2020-10-15 03:36:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2149 states. [2020-10-15 03:36:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3354 transitions. [2020-10-15 03:36:07,516 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3354 transitions. Word has length 113 [2020-10-15 03:36:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:07,516 INFO L479 AbstractCegarLoop]: Abstraction has 2149 states and 3354 transitions. [2020-10-15 03:36:07,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3354 transitions. [2020-10-15 03:36:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-15 03:36:07,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:07,518 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] [2020-10-15 03:36:07,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 03:36:07,519 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:07,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash -428177257, now seen corresponding path program 1 times [2020-10-15 03:36:07,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:07,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [830345879] [2020-10-15 03:36:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:08,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:12,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-15 03:36:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:36:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:12,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-15 03:36:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:12,769 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:12,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:12,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:12,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:12,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [830345879] [2020-10-15 03:36:12,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:12,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:12,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801338220] [2020-10-15 03:36:12,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:12,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:12,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:12,814 INFO L87 Difference]: Start difference. First operand 2149 states and 3354 transitions. Second operand 6 states. [2020-10-15 03:36:13,051 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:13,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:13,959 INFO L93 Difference]: Finished difference Result 4226 states and 6633 transitions. [2020-10-15 03:36:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:13,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2020-10-15 03:36:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:13,969 INFO L225 Difference]: With dead ends: 4226 [2020-10-15 03:36:13,969 INFO L226 Difference]: Without dead ends: 2149 [2020-10-15 03:36:13,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:13,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-10-15 03:36:14,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 2149. [2020-10-15 03:36:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2149 states. [2020-10-15 03:36:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3329 transitions. [2020-10-15 03:36:14,210 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3329 transitions. Word has length 114 [2020-10-15 03:36:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:14,212 INFO L479 AbstractCegarLoop]: Abstraction has 2149 states and 3329 transitions. [2020-10-15 03:36:14,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:14,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3329 transitions. [2020-10-15 03:36:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-15 03:36:14,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:14,215 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] [2020-10-15 03:36:14,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 03:36:14,215 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:14,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1220178199, now seen corresponding path program 1 times [2020-10-15 03:36:14,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:14,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686257428] [2020-10-15 03:36:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:14,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:14,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 03:36:19,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:19,489 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:19,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:19,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:19,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:19,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:19,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:19,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686257428] [2020-10-15 03:36:19,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:19,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:19,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149115091] [2020-10-15 03:36:19,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:19,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:19,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:19,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:19,532 INFO L87 Difference]: Start difference. First operand 2149 states and 3329 transitions. Second operand 6 states. [2020-10-15 03:36:19,753 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:36:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:21,166 INFO L93 Difference]: Finished difference Result 6132 states and 9565 transitions. [2020-10-15 03:36:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:21,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2020-10-15 03:36:21,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:21,185 INFO L225 Difference]: With dead ends: 6132 [2020-10-15 03:36:21,185 INFO L226 Difference]: Without dead ends: 4059 [2020-10-15 03:36:21,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:21,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4059 states. [2020-10-15 03:36:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4059 to 4057. [2020-10-15 03:36:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-10-15 03:36:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6289 transitions. [2020-10-15 03:36:21,648 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6289 transitions. Word has length 115 [2020-10-15 03:36:21,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:21,649 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 6289 transitions. [2020-10-15 03:36:21,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:21,649 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6289 transitions. [2020-10-15 03:36:21,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-15 03:36:21,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:21,652 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] [2020-10-15 03:36:21,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 03:36:21,653 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:21,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:21,653 INFO L82 PathProgramCache]: Analyzing trace with hash 635618888, now seen corresponding path program 1 times [2020-10-15 03:36:21,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:21,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797948086] [2020-10-15 03:36:21,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:21,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:21,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:24,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:26,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:26,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 03:36:26,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:36:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 03:36:26,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-15 03:36:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:26,912 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:26,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:26,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:26,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:26,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:26,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:26,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797948086] [2020-10-15 03:36:26,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:26,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:26,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284626410] [2020-10-15 03:36:26,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:26,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:26,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:26,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:26,964 INFO L87 Difference]: Start difference. First operand 4057 states and 6289 transitions. Second operand 6 states. [2020-10-15 03:36:27,217 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:28,372 INFO L93 Difference]: Finished difference Result 8034 states and 12495 transitions. [2020-10-15 03:36:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:28,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2020-10-15 03:36:28,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:28,390 INFO L225 Difference]: With dead ends: 8034 [2020-10-15 03:36:28,390 INFO L226 Difference]: Without dead ends: 4057 [2020-10-15 03:36:28,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:28,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2020-10-15 03:36:28,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 4057. [2020-10-15 03:36:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-10-15 03:36:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6240 transitions. [2020-10-15 03:36:28,789 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6240 transitions. Word has length 116 [2020-10-15 03:36:28,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:28,789 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 6240 transitions. [2020-10-15 03:36:28,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:28,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6240 transitions. [2020-10-15 03:36:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-15 03:36:28,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:28,792 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] [2020-10-15 03:36:28,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 03:36:28,792 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:28,793 INFO L82 PathProgramCache]: Analyzing trace with hash 420025720, now seen corresponding path program 1 times [2020-10-15 03:36:28,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:28,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588120713] [2020-10-15 03:36:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:33,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:33,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 03:36:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-15 03:36:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:34,063 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:34,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 03:36:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:34,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 03:36:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:34,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588120713] [2020-10-15 03:36:34,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:34,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:36:34,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14249285] [2020-10-15 03:36:34,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:34,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:34,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:34,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:34,122 INFO L87 Difference]: Start difference. First operand 4057 states and 6240 transitions. Second operand 6 states. [2020-10-15 03:36:34,375 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-15 03:36:35,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:35,498 INFO L93 Difference]: Finished difference Result 8030 states and 12393 transitions. [2020-10-15 03:36:35,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:36:35,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2020-10-15 03:36:35,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:35,510 INFO L225 Difference]: With dead ends: 8030 [2020-10-15 03:36:35,510 INFO L226 Difference]: Without dead ends: 4057 [2020-10-15 03:36:35,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4057 states. [2020-10-15 03:36:35,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4057 to 4057. [2020-10-15 03:36:35,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-10-15 03:36:35,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6191 transitions. [2020-10-15 03:36:35,931 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6191 transitions. Word has length 117 [2020-10-15 03:36:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:35,932 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 6191 transitions. [2020-10-15 03:36:35,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:36:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6191 transitions. [2020-10-15 03:36:35,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-15 03:36:35,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:35,935 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] [2020-10-15 03:36:35,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 03:36:35,935 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash 760055673, now seen corresponding path program 1 times [2020-10-15 03:36:35,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:35,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854834625] [2020-10-15 03:36:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:35,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:39,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:40,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:40,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-15 03:36:40,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 03:36:40,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 03:36:40,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:40,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 03:36:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:40,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-15 03:36:40,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 03:36:41,451 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:41,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854834625] [2020-10-15 03:36:41,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:41,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 03:36:41,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026336060] [2020-10-15 03:36:41,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 03:36:41,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:41,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 03:36:41,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 03:36:41,514 INFO L87 Difference]: Start difference. First operand 4057 states and 6191 transitions. Second operand 8 states. [2020-10-15 03:36:41,788 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-15 03:36:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:44,110 INFO L93 Difference]: Finished difference Result 11617 states and 17811 transitions. [2020-10-15 03:36:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 03:36:44,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 118 [2020-10-15 03:36:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:44,127 INFO L225 Difference]: With dead ends: 11617 [2020-10-15 03:36:44,127 INFO L226 Difference]: Without dead ends: 7787 [2020-10-15 03:36:44,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 03:36:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7787 states. [2020-10-15 03:36:44,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7787 to 4057. [2020-10-15 03:36:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-10-15 03:36:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6190 transitions. [2020-10-15 03:36:44,667 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6190 transitions. Word has length 118 [2020-10-15 03:36:44,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:44,668 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 6190 transitions. [2020-10-15 03:36:44,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 03:36:44,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6190 transitions. [2020-10-15 03:36:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:36:44,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:44,671 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] [2020-10-15 03:36:44,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 03:36:44,671 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:44,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:44,672 INFO L82 PathProgramCache]: Analyzing trace with hash 507034991, now seen corresponding path program 1 times [2020-10-15 03:36:44,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:44,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522353310] [2020-10-15 03:36:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:45,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:46,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:46,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:48,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:49,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:49,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:36:49,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 03:36:49,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-15 03:36:49,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:50,099 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:50,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:50,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 03:36:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:50,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:50,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522353310] [2020-10-15 03:36:50,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:50,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:36:50,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287738186] [2020-10-15 03:36:50,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:36:50,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:50,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:36:50,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:36:50,150 INFO L87 Difference]: Start difference. First operand 4057 states and 6190 transitions. Second operand 9 states. [2020-10-15 03:36:50,403 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:36:53,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:36:53,305 INFO L93 Difference]: Finished difference Result 9915 states and 15160 transitions. [2020-10-15 03:36:53,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:36:53,306 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-10-15 03:36:53,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:36:53,318 INFO L225 Difference]: With dead ends: 9915 [2020-10-15 03:36:53,319 INFO L226 Difference]: Without dead ends: 5983 [2020-10-15 03:36:53,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:36:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2020-10-15 03:36:54,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 4057. [2020-10-15 03:36:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4057 states. [2020-10-15 03:36:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6187 transitions. [2020-10-15 03:36:54,108 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6187 transitions. Word has length 119 [2020-10-15 03:36:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:36:54,108 INFO L479 AbstractCegarLoop]: Abstraction has 4057 states and 6187 transitions. [2020-10-15 03:36:54,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:36:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6187 transitions. [2020-10-15 03:36:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-15 03:36:54,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:36:54,110 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] [2020-10-15 03:36:54,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 03:36:54,110 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:36:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:36:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1732672535, now seen corresponding path program 1 times [2020-10-15 03:36:54,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:36:54,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843265739] [2020-10-15 03:36:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:36:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:59,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-15 03:36:59,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 03:36:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 03:36:59,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:59,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:36:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 03:36:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 03:36:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:59,361 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:36:59,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:36:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:36:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:36:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:36:59,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:36:59,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:36:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:36:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:36:59,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843265739] [2020-10-15 03:36:59,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:36:59,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:36:59,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621451765] [2020-10-15 03:36:59,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:36:59,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:36:59,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:36:59,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:36:59,393 INFO L87 Difference]: Start difference. First operand 4057 states and 6187 transitions. Second operand 6 states. [2020-10-15 03:36:59,622 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 03:37:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:01,157 INFO L93 Difference]: Finished difference Result 7404 states and 11310 transitions. [2020-10-15 03:37:01,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:01,157 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2020-10-15 03:37:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:01,173 INFO L225 Difference]: With dead ends: 7404 [2020-10-15 03:37:01,173 INFO L226 Difference]: Without dead ends: 6482 [2020-10-15 03:37:01,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6482 states. [2020-10-15 03:37:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6482 to 5666. [2020-10-15 03:37:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5666 states. [2020-10-15 03:37:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5666 states to 5666 states and 8683 transitions. [2020-10-15 03:37:02,235 INFO L78 Accepts]: Start accepts. Automaton has 5666 states and 8683 transitions. Word has length 119 [2020-10-15 03:37:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:02,236 INFO L479 AbstractCegarLoop]: Abstraction has 5666 states and 8683 transitions. [2020-10-15 03:37:02,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5666 states and 8683 transitions. [2020-10-15 03:37:02,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:02,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:02,238 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] [2020-10-15 03:37:02,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 03:37:02,239 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:02,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1374786769, now seen corresponding path program 1 times [2020-10-15 03:37:02,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:02,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771681294] [2020-10-15 03:37:02,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:02,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:02,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:04,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:07,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:07,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:37:07,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:07,544 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:37:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:07,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:07,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:07,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:07,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:07,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:07,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771681294] [2020-10-15 03:37:07,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:07,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 03:37:07,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278890107] [2020-10-15 03:37:07,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 03:37:07,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:07,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 03:37:07,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 03:37:07,599 INFO L87 Difference]: Start difference. First operand 5666 states and 8683 transitions. Second operand 5 states. [2020-10-15 03:37:07,860 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-15 03:37:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:09,960 INFO L93 Difference]: Finished difference Result 14430 states and 22129 transitions. [2020-10-15 03:37:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:09,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-15 03:37:09,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:09,977 INFO L225 Difference]: With dead ends: 14430 [2020-10-15 03:37:09,977 INFO L226 Difference]: Without dead ends: 9140 [2020-10-15 03:37:09,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 03:37:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9140 states. [2020-10-15 03:37:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9140 to 9090. [2020-10-15 03:37:11,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9090 states. [2020-10-15 03:37:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 13813 transitions. [2020-10-15 03:37:11,560 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 13813 transitions. Word has length 120 [2020-10-15 03:37:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:11,561 INFO L479 AbstractCegarLoop]: Abstraction has 9090 states and 13813 transitions. [2020-10-15 03:37:11,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 03:37:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 13813 transitions. [2020-10-15 03:37:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:11,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:11,563 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] [2020-10-15 03:37:11,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 03:37:11,563 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:11,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash -226450703, now seen corresponding path program 1 times [2020-10-15 03:37:11,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:11,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962340637] [2020-10-15 03:37:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:11,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:11,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:13,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:16,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 03:37:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:37:16,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:16,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:37:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-15 03:37:16,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:17,008 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:37:17,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:17,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:17,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:17,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:17,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:17,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:17,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962340637] [2020-10-15 03:37:17,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:17,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:37:17,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579247391] [2020-10-15 03:37:17,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:37:17,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:17,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:37:17,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:17,050 INFO L87 Difference]: Start difference. First operand 9090 states and 13813 transitions. Second operand 9 states. [2020-10-15 03:37:17,323 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 03:37:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:21,724 INFO L93 Difference]: Finished difference Result 26975 states and 40950 transitions. [2020-10-15 03:37:21,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 03:37:21,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 120 [2020-10-15 03:37:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:21,744 INFO L225 Difference]: With dead ends: 26975 [2020-10-15 03:37:21,744 INFO L226 Difference]: Without dead ends: 18193 [2020-10-15 03:37:21,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2020-10-15 03:37:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18193 states. [2020-10-15 03:37:23,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18193 to 9090. [2020-10-15 03:37:23,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9090 states. [2020-10-15 03:37:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 13802 transitions. [2020-10-15 03:37:23,453 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 13802 transitions. Word has length 120 [2020-10-15 03:37:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:23,454 INFO L479 AbstractCegarLoop]: Abstraction has 9090 states and 13802 transitions. [2020-10-15 03:37:23,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 03:37:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 13802 transitions. [2020-10-15 03:37:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-15 03:37:23,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:23,456 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] [2020-10-15 03:37:23,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 03:37:23,456 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:23,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1187441790, now seen corresponding path program 1 times [2020-10-15 03:37:23,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:23,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101231213] [2020-10-15 03:37:23,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:23,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 03:37:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-15 03:37:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:28,722 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:37:28,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:28,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:28,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:28,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:28,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:28,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:28,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101231213] [2020-10-15 03:37:28,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:28,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:37:28,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113291695] [2020-10-15 03:37:28,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:28,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:28,756 INFO L87 Difference]: Start difference. First operand 9090 states and 13802 transitions. Second operand 6 states. [2020-10-15 03:37:29,000 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-15 03:37:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:32,312 INFO L93 Difference]: Finished difference Result 13962 states and 21159 transitions. [2020-10-15 03:37:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 03:37:32,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-15 03:37:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:32,324 INFO L225 Difference]: With dead ends: 13962 [2020-10-15 03:37:32,325 INFO L226 Difference]: Without dead ends: 11596 [2020-10-15 03:37:32,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:37:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11596 states. [2020-10-15 03:37:34,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11596 to 10010. [2020-10-15 03:37:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10010 states. [2020-10-15 03:37:34,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10010 states to 10010 states and 15216 transitions. [2020-10-15 03:37:34,106 INFO L78 Accepts]: Start accepts. Automaton has 10010 states and 15216 transitions. Word has length 120 [2020-10-15 03:37:34,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:34,107 INFO L479 AbstractCegarLoop]: Abstraction has 10010 states and 15216 transitions. [2020-10-15 03:37:34,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:34,107 INFO L276 IsEmpty]: Start isEmpty. Operand 10010 states and 15216 transitions. [2020-10-15 03:37:34,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:37:34,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:34,109 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] [2020-10-15 03:37:34,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 03:37:34,110 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2084216213, now seen corresponding path program 1 times [2020-10-15 03:37:34,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:34,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796346578] [2020-10-15 03:37:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:36,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:37,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:39,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 03:37:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 03:37:39,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 03:37:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:39,369 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:37:39,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:37:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:39,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:39,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:37:39,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:37:39,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:37:39,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:37:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:37:39,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796346578] [2020-10-15 03:37:39,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:37:39,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 03:37:39,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111132435] [2020-10-15 03:37:39,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 03:37:39,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:37:39,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 03:37:39,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 03:37:39,399 INFO L87 Difference]: Start difference. First operand 10010 states and 15216 transitions. Second operand 6 states. [2020-10-15 03:37:39,616 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-15 03:37:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:37:50,769 INFO L93 Difference]: Finished difference Result 62252 states and 94818 transitions. [2020-10-15 03:37:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 03:37:50,769 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-15 03:37:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:37:50,820 INFO L225 Difference]: With dead ends: 62252 [2020-10-15 03:37:50,820 INFO L226 Difference]: Without dead ends: 52527 [2020-10-15 03:37:50,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 03:37:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52527 states. [2020-10-15 03:37:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52527 to 39430. [2020-10-15 03:37:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39430 states. [2020-10-15 03:37:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39430 states to 39430 states and 59875 transitions. [2020-10-15 03:37:58,879 INFO L78 Accepts]: Start accepts. Automaton has 39430 states and 59875 transitions. Word has length 121 [2020-10-15 03:37:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:37:58,880 INFO L479 AbstractCegarLoop]: Abstraction has 39430 states and 59875 transitions. [2020-10-15 03:37:58,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 03:37:58,880 INFO L276 IsEmpty]: Start isEmpty. Operand 39430 states and 59875 transitions. [2020-10-15 03:37:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:37:58,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:37:58,885 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] [2020-10-15 03:37:58,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 03:37:58,886 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:37:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:37:58,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2081310021, now seen corresponding path program 1 times [2020-10-15 03:37:58,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:37:58,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428919378] [2020-10-15 03:37:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:37:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:37:58,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:59,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:37:59,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:03,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:03,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:38:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 03:38:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:04,191 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:38:04,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:04,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428919378] [2020-10-15 03:38:04,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:04,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 03:38:04,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561571060] [2020-10-15 03:38:04,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 03:38:04,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:04,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 03:38:04,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 03:38:04,233 INFO L87 Difference]: Start difference. First operand 39430 states and 59875 transitions. Second operand 10 states. [2020-10-15 03:38:04,507 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 03:38:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 03:38:27,580 INFO L93 Difference]: Finished difference Result 119661 states and 181420 transitions. [2020-10-15 03:38:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 03:38:27,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 121 [2020-10-15 03:38:27,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 03:38:27,690 INFO L225 Difference]: With dead ends: 119661 [2020-10-15 03:38:27,690 INFO L226 Difference]: Without dead ends: 106615 [2020-10-15 03:38:27,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 03:38:27,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106615 states. [2020-10-15 03:38:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106615 to 45442. [2020-10-15 03:38:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45442 states. [2020-10-15 03:38:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45442 states to 45442 states and 69015 transitions. [2020-10-15 03:38:38,033 INFO L78 Accepts]: Start accepts. Automaton has 45442 states and 69015 transitions. Word has length 121 [2020-10-15 03:38:38,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 03:38:38,033 INFO L479 AbstractCegarLoop]: Abstraction has 45442 states and 69015 transitions. [2020-10-15 03:38:38,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 03:38:38,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45442 states and 69015 transitions. [2020-10-15 03:38:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-15 03:38:38,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 03:38:38,037 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] [2020-10-15 03:38:38,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 03:38:38,037 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 03:38:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 03:38:38,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1441451828, now seen corresponding path program 1 times [2020-10-15 03:38:38,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 03:38:38,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [302197874] [2020-10-15 03:38:38,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 03:38:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:38,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:43,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:43,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-15 03:38:43,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:43,471 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-15 03:38:43,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 03:38:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 03:38:43,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 03:38:43,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 03:38:43,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 03:38:43,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 03:38:43,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 03:38:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 03:38:43,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [302197874] [2020-10-15 03:38:43,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 03:38:43,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 03:38:43,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536248257] [2020-10-15 03:38:43,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 03:38:43,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 03:38:43,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 03:38:43,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-15 03:38:43,526 INFO L87 Difference]: Start difference. First operand 45442 states and 69015 transitions. Second operand 9 states. [2020-10-15 03:38:43,900 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 183