/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:50:11,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:50:11,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:50:11,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:50:11,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:50:11,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:50:11,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:50:11,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:50:11,400 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:50:11,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:50:11,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:50:11,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:50:11,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:50:11,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:50:11,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:50:11,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:50:11,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:50:11,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:50:11,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:50:11,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:50:11,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:50:11,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:50:11,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:50:11,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:50:11,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:50:11,445 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:50:11,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:50:11,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:50:11,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:50:11,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:50:11,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:50:11,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:50:11,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:50:11,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:50:11,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:50:11,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:50:11,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:50:11,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:50:11,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:50:11,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:50:11,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:50:11,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 13:50:11,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:50:11,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:50:11,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:50:11,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:50:11,498 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:50:11,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:50:11,498 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:50:11,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:50:11,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:50:11,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:50:11,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:50:11,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:50:11,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:50:11,500 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:50:11,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:50:11,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:50:11,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:50:11,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:50:11,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:50:11,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:50:11,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:50:11,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:50:11,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:50:11,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:50:11,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 13:50:11,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:50:11,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:50:11,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:50:11,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:50:11,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:50:11,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:50:11,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27c2755/118957591b1f4b8694079e8ba41b9357/FLAG66faa7801 [2020-10-13 13:50:12,377 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:50:12,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:50:12,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27c2755/118957591b1f4b8694079e8ba41b9357/FLAG66faa7801 [2020-10-13 13:50:12,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2f27c2755/118957591b1f4b8694079e8ba41b9357 [2020-10-13 13:50:12,739 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:50:12,741 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:50:12,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:50:12,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:50:12,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:50:12,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:50:12" (1/1) ... [2020-10-13 13:50:12,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4afdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:12, skipping insertion in model container [2020-10-13 13:50:12,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:50:12" (1/1) ... [2020-10-13 13:50:12,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:50:12,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:50:13,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:50:13,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:50:13,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:50:13,458 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:50:13,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13 WrapperNode [2020-10-13 13:50:13,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:50:13,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:50:13,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:50:13,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:50:13,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... [2020-10-13 13:50:13,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:50:13,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:50:13,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:50:13,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:50:13,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:50:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:50:13,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:50:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:50:13,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:50:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:50:13,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:50:13,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:50:13,623 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:50:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:50:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:50:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:50:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:50:13,624 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:50:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:50:13,625 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:50:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:50:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:50:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:50:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:50:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:50:14,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:50:14,871 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:50:14,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:50:14 BoogieIcfgContainer [2020-10-13 13:50:14,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:50:14,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:50:14,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:50:14,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:50:14,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:50:12" (1/3) ... [2020-10-13 13:50:14,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:50:14, skipping insertion in model container [2020-10-13 13:50:14,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:50:13" (2/3) ... [2020-10-13 13:50:14,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d3ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:50:14, skipping insertion in model container [2020-10-13 13:50:14,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:50:14" (3/3) ... [2020-10-13 13:50:14,887 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-13 13:50:14,899 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:50:14,907 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:50:14,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:50:14,950 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:50:14,950 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:50:14,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:50:14,951 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:50:14,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:50:14,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:50:14,951 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:50:14,952 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:50:14,976 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states. [2020-10-13 13:50:14,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 13:50:14,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:14,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:50:14,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:14,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:14,999 INFO L82 PathProgramCache]: Analyzing trace with hash -609017662, now seen corresponding path program 1 times [2020-10-13 13:50:15,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:15,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376486463] [2020-10-13 13:50:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:15,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:15,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:16,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:16,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:16,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:20,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:20,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-13 13:50:20,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:50:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5136 [2020-10-13 13:50:20,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:20,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 13:50:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 13:50:21,276 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:21,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:21,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:21,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 13:50:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:21,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:21,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376486463] [2020-10-13 13:50:21,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:21,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:21,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997614858] [2020-10-13 13:50:21,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:21,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:21,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:21,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:21,445 INFO L87 Difference]: Start difference. First operand 223 states. Second operand 5 states. [2020-10-13 13:50:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:24,374 INFO L93 Difference]: Finished difference Result 620 states and 1090 transitions. [2020-10-13 13:50:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:50:24,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-13 13:50:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:24,407 INFO L225 Difference]: With dead ends: 620 [2020-10-13 13:50:24,408 INFO L226 Difference]: Without dead ends: 418 [2020-10-13 13:50:24,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-13 13:50:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 416. [2020-10-13 13:50:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-10-13 13:50:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 610 transitions. [2020-10-13 13:50:24,586 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 610 transitions. Word has length 98 [2020-10-13 13:50:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:24,587 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 610 transitions. [2020-10-13 13:50:24,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:24,588 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 610 transitions. [2020-10-13 13:50:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-13 13:50:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:24,608 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] [2020-10-13 13:50:24,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:50:24,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:24,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:24,610 INFO L82 PathProgramCache]: Analyzing trace with hash -2059620470, now seen corresponding path program 1 times [2020-10-13 13:50:24,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:24,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746228598] [2020-10-13 13:50:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:24,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:24,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:24,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:26,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:29,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:29,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-13 13:50:29,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:50:29,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:50:29,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 13:50:29,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:50:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:29,969 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:29,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:29,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:30,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:30,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:30,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:30,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 13:50:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:30,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:50:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:30,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746228598] [2020-10-13 13:50:30,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:30,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:30,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756360174] [2020-10-13 13:50:30,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:30,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:30,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:30,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:30,044 INFO L87 Difference]: Start difference. First operand 416 states and 610 transitions. Second operand 4 states. [2020-10-13 13:50:31,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:31,254 INFO L93 Difference]: Finished difference Result 1202 states and 1758 transitions. [2020-10-13 13:50:31,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:50:31,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-13 13:50:31,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:31,259 INFO L225 Difference]: With dead ends: 1202 [2020-10-13 13:50:31,260 INFO L226 Difference]: Without dead ends: 818 [2020-10-13 13:50:31,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:31,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-10-13 13:50:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 418. [2020-10-13 13:50:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-10-13 13:50:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 612 transitions. [2020-10-13 13:50:31,299 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 612 transitions. Word has length 99 [2020-10-13 13:50:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:31,299 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 612 transitions. [2020-10-13 13:50:31,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 612 transitions. [2020-10-13 13:50:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:50:31,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:31,302 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] [2020-10-13 13:50:31,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:50:31,302 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:31,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:31,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1859779005, now seen corresponding path program 1 times [2020-10-13 13:50:31,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:31,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137002471] [2020-10-13 13:50:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:31,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:31,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:32,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:32,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:50:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:50:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 13:50:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 13:50:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 13:50:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:36,600 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:36,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:50:36,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:36,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137002471] [2020-10-13 13:50:36,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:36,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:36,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707652143] [2020-10-13 13:50:36,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:36,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:36,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:36,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:36,646 INFO L87 Difference]: Start difference. First operand 418 states and 612 transitions. Second operand 5 states. [2020-10-13 13:50:37,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:37,608 INFO L93 Difference]: Finished difference Result 818 states and 1198 transitions. [2020-10-13 13:50:37,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:37,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 13:50:37,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:37,613 INFO L225 Difference]: With dead ends: 818 [2020-10-13 13:50:37,613 INFO L226 Difference]: Without dead ends: 418 [2020-10-13 13:50:37,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:37,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2020-10-13 13:50:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 417. [2020-10-13 13:50:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-13 13:50:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 608 transitions. [2020-10-13 13:50:37,643 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 608 transitions. Word has length 100 [2020-10-13 13:50:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:37,643 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 608 transitions. [2020-10-13 13:50:37,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 608 transitions. [2020-10-13 13:50:37,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:50:37,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:37,645 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] [2020-10-13 13:50:37,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:50:37,646 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:37,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:37,646 INFO L82 PathProgramCache]: Analyzing trace with hash 355537167, now seen corresponding path program 1 times [2020-10-13 13:50:37,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:37,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77994576] [2020-10-13 13:50:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:37,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:38,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:40,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:40,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:42,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:50:42,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:50:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:50:42,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:42,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:50:42,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:42,954 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:42,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:42,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:42,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:42,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:42,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:50:42,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:42,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:42,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:42,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:42,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77994576] [2020-10-13 13:50:42,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:42,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:42,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541742463] [2020-10-13 13:50:42,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:42,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:42,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:42,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:42,995 INFO L87 Difference]: Start difference. First operand 417 states and 608 transitions. Second operand 5 states. [2020-10-13 13:50:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:44,398 INFO L93 Difference]: Finished difference Result 1173 states and 1704 transitions. [2020-10-13 13:50:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:44,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 13:50:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:44,403 INFO L225 Difference]: With dead ends: 1173 [2020-10-13 13:50:44,404 INFO L226 Difference]: Without dead ends: 795 [2020-10-13 13:50:44,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:44,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2020-10-13 13:50:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 793. [2020-10-13 13:50:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-10-13 13:50:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1143 transitions. [2020-10-13 13:50:44,456 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1143 transitions. Word has length 100 [2020-10-13 13:50:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:44,456 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1143 transitions. [2020-10-13 13:50:44,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1143 transitions. [2020-10-13 13:50:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:50:44,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:44,458 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] [2020-10-13 13:50:44,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:50:44,459 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:44,459 INFO L82 PathProgramCache]: Analyzing trace with hash 398287602, now seen corresponding path program 1 times [2020-10-13 13:50:44,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:44,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704980739] [2020-10-13 13:50:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:44,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:45,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:48,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:48,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 13:50:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:49,714 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:49,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:49,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:50:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:49,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:49,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:49,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704980739] [2020-10-13 13:50:49,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:49,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:50:49,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920887573] [2020-10-13 13:50:49,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:50:49,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:50:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:50:49,749 INFO L87 Difference]: Start difference. First operand 793 states and 1143 transitions. Second operand 4 states. [2020-10-13 13:50:49,927 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2020-10-13 13:50:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:50,849 INFO L93 Difference]: Finished difference Result 1565 states and 2381 transitions. [2020-10-13 13:50:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:50,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-13 13:50:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:50,857 INFO L225 Difference]: With dead ends: 1565 [2020-10-13 13:50:50,857 INFO L226 Difference]: Without dead ends: 1187 [2020-10-13 13:50:50,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-13 13:50:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2020-10-13 13:50:50,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2020-10-13 13:50:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1767 transitions. [2020-10-13 13:50:50,947 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1767 transitions. Word has length 100 [2020-10-13 13:50:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:50,948 INFO L479 AbstractCegarLoop]: Abstraction has 1185 states and 1767 transitions. [2020-10-13 13:50:50,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:50:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1767 transitions. [2020-10-13 13:50:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 13:50:50,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:50,951 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] [2020-10-13 13:50:50,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:50:50,952 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:50,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:50,952 INFO L82 PathProgramCache]: Analyzing trace with hash -516504055, now seen corresponding path program 1 times [2020-10-13 13:50:50,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:50,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936830983] [2020-10-13 13:50:50,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:51,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:52,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:52,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:54,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:56,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:50:56,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:50:56,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-13 13:50:56,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:56,233 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:50:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:50:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:56,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:50:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:50:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:50:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:50:56,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:50:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:50:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:50:56,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:50:56,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:50:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:50:56,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936830983] [2020-10-13 13:50:56,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:50:56,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:50:56,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876870852] [2020-10-13 13:50:56,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:50:56,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:50:56,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:50:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:50:56,277 INFO L87 Difference]: Start difference. First operand 1185 states and 1767 transitions. Second operand 5 states. [2020-10-13 13:50:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:50:57,511 INFO L93 Difference]: Finished difference Result 2880 states and 4282 transitions. [2020-10-13 13:50:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:50:57,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2020-10-13 13:50:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:50:57,524 INFO L225 Difference]: With dead ends: 2880 [2020-10-13 13:50:57,525 INFO L226 Difference]: Without dead ends: 1728 [2020-10-13 13:50:57,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:50:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2020-10-13 13:50:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2020-10-13 13:50:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2020-10-13 13:50:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2532 transitions. [2020-10-13 13:50:57,664 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2532 transitions. Word has length 100 [2020-10-13 13:50:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:50:57,665 INFO L479 AbstractCegarLoop]: Abstraction has 1726 states and 2532 transitions. [2020-10-13 13:50:57,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:50:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2532 transitions. [2020-10-13 13:50:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 13:50:57,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:50:57,671 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] [2020-10-13 13:50:57,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:50:57,671 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:50:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:50:57,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1467715405, now seen corresponding path program 1 times [2020-10-13 13:50:57,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:50:57,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207271111] [2020-10-13 13:50:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:50:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:50:57,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:57,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:57,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:58,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:58,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:58,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:50:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:02,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 13:51:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:51:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 13:51:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:51:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 13:51:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:02,955 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:02,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:02,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:02,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:02,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:51:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:02,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207271111] [2020-10-13 13:51:02,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:02,997 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:02,997 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307431442] [2020-10-13 13:51:02,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:02,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:02,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:02,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:02,998 INFO L87 Difference]: Start difference. First operand 1726 states and 2532 transitions. Second operand 5 states. [2020-10-13 13:51:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:04,745 INFO L93 Difference]: Finished difference Result 4965 states and 7265 transitions. [2020-10-13 13:51:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:04,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2020-10-13 13:51:04,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:04,764 INFO L225 Difference]: With dead ends: 4965 [2020-10-13 13:51:04,764 INFO L226 Difference]: Without dead ends: 3311 [2020-10-13 13:51:04,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:04,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2020-10-13 13:51:04,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3309. [2020-10-13 13:51:04,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3309 states. [2020-10-13 13:51:05,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4800 transitions. [2020-10-13 13:51:05,013 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4800 transitions. Word has length 104 [2020-10-13 13:51:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:05,013 INFO L479 AbstractCegarLoop]: Abstraction has 3309 states and 4800 transitions. [2020-10-13 13:51:05,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4800 transitions. [2020-10-13 13:51:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-13 13:51:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:05,018 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] [2020-10-13 13:51:05,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:51:05,018 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash 531214685, now seen corresponding path program 1 times [2020-10-13 13:51:05,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:05,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366371351] [2020-10-13 13:51:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:07,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2934 [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:51:07,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 13:51:07,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:51:07,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:08,171 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:08,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:08,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:08,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:08,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:08,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:08,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:51:08,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:08,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:08,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:08,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366371351] [2020-10-13 13:51:08,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:08,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:51:08,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720330359] [2020-10-13 13:51:08,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:51:08,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:08,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:51:08,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:08,205 INFO L87 Difference]: Start difference. First operand 3309 states and 4800 transitions. Second operand 4 states. [2020-10-13 13:51:10,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:10,114 INFO L93 Difference]: Finished difference Result 9788 states and 14192 transitions. [2020-10-13 13:51:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:51:10,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2020-10-13 13:51:10,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:10,143 INFO L225 Difference]: With dead ends: 9788 [2020-10-13 13:51:10,143 INFO L226 Difference]: Without dead ends: 6563 [2020-10-13 13:51:10,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:10,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2020-10-13 13:51:10,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 3317. [2020-10-13 13:51:10,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3317 states. [2020-10-13 13:51:10,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4808 transitions. [2020-10-13 13:51:10,443 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4808 transitions. Word has length 105 [2020-10-13 13:51:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:10,443 INFO L479 AbstractCegarLoop]: Abstraction has 3317 states and 4808 transitions. [2020-10-13 13:51:10,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:51:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4808 transitions. [2020-10-13 13:51:10,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:51:10,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:10,448 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] [2020-10-13 13:51:10,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:51:10,448 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:10,449 INFO L82 PathProgramCache]: Analyzing trace with hash -467799737, now seen corresponding path program 1 times [2020-10-13 13:51:10,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:10,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685835477] [2020-10-13 13:51:10,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:10,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:10,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:11,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:11,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:14,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:14,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:51:14,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:51:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4062 [2020-10-13 13:51:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:51:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:51:14,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 13:51:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:14,750 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:14,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:14,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:14,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:14,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:14,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:14,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:14,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685835477] [2020-10-13 13:51:14,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:14,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:51:14,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929087404] [2020-10-13 13:51:14,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:51:14,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:14,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:51:14,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:14,782 INFO L87 Difference]: Start difference. First operand 3317 states and 4808 transitions. Second operand 4 states. [2020-10-13 13:51:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:16,618 INFO L93 Difference]: Finished difference Result 8363 states and 12211 transitions. [2020-10-13 13:51:16,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:51:16,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-13 13:51:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:16,645 INFO L225 Difference]: With dead ends: 8363 [2020-10-13 13:51:16,645 INFO L226 Difference]: Without dead ends: 5883 [2020-10-13 13:51:16,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2020-10-13 13:51:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5881. [2020-10-13 13:51:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-10-13 13:51:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 8355 transitions. [2020-10-13 13:51:17,153 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 8355 transitions. Word has length 106 [2020-10-13 13:51:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:17,154 INFO L479 AbstractCegarLoop]: Abstraction has 5881 states and 8355 transitions. [2020-10-13 13:51:17,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:51:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 8355 transitions. [2020-10-13 13:51:17,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:51:17,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:17,163 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] [2020-10-13 13:51:17,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:51:17,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:17,163 INFO L82 PathProgramCache]: Analyzing trace with hash -510550172, now seen corresponding path program 1 times [2020-10-13 13:51:17,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:17,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674110864] [2020-10-13 13:51:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:17,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:18,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:18,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4670 [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:21,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:51:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 13:51:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:22,069 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:22,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:22,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674110864] [2020-10-13 13:51:22,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:22,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:22,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897065369] [2020-10-13 13:51:22,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:22,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:22,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:22,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:22,094 INFO L87 Difference]: Start difference. First operand 5881 states and 8355 transitions. Second operand 5 states. [2020-10-13 13:51:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:23,600 INFO L93 Difference]: Finished difference Result 12625 states and 17674 transitions. [2020-10-13 13:51:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:23,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 13:51:23,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:23,628 INFO L225 Difference]: With dead ends: 12625 [2020-10-13 13:51:23,629 INFO L226 Difference]: Without dead ends: 6559 [2020-10-13 13:51:23,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6559 states. [2020-10-13 13:51:24,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6559 to 6557. [2020-10-13 13:51:24,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6557 states. [2020-10-13 13:51:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6557 states to 6557 states and 9059 transitions. [2020-10-13 13:51:24,125 INFO L78 Accepts]: Start accepts. Automaton has 6557 states and 9059 transitions. Word has length 106 [2020-10-13 13:51:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:24,125 INFO L479 AbstractCegarLoop]: Abstraction has 6557 states and 9059 transitions. [2020-10-13 13:51:24,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6557 states and 9059 transitions. [2020-10-13 13:51:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 13:51:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:24,134 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] [2020-10-13 13:51:24,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:51:24,134 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2095533452, now seen corresponding path program 1 times [2020-10-13 13:51:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:24,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432715384] [2020-10-13 13:51:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:24,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:24,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:28,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4753 [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:28,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:51:28,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 13:51:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:29,129 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:29,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:29,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:29,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:29,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:29,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:29,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432715384] [2020-10-13 13:51:29,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:29,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:29,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991715004] [2020-10-13 13:51:29,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:29,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:29,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:29,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:29,158 INFO L87 Difference]: Start difference. First operand 6557 states and 9059 transitions. Second operand 5 states. [2020-10-13 13:51:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:30,326 INFO L93 Difference]: Finished difference Result 12409 states and 17285 transitions. [2020-10-13 13:51:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:30,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2020-10-13 13:51:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:30,337 INFO L225 Difference]: With dead ends: 12409 [2020-10-13 13:51:30,337 INFO L226 Difference]: Without dead ends: 6129 [2020-10-13 13:51:30,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6129 states. [2020-10-13 13:51:30,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6129 to 6117. [2020-10-13 13:51:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6117 states. [2020-10-13 13:51:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6117 states to 6117 states and 8532 transitions. [2020-10-13 13:51:30,800 INFO L78 Accepts]: Start accepts. Automaton has 6117 states and 8532 transitions. Word has length 106 [2020-10-13 13:51:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:30,800 INFO L479 AbstractCegarLoop]: Abstraction has 6117 states and 8532 transitions. [2020-10-13 13:51:30,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:30,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6117 states and 8532 transitions. [2020-10-13 13:51:30,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:51:30,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:30,808 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] [2020-10-13 13:51:30,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:51:30,809 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1750952642, now seen corresponding path program 1 times [2020-10-13 13:51:30,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:30,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114727043] [2020-10-13 13:51:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:30,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:32,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:32,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:35,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 13:51:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:36,129 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:36,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:36,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:36,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:36,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:51:36,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:36,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:36,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:36,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114727043] [2020-10-13 13:51:36,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:36,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:36,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860622020] [2020-10-13 13:51:36,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:36,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:36,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:36,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:36,158 INFO L87 Difference]: Start difference. First operand 6117 states and 8532 transitions. Second operand 5 states. [2020-10-13 13:51:37,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:37,357 INFO L93 Difference]: Finished difference Result 7873 states and 11086 transitions. [2020-10-13 13:51:37,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:37,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 13:51:37,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:37,370 INFO L225 Difference]: With dead ends: 7873 [2020-10-13 13:51:37,370 INFO L226 Difference]: Without dead ends: 5588 [2020-10-13 13:51:37,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2020-10-13 13:51:37,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5582. [2020-10-13 13:51:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5582 states. [2020-10-13 13:51:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 7901 transitions. [2020-10-13 13:51:37,832 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 7901 transitions. Word has length 108 [2020-10-13 13:51:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:37,832 INFO L479 AbstractCegarLoop]: Abstraction has 5582 states and 7901 transitions. [2020-10-13 13:51:37,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:37,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 7901 transitions. [2020-10-13 13:51:37,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 13:51:37,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:37,839 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] [2020-10-13 13:51:37,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 13:51:37,839 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:37,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:37,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1327164403, now seen corresponding path program 1 times [2020-10-13 13:51:37,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:37,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1214363903] [2020-10-13 13:51:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:37,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:37,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:37,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:37,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:38,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:38,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:39,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:42,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:42,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-13 13:51:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:51:42,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:51:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:51:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:51:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 13:51:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:51:43,166 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:43,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:43,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:43,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:43,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:43,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1214363903] [2020-10-13 13:51:43,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:43,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:51:43,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850319502] [2020-10-13 13:51:43,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:51:43,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:43,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:51:43,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:51:43,207 INFO L87 Difference]: Start difference. First operand 5582 states and 7901 transitions. Second operand 5 states. [2020-10-13 13:51:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:45,277 INFO L93 Difference]: Finished difference Result 11891 states and 17112 transitions. [2020-10-13 13:51:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:51:45,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-13 13:51:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:45,290 INFO L225 Difference]: With dead ends: 11891 [2020-10-13 13:51:45,290 INFO L226 Difference]: Without dead ends: 7463 [2020-10-13 13:51:45,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:51:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2020-10-13 13:51:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 7461. [2020-10-13 13:51:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7461 states. [2020-10-13 13:51:45,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 10419 transitions. [2020-10-13 13:51:45,888 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 10419 transitions. Word has length 108 [2020-10-13 13:51:45,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:45,888 INFO L479 AbstractCegarLoop]: Abstraction has 7461 states and 10419 transitions. [2020-10-13 13:51:45,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:51:45,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 10419 transitions. [2020-10-13 13:51:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 13:51:45,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:45,895 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] [2020-10-13 13:51:45,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 13:51:45,895 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:45,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1003129773, now seen corresponding path program 1 times [2020-10-13 13:51:45,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:45,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944874764] [2020-10-13 13:51:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:46,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:48,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:48,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 13:51:48,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 13:51:48,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-13 13:51:48,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:51:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:51:48,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 13:51:48,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:48,681 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:48,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:48,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:48,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:48,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944874764] [2020-10-13 13:51:48,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:48,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:51:48,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961905137] [2020-10-13 13:51:48,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:51:48,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:48,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:51:48,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:48,712 INFO L87 Difference]: Start difference. First operand 7461 states and 10419 transitions. Second operand 4 states. [2020-10-13 13:51:50,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:50,631 INFO L93 Difference]: Finished difference Result 9554 states and 13364 transitions. [2020-10-13 13:51:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:51:50,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-13 13:51:50,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:50,642 INFO L225 Difference]: With dead ends: 9554 [2020-10-13 13:51:50,642 INFO L226 Difference]: Without dead ends: 6612 [2020-10-13 13:51:50,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6612 states. [2020-10-13 13:51:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6612 to 6610. [2020-10-13 13:51:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6610 states. [2020-10-13 13:51:51,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6610 states to 6610 states and 9070 transitions. [2020-10-13 13:51:51,239 INFO L78 Accepts]: Start accepts. Automaton has 6610 states and 9070 transitions. Word has length 110 [2020-10-13 13:51:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:51,239 INFO L479 AbstractCegarLoop]: Abstraction has 6610 states and 9070 transitions. [2020-10-13 13:51:51,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:51:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 6610 states and 9070 transitions. [2020-10-13 13:51:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:51:51,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:51,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 13:51:51,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 13:51:51,247 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash 816791102, now seen corresponding path program 1 times [2020-10-13 13:51:51,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:51,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918752768] [2020-10-13 13:51:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:51,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:51,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:54,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:54,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:55,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:55,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:56,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 13:51:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:56,458 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:51:56,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:51:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:56,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:51:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:51:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:51:56,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918752768] [2020-10-13 13:51:56,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:51:56,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:51:56,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292505568] [2020-10-13 13:51:56,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:51:56,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:51:56,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:51:56,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:56,482 INFO L87 Difference]: Start difference. First operand 6610 states and 9070 transitions. Second operand 4 states. [2020-10-13 13:51:58,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:51:58,278 INFO L93 Difference]: Finished difference Result 15867 states and 22543 transitions. [2020-10-13 13:51:58,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:51:58,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-13 13:51:58,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:51:58,300 INFO L225 Difference]: With dead ends: 15867 [2020-10-13 13:51:58,301 INFO L226 Difference]: Without dead ends: 11555 [2020-10-13 13:51:58,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:51:58,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11555 states. [2020-10-13 13:51:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11555 to 11553. [2020-10-13 13:51:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11553 states. [2020-10-13 13:51:59,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11553 states to 11553 states and 16065 transitions. [2020-10-13 13:51:59,413 INFO L78 Accepts]: Start accepts. Automaton has 11553 states and 16065 transitions. Word has length 112 [2020-10-13 13:51:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:51:59,413 INFO L479 AbstractCegarLoop]: Abstraction has 11553 states and 16065 transitions. [2020-10-13 13:51:59,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:51:59,413 INFO L276 IsEmpty]: Start isEmpty. Operand 11553 states and 16065 transitions. [2020-10-13 13:51:59,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:51:59,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:51:59,420 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] [2020-10-13 13:51:59,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 13:51:59,420 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:51:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:51:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1036909273, now seen corresponding path program 1 times [2020-10-13 13:51:59,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:51:59,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064063085] [2020-10-13 13:51:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:51:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:51:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:59,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:51:59,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:01,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:01,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:03,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 13:52:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:04,704 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:04,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:04,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:04,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:04,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:04,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 13:52:04,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:04,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:04,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:04,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:52:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:04,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064063085] [2020-10-13 13:52:04,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:04,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 13:52:04,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399476041] [2020-10-13 13:52:04,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 13:52:04,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:04,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 13:52:04,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 13:52:04,840 INFO L87 Difference]: Start difference. First operand 11553 states and 16065 transitions. Second operand 7 states. [2020-10-13 13:52:05,037 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 13:52:09,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:09,399 INFO L93 Difference]: Finished difference Result 43509 states and 63660 transitions. [2020-10-13 13:52:09,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 13:52:09,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 112 [2020-10-13 13:52:09,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:09,459 INFO L225 Difference]: With dead ends: 43509 [2020-10-13 13:52:09,459 INFO L226 Difference]: Without dead ends: 34407 [2020-10-13 13:52:09,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-13 13:52:09,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34407 states. [2020-10-13 13:52:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34407 to 29149. [2020-10-13 13:52:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29149 states. [2020-10-13 13:52:11,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29149 states to 29149 states and 42198 transitions. [2020-10-13 13:52:11,947 INFO L78 Accepts]: Start accepts. Automaton has 29149 states and 42198 transitions. Word has length 112 [2020-10-13 13:52:11,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:11,947 INFO L479 AbstractCegarLoop]: Abstraction has 29149 states and 42198 transitions. [2020-10-13 13:52:11,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 13:52:11,947 INFO L276 IsEmpty]: Start isEmpty. Operand 29149 states and 42198 transitions. [2020-10-13 13:52:11,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:52:11,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:11,957 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] [2020-10-13 13:52:11,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 13:52:11,958 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:11,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:11,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1901176972, now seen corresponding path program 1 times [2020-10-13 13:52:11,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:11,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164375196] [2020-10-13 13:52:11,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:11,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:16,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 13:52:16,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:17,192 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:17,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:17,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:17,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:52:17,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:17,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164375196] [2020-10-13 13:52:17,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:17,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:17,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886529120] [2020-10-13 13:52:17,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:52:17,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:17,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:52:17,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:17,239 INFO L87 Difference]: Start difference. First operand 29149 states and 42198 transitions. Second operand 6 states. [2020-10-13 13:52:17,471 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-13 13:52:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:19,516 INFO L93 Difference]: Finished difference Result 37913 states and 55273 transitions. [2020-10-13 13:52:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:52:19,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-13 13:52:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:19,532 INFO L225 Difference]: With dead ends: 37913 [2020-10-13 13:52:19,532 INFO L226 Difference]: Without dead ends: 13971 [2020-10-13 13:52:19,558 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 [2020-10-13 13:52:19,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13971 states. [2020-10-13 13:52:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13971 to 11723. [2020-10-13 13:52:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11723 states. [2020-10-13 13:52:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11723 states to 11723 states and 16064 transitions. [2020-10-13 13:52:20,420 INFO L78 Accepts]: Start accepts. Automaton has 11723 states and 16064 transitions. Word has length 112 [2020-10-13 13:52:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:20,420 INFO L479 AbstractCegarLoop]: Abstraction has 11723 states and 16064 transitions. [2020-10-13 13:52:20,420 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:52:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 11723 states and 16064 transitions. [2020-10-13 13:52:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:52:20,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:20,427 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] [2020-10-13 13:52:20,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 13:52:20,427 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:20,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:20,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1169791837, now seen corresponding path program 1 times [2020-10-13 13:52:20,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:20,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290540584] [2020-10-13 13:52:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1959 [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 13:52:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 13:52:22,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 13:52:22,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:22,655 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:22,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:22,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:22,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:22,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:52:22,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:52:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:22,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 13:52:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:22,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290540584] [2020-10-13 13:52:22,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:22,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:22,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701553031] [2020-10-13 13:52:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 13:52:22,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:22,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 13:52:22,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:22,703 INFO L87 Difference]: Start difference. First operand 11723 states and 16064 transitions. Second operand 6 states. [2020-10-13 13:52:22,930 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-13 13:52:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:25,278 INFO L93 Difference]: Finished difference Result 22568 states and 32276 transitions. [2020-10-13 13:52:25,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 13:52:25,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-13 13:52:25,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:25,297 INFO L225 Difference]: With dead ends: 22568 [2020-10-13 13:52:25,297 INFO L226 Difference]: Without dead ends: 13447 [2020-10-13 13:52:25,308 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 [2020-10-13 13:52:25,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13447 states. [2020-10-13 13:52:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13447 to 10534. [2020-10-13 13:52:26,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10534 states. [2020-10-13 13:52:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 14609 transitions. [2020-10-13 13:52:26,226 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 14609 transitions. Word has length 112 [2020-10-13 13:52:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:26,226 INFO L479 AbstractCegarLoop]: Abstraction has 10534 states and 14609 transitions. [2020-10-13 13:52:26,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 13:52:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 14609 transitions. [2020-10-13 13:52:26,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:52:26,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:26,231 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] [2020-10-13 13:52:26,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 13:52:26,232 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 187089214, now seen corresponding path program 1 times [2020-10-13 13:52:26,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:26,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717249490] [2020-10-13 13:52:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:27,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:27,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 13:52:27,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:27,323 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:27,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:27,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:27,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:27,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:27,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 13:52:27,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:27,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:27,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:27,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:27,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717249490] [2020-10-13 13:52:27,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:27,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:27,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081070552] [2020-10-13 13:52:27,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:27,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:27,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:27,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:27,367 INFO L87 Difference]: Start difference. First operand 10534 states and 14609 transitions. Second operand 5 states. [2020-10-13 13:52:29,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:29,959 INFO L93 Difference]: Finished difference Result 13447 states and 18777 transitions. [2020-10-13 13:52:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:29,960 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 13:52:29,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:29,971 INFO L225 Difference]: With dead ends: 13447 [2020-10-13 13:52:29,972 INFO L226 Difference]: Without dead ends: 10533 [2020-10-13 13:52:29,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10533 states. [2020-10-13 13:52:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10533 to 10296. [2020-10-13 13:52:30,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10296 states. [2020-10-13 13:52:30,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 14340 transitions. [2020-10-13 13:52:30,912 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 14340 transitions. Word has length 112 [2020-10-13 13:52:30,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:30,912 INFO L479 AbstractCegarLoop]: Abstraction has 10296 states and 14340 transitions. [2020-10-13 13:52:30,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 14340 transitions. [2020-10-13 13:52:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-13 13:52:30,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:30,918 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] [2020-10-13 13:52:30,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 13:52:30,918 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:30,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:30,919 INFO L82 PathProgramCache]: Analyzing trace with hash 319477525, now seen corresponding path program 1 times [2020-10-13 13:52:30,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:30,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227636509] [2020-10-13 13:52:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:30,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:31,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:32,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:32,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 13:52:32,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 13:52:32,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:32,799 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:32,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:32,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:32,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:32,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:32,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227636509] [2020-10-13 13:52:32,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:32,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:32,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607444411] [2020-10-13 13:52:32,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:32,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:32,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:32,827 INFO L87 Difference]: Start difference. First operand 10296 states and 14340 transitions. Second operand 5 states. [2020-10-13 13:52:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:34,544 INFO L93 Difference]: Finished difference Result 12194 states and 17029 transitions. [2020-10-13 13:52:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:34,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2020-10-13 13:52:34,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:34,554 INFO L225 Difference]: With dead ends: 12194 [2020-10-13 13:52:34,555 INFO L226 Difference]: Without dead ends: 9191 [2020-10-13 13:52:34,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2020-10-13 13:52:35,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 9181. [2020-10-13 13:52:35,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9181 states. [2020-10-13 13:52:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 12815 transitions. [2020-10-13 13:52:35,332 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 12815 transitions. Word has length 112 [2020-10-13 13:52:35,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:35,333 INFO L479 AbstractCegarLoop]: Abstraction has 9181 states and 12815 transitions. [2020-10-13 13:52:35,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 12815 transitions. [2020-10-13 13:52:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 13:52:35,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:35,338 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] [2020-10-13 13:52:35,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 13:52:35,338 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1850244426, now seen corresponding path program 1 times [2020-10-13 13:52:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:35,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985895411] [2020-10-13 13:52:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:35,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 13:52:35,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:36,225 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:36,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:36,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:36,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985895411] [2020-10-13 13:52:36,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:36,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:52:36,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509246935] [2020-10-13 13:52:36,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:52:36,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:36,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:52:36,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:52:36,264 INFO L87 Difference]: Start difference. First operand 9181 states and 12815 transitions. Second operand 5 states. [2020-10-13 13:52:38,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:38,405 INFO L93 Difference]: Finished difference Result 11013 states and 15443 transitions. [2020-10-13 13:52:38,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:52:38,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-13 13:52:38,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:38,415 INFO L225 Difference]: With dead ends: 11013 [2020-10-13 13:52:38,416 INFO L226 Difference]: Without dead ends: 8131 [2020-10-13 13:52:38,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:52:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2020-10-13 13:52:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 7994. [2020-10-13 13:52:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7994 states. [2020-10-13 13:52:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7994 states to 7994 states and 11156 transitions. [2020-10-13 13:52:39,157 INFO L78 Accepts]: Start accepts. Automaton has 7994 states and 11156 transitions. Word has length 114 [2020-10-13 13:52:39,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:39,158 INFO L479 AbstractCegarLoop]: Abstraction has 7994 states and 11156 transitions. [2020-10-13 13:52:39,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:52:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7994 states and 11156 transitions. [2020-10-13 13:52:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:52:39,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:39,162 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] [2020-10-13 13:52:39,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 13:52:39,162 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:39,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1156128166, now seen corresponding path program 1 times [2020-10-13 13:52:39,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:39,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264148124] [2020-10-13 13:52:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:39,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:44,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 13:52:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:52:44,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 13:52:44,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:44,736 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 31 [2020-10-13 13:52:45,069 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 43 [2020-10-13 13:52:45,227 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-13 13:52:45,625 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 62 [2020-10-13 13:52:46,317 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-13 13:52:46,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:52:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:52:46,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:52:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:52:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:52:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:52:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:52:46,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:52:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:52:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:52:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:52:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:52:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 13:52:46,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264148124] [2020-10-13 13:52:46,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:52:46,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-13 13:52:46,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261619456] [2020-10-13 13:52:46,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 13:52:46,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:52:46,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 13:52:46,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-13 13:52:46,412 INFO L87 Difference]: Start difference. First operand 7994 states and 11156 transitions. Second operand 19 states. [2020-10-13 13:52:46,712 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-13 13:52:47,499 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-10-13 13:52:47,836 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-13 13:52:48,188 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-13 13:52:48,923 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 82 [2020-10-13 13:52:49,391 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 88 [2020-10-13 13:52:49,790 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2020-10-13 13:52:57,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:52:57,193 INFO L93 Difference]: Finished difference Result 20453 states and 29156 transitions. [2020-10-13 13:52:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 13:52:57,194 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 116 [2020-10-13 13:52:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:52:57,215 INFO L225 Difference]: With dead ends: 20453 [2020-10-13 13:52:57,215 INFO L226 Difference]: Without dead ends: 18151 [2020-10-13 13:52:57,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 13:52:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18151 states. [2020-10-13 13:52:58,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18151 to 9930. [2020-10-13 13:52:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9930 states. [2020-10-13 13:52:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14073 transitions. [2020-10-13 13:52:58,446 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14073 transitions. Word has length 116 [2020-10-13 13:52:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:52:58,446 INFO L479 AbstractCegarLoop]: Abstraction has 9930 states and 14073 transitions. [2020-10-13 13:52:58,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 13:52:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14073 transitions. [2020-10-13 13:52:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-13 13:52:58,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:52:58,452 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] [2020-10-13 13:52:58,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 13:52:58,453 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:52:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:52:58,453 INFO L82 PathProgramCache]: Analyzing trace with hash 499392925, now seen corresponding path program 1 times [2020-10-13 13:52:58,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:52:58,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885540768] [2020-10-13 13:52:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:52:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 13:52:58,502 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 13:52:58,503 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 13:52:58,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 13:52:58,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:52:58 BoogieIcfgContainer [2020-10-13 13:52:58,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 13:52:58,549 INFO L168 Benchmark]: Toolchain (without parser) took 165808.84 ms. Allocated memory was 143.1 MB in the beginning and 2.8 GB in the end (delta: 2.7 GB). Free memory was 103.1 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 521.2 MB. Max. memory is 7.1 GB. [2020-10-13 13:52:58,549 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 13:52:58,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 717.08 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 102.7 MB in the beginning and 173.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-13 13:52:58,550 INFO L168 Benchmark]: Boogie Preprocessor took 77.39 ms. Allocated memory is still 205.0 MB. Free memory was 173.3 MB in the beginning and 169.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-10-13 13:52:58,551 INFO L168 Benchmark]: RCFGBuilder took 1340.52 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 193.9 MB in the end (delta: -24.0 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-10-13 13:52:58,551 INFO L168 Benchmark]: TraceAbstraction took 163668.10 ms. Allocated memory was 235.4 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 193.9 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 519.7 MB. Max. memory is 7.1 GB. [2020-10-13 13:52:58,554 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.1 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 717.08 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 102.7 MB in the beginning and 173.3 MB in the end (delta: -70.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.39 ms. Allocated memory is still 205.0 MB. Free memory was 173.3 MB in the beginning and 169.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1340.52 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 169.9 MB in the beginning and 193.9 MB in the end (delta: -24.0 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 163668.10 ms. Allocated memory was 235.4 MB in the beginning and 2.8 GB in the end (delta: 2.6 GB). Free memory was 193.9 MB in the beginning and 2.2 GB in the end (delta: -2.1 GB). Peak memory consumption was 519.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 530]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1] int __return_main; [L14] msg_t nomsg = (msg_t )-1; [L15] port_t p12 = 0; [L16] char p12_old = '\x0'; [L17] char p12_new = '\x0'; [L18] _Bool ep12 = 0; [L19] port_t p13 = 0; [L20] char p13_old = '\x0'; [L21] char p13_new = '\x0'; [L22] _Bool ep13 = 0; [L23] port_t p21 = 0; [L24] char p21_old = '\x0'; [L25] char p21_new = '\x0'; [L26] _Bool ep21 = 0; [L27] port_t p23 = 0; [L28] char p23_old = '\x0'; [L29] char p23_new = '\x0'; [L30] _Bool ep23 = 0; [L31] port_t p31 = 0; [L32] char p31_old = '\x0'; [L33] char p31_new = '\x0'; [L34] _Bool ep31 = 0; [L35] port_t p32 = 0; [L36] char p32_old = '\x0'; [L37] char p32_new = '\x0'; [L38] _Bool ep32 = 0; [L39] char id1 = '\x0'; [L40] char r1 = '\x0'; [L41] char st1 = '\x0'; [L42] char nl1 = '\x0'; [L43] char m1 = '\x0'; [L44] char max1 = '\x0'; [L45] _Bool mode1 = 0; [L46] char id2 = '\x0'; [L47] char r2 = '\x0'; [L48] char st2 = '\x0'; [L49] char nl2 = '\x0'; [L50] char m2 = '\x0'; [L51] char max2 = '\x0'; [L52] _Bool mode2 = 0; [L53] char id3 = '\x0'; [L54] char r3 = '\x0'; [L55] char st3 = '\x0'; [L56] char nl3 = '\x0'; [L57] char m3 = '\x0'; [L58] char max3 = '\x0'; [L59] _Bool mode3 = 0; [L63] void (*nodes[3])() = { &node1, &node2, &node3 }; [L67] int __return_1131; [L68] int __return_1259; [L69] int __return_1378; [L70] int __tmp_1379_0; [L71] int __return_1487; [L72] int __return_1392; [L75] int main__c1; [L76] int main__i2; [L77] main__c1 = 0 [L78] ep12 = __VERIFIER_nondet_bool() [L79] ep13 = __VERIFIER_nondet_bool() [L80] ep21 = __VERIFIER_nondet_bool() [L81] ep23 = __VERIFIER_nondet_bool() [L82] ep31 = __VERIFIER_nondet_bool() [L83] ep32 = __VERIFIER_nondet_bool() [L84] id1 = __VERIFIER_nondet_char() [L85] r1 = __VERIFIER_nondet_char() [L86] st1 = __VERIFIER_nondet_char() [L87] nl1 = __VERIFIER_nondet_char() [L88] m1 = __VERIFIER_nondet_char() [L89] max1 = __VERIFIER_nondet_char() [L90] mode1 = __VERIFIER_nondet_bool() [L91] id2 = __VERIFIER_nondet_char() [L92] r2 = __VERIFIER_nondet_char() [L93] st2 = __VERIFIER_nondet_char() [L94] nl2 = __VERIFIER_nondet_char() [L95] m2 = __VERIFIER_nondet_char() [L96] max2 = __VERIFIER_nondet_char() [L97] mode2 = __VERIFIER_nondet_bool() [L98] id3 = __VERIFIER_nondet_char() [L99] r3 = __VERIFIER_nondet_char() [L100] st3 = __VERIFIER_nondet_char() [L101] nl3 = __VERIFIER_nondet_char() [L102] m3 = __VERIFIER_nondet_char() [L103] max3 = __VERIFIER_nondet_char() [L104] mode3 = __VERIFIER_nondet_bool() [L106] _Bool init__r121; [L107] _Bool init__r131; [L108] _Bool init__r211; [L109] _Bool init__r231; [L110] _Bool init__r311; [L111] _Bool init__r321; [L112] _Bool init__r122; [L113] int init__tmp; [L114] _Bool init__r132; [L115] int init__tmp___0; [L116] _Bool init__r212; [L117] int init__tmp___1; [L118] _Bool init__r232; [L119] int init__tmp___2; [L120] _Bool init__r312; [L121] int init__tmp___3; [L122] _Bool init__r322; [L123] int init__tmp___4; [L124] int init__tmp___5; [L125] init__r121 = ep12 [L126] init__r131 = ep13 [L127] init__r211 = ep21 [L128] init__r231 = ep23 [L129] init__r311 = ep31 [L130] init__r321 = ep32 [L131] COND FALSE !(!(init__r121 == 0)) [L1620] COND TRUE !(init__r131 == 0) [L1622] COND TRUE !(ep32 == 0) [L1624] init__tmp = 1 [L135] init__r122 = (_Bool)init__tmp [L136] COND TRUE !(init__r131 == 0) [L138] init__tmp___0 = 1 [L140] init__r132 = (_Bool)init__tmp___0 [L141] COND TRUE !(init__r211 == 0) [L143] init__tmp___1 = 1 [L145] init__r212 = (_Bool)init__tmp___1 [L146] COND FALSE !(!(init__r231 == 0)) [L1551] COND TRUE !(init__r211 == 0) [L1553] COND TRUE !(ep13 == 0) [L1555] init__tmp___2 = 1 [L150] init__r232 = (_Bool)init__tmp___2 [L151] COND FALSE !(!(init__r311 == 0)) [L1528] COND TRUE !(init__r321 == 0) [L1530] COND TRUE !(ep21 == 0) [L1532] init__tmp___3 = 1 [L155] init__r312 = (_Bool)init__tmp___3 [L156] COND TRUE !(init__r321 == 0) [L158] init__tmp___4 = 1 [L160] init__r322 = (_Bool)init__tmp___4 [L161] COND TRUE ((int)id1) != ((int)id2) [L163] COND TRUE ((int)id1) != ((int)id3) [L165] COND TRUE ((int)id2) != ((int)id3) [L167] COND TRUE ((int)id1) >= 0 [L169] COND TRUE ((int)id2) >= 0 [L171] COND TRUE ((int)id3) >= 0 [L173] COND TRUE ((int)r1) == 0 [L175] COND TRUE ((int)r2) == 0 [L177] COND TRUE ((int)r3) == 0 [L179] COND TRUE !(init__r122 == 0) [L181] COND TRUE !(init__r132 == 0) [L183] COND TRUE !(init__r212 == 0) [L185] COND TRUE !(init__r232 == 0) [L187] COND TRUE !(init__r312 == 0) [L189] COND TRUE !(init__r322 == 0) [L191] COND TRUE ((int)max1) == ((int)id1) [L193] COND TRUE ((int)max2) == ((int)id2) [L195] COND TRUE ((int)max3) == ((int)id3) [L197] COND TRUE ((int)st1) == 0 [L199] COND TRUE ((int)st2) == 0 [L201] COND TRUE ((int)st3) == 0 [L203] COND TRUE ((int)nl1) == 0 [L205] COND TRUE ((int)nl2) == 0 [L207] COND TRUE ((int)nl3) == 0 [L209] COND TRUE ((int)mode1) == 0 [L211] COND TRUE ((int)mode2) == 0 [L213] COND TRUE ((int)mode3) == 0 [L215] init__tmp___5 = 1 [L216] __return_1131 = init__tmp___5 [L217] main__i2 = __return_1131 [L218] COND TRUE main__i2 != 0 [L220] p12_old = nomsg [L221] p12_new = nomsg [L222] p13_old = nomsg [L223] p13_new = nomsg [L224] p21_old = nomsg [L225] p21_new = nomsg [L226] p23_old = nomsg [L227] p23_new = nomsg [L228] p31_old = nomsg [L229] p31_new = nomsg [L230] p32_old = nomsg [L231] p32_new = nomsg [L232] main__i2 = 0 [L233] COND TRUE main__i2 < 6 [L236] COND FALSE !(!(mode1 == 0)) [L242] COND TRUE ((int)r1) < 2 [L244] COND FALSE !(!(ep12 == 0)) [L255] COND TRUE !(ep13 == 0) [L257] int node1____CPAchecker_TMP_1; [L258] COND TRUE max1 != nomsg [L260] COND TRUE p13_new == nomsg [L262] node1____CPAchecker_TMP_1 = max1 [L264] p13_new = node1____CPAchecker_TMP_1 [L266] mode1 = 1 [L268] COND FALSE !(!(mode2 == 0)) [L274] COND TRUE ((int)r2) < 2 [L276] COND TRUE !(ep21 == 0) [L278] int node2____CPAchecker_TMP_0; [L279] COND TRUE max2 != nomsg [L281] COND TRUE p21_new == nomsg [L283] node2____CPAchecker_TMP_0 = max2 [L285] p21_new = node2____CPAchecker_TMP_0 [L287] COND FALSE !(!(ep23 == 0)) [L298] mode2 = 1 [L300] COND FALSE !(!(mode3 == 0)) [L306] COND TRUE ((int)r3) < 2 [L308] COND FALSE !(!(ep31 == 0)) [L319] COND TRUE !(ep32 == 0) [L321] int node3____CPAchecker_TMP_1; [L322] COND TRUE max3 != nomsg [L324] COND TRUE p32_new == nomsg [L326] node3____CPAchecker_TMP_1 = max3 [L328] p32_new = node3____CPAchecker_TMP_1 [L330] mode3 = 1 [L331] p12_old = p12_new [L332] p12_new = nomsg [L333] p13_old = p13_new [L334] p13_new = nomsg [L335] p21_old = p21_new [L336] p21_new = nomsg [L337] p23_old = p23_new [L338] p23_new = nomsg [L339] p31_old = p31_new [L340] p31_new = nomsg [L341] p32_old = p32_new [L342] p32_new = nomsg [L344] int check__tmp; [L345] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L347] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L349] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L351] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L353] COND FALSE !(((int)r1) >= 2) [L359] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) == 0 [L361] COND TRUE ((int)r1) < 2 [L363] COND FALSE !(((int)r1) >= 2) [L369] COND TRUE ((((int)nl1) + ((int)nl2)) + ((int)nl3)) == 0 [L371] COND TRUE ((int)r1) < 2 [L373] check__tmp = 1 [L374] __return_1259 = check__tmp [L375] main__c1 = __return_1259 [L377] _Bool __tmp_1; [L378] __tmp_1 = main__c1 [L379] _Bool assert__arg; [L380] assert__arg = __tmp_1 [L381] COND FALSE !(assert__arg == 0) [L387] int main____CPAchecker_TMP_0 = main__i2; [L388] main__i2 = main__i2 + 1 [L389] COND TRUE main__i2 < 6 [L392] COND TRUE !(mode1 == 0) [L394] r1 = (char)(((int)r1) + 1) [L395] COND TRUE !(ep21 == 0) [L397] m1 = p21_old [L398] p21_old = nomsg [L399] COND FALSE !(((int)m1) > ((int)max1)) [L403] COND FALSE !(!(ep31 == 0)) [L411] COND TRUE ((int)r1) == 1 [L413] COND TRUE ((int)max1) == ((int)id1) [L415] st1 = 1 [L417] mode1 = 0 [L419] COND TRUE !(mode2 == 0) [L421] r2 = (char)(((int)r2) + 1) [L422] COND FALSE !(!(ep12 == 0)) [L430] COND TRUE !(ep32 == 0) [L432] m2 = p32_old [L433] p32_old = nomsg [L434] COND FALSE !(((int)m2) > ((int)max2)) [L438] COND FALSE !(((int)r2) == 2) [L444] mode2 = 0 [L446] COND TRUE !(mode3 == 0) [L448] r3 = (char)(((int)r3) + 1) [L449] COND TRUE !(ep13 == 0) [L451] m3 = p13_old [L452] p13_old = nomsg [L453] COND TRUE ((int)m3) > ((int)max3) [L455] max3 = m3 [L457] COND FALSE !(!(ep23 == 0)) [L465] COND FALSE !(((int)r3) == 2) [L471] mode3 = 0 [L472] p12_old = p12_new [L473] p12_new = nomsg [L474] p13_old = p13_new [L475] p13_new = nomsg [L476] p21_old = p21_new [L477] p21_new = nomsg [L478] p23_old = p23_new [L479] p23_new = nomsg [L480] p31_old = p31_new [L481] p31_new = nomsg [L482] p32_old = p32_new [L483] p32_new = nomsg [L485] int check__tmp; [L486] COND TRUE ((((int)st1) + ((int)st2)) + ((int)st3)) <= 1 [L488] COND TRUE (((int)st1) + ((int)nl1)) <= 1 [L490] COND TRUE (((int)st2) + ((int)nl2)) <= 1 [L492] COND TRUE (((int)st3) + ((int)nl3)) <= 1 [L494] COND FALSE !(((int)r1) >= 2) [L500] COND FALSE !(((((int)st1) + ((int)st2)) + ((int)st3)) == 0) [L1068] check__tmp = 0 [L518] __return_1378 = check__tmp [L519] main__c1 = __return_1378 [L520] __tmp_1379_0 = main____CPAchecker_TMP_0 [L522] main____CPAchecker_TMP_0 = __tmp_1379_0 [L524] _Bool __tmp_2; [L525] __tmp_2 = main__c1 [L526] _Bool assert__arg; [L527] assert__arg = __tmp_2 [L528] COND TRUE assert__arg == 0 [L530] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 163.5s, OverallIterations: 23, TraceHistogramMax: 1, AutomataDifference: 51.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9312 SDtfs, 12992 SDslu, 14053 SDs, 0 SdLazy, 14213 SolverSat, 242 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 25.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29149occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.0s AutomataMinimizationTime, 22 MinimizatonAttempts, 22709 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 97.2s InterpolantComputationTime, 2468 NumberOfCodeBlocks, 2468 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 2330 ConstructedInterpolants, 0 QuantifiedInterpolants, 1590392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...