/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=BIGGEST --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_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:16:22,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:16:22,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:16:22,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:16:22,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:16:22,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:16:22,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:16:22,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:16:22,536 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:16:22,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:16:22,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:16:22,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:16:22,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:16:22,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:16:22,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:16:22,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:16:22,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:16:22,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:16:22,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:16:22,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:16:22,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:16:22,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:16:22,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:16:22,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:16:22,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:16:22,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:16:22,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:16:22,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:16:22,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:16:22,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:16:22,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:16:22,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:16:22,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:16:22,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:16:22,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:16:22,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:16:22,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:16:22,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:16:22,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:16:22,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:16:22,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:16:22,592 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 [2020-10-12 20:16:22,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:16:22,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:16:22,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:16:22,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:16:22,615 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:16:22,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:16:22,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:16:22,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:16:22,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:16:22,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:16:22,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:16:22,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:16:22,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:16:22,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:16:22,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:16:22,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:16:22,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:16:22,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:16:22,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:16:22,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:16:22,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:16:22,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:16:22,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:16:22,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:16:22,620 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:16:22,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:16:22,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:16:22,960 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:16:22,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:16:22,962 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:16:22,962 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:16:23,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a36ce86/dc0876d56c614005830c65a321b1cc51/FLAG5864b7591 [2020-10-12 20:16:23,566 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:16:23,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:16:23,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a36ce86/dc0876d56c614005830c65a321b1cc51/FLAG5864b7591 [2020-10-12 20:16:23,886 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0a36ce86/dc0876d56c614005830c65a321b1cc51 [2020-10-12 20:16:23,895 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:16:23,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:16:23,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:16:23,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:16:23,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:16:23,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:16:23" (1/1) ... [2020-10-12 20:16:23,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1b4e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:23, skipping insertion in model container [2020-10-12 20:16:23,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:16:23" (1/1) ... [2020-10-12 20:16:23,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:16:23,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:16:24,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:16:24,561 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:16:24,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:16:25,006 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:16:25,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25 WrapperNode [2020-10-12 20:16:25,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:16:25,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:16:25,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:16:25,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:16:25,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (1/1) ... [2020-10-12 20:16:25,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:16:25,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:16:25,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:16:25,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:16:25,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (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 [2020-10-12 20:16:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:16:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:16:25,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:16:25,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:16:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:16:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:16:25,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:16:25,248 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:16:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:16:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:16:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:16:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:16:25,249 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:16:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:16:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:16:25,250 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:16:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:16:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:16:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:16:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:16:26,548 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:16:26,550 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:16:26,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:16:26 BoogieIcfgContainer [2020-10-12 20:16:26,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:16:26,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:16:26,571 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:16:26,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:16:26,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:16:23" (1/3) ... [2020-10-12 20:16:26,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16079756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:16:26, skipping insertion in model container [2020-10-12 20:16:26,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:16:25" (2/3) ... [2020-10-12 20:16:26,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16079756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:16:26, skipping insertion in model container [2020-10-12 20:16:26,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:16:26" (3/3) ... [2020-10-12 20:16:26,582 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-12 20:16:26,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:16:26,600 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:16:26,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:16:26,637 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:16:26,637 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:16:26,637 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:16:26,637 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:16:26,637 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:16:26,638 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:16:26,638 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:16:26,638 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:16:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states. [2020-10-12 20:16:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-12 20:16:26,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:26,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:26,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:26,689 INFO L82 PathProgramCache]: Analyzing trace with hash 996963792, now seen corresponding path program 1 times [2020-10-12 20:16:26,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:26,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607808748] [2020-10-12 20:16:26,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:27,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:28,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:29,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:30,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:32,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-12 20:16:32,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:16:32,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 20:16:32,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:32,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:32,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 20:16:32,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:16:32,722 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:16:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:32,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:32,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:32,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:32,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:32,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:16:32,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:32,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:32,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:32,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:32,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:32,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607808748] [2020-10-12 20:16:32,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:32,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:32,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593421621] [2020-10-12 20:16:32,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:32,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:32,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:32,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:32,842 INFO L87 Difference]: Start difference. First operand 342 states. Second operand 5 states. [2020-10-12 20:16:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:35,728 INFO L93 Difference]: Finished difference Result 975 states and 1716 transitions. [2020-10-12 20:16:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:16:35,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-12 20:16:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:35,753 INFO L225 Difference]: With dead ends: 975 [2020-10-12 20:16:35,754 INFO L226 Difference]: Without dead ends: 642 [2020-10-12 20:16:35,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:35,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2020-10-12 20:16:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 640. [2020-10-12 20:16:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2020-10-12 20:16:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 930 transitions. [2020-10-12 20:16:35,873 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 930 transitions. Word has length 157 [2020-10-12 20:16:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:35,901 INFO L479 AbstractCegarLoop]: Abstraction has 640 states and 930 transitions. [2020-10-12 20:16:35,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 930 transitions. [2020-10-12 20:16:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 20:16:35,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:35,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:35,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:16:35,909 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:35,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1671051855, now seen corresponding path program 1 times [2020-10-12 20:16:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:35,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672683707] [2020-10-12 20:16:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:35,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:37,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:37,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:40,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:40,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 20:16:40,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 20:16:40,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 20:16:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-12 20:16:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:41,390 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:16:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:41,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:41,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:41,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:41,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:16:41,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:41,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:41,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672683707] [2020-10-12 20:16:41,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:41,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:41,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664654637] [2020-10-12 20:16:41,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:41,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:41,531 INFO L87 Difference]: Start difference. First operand 640 states and 930 transitions. Second operand 5 states. [2020-10-12 20:16:44,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:44,393 INFO L93 Difference]: Finished difference Result 1859 states and 2695 transitions. [2020-10-12 20:16:44,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:44,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-12 20:16:44,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:44,402 INFO L225 Difference]: With dead ends: 1859 [2020-10-12 20:16:44,403 INFO L226 Difference]: Without dead ends: 1230 [2020-10-12 20:16:44,407 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 [2020-10-12 20:16:44,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-10-12 20:16:44,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1228. [2020-10-12 20:16:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1228 states. [2020-10-12 20:16:44,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1765 transitions. [2020-10-12 20:16:44,481 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1765 transitions. Word has length 158 [2020-10-12 20:16:44,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:44,481 INFO L479 AbstractCegarLoop]: Abstraction has 1228 states and 1765 transitions. [2020-10-12 20:16:44,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1765 transitions. [2020-10-12 20:16:44,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-12 20:16:44,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:44,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:44,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:16:44,487 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1016491218, now seen corresponding path program 1 times [2020-10-12 20:16:44,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:44,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704707679] [2020-10-12 20:16:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:44,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:44,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:49,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-12 20:16:49,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:16:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-12 20:16:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 20:16:49,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:16:49,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:16:49,919 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:16:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:49,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:49,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:49,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:49,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 20:16:49,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:49,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:49,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:49,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:50,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:50,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704707679] [2020-10-12 20:16:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:50,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:50,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039600490] [2020-10-12 20:16:50,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:50,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:50,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:50,010 INFO L87 Difference]: Start difference. First operand 1228 states and 1765 transitions. Second operand 5 states. [2020-10-12 20:16:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:51,603 INFO L93 Difference]: Finished difference Result 2092 states and 3015 transitions. [2020-10-12 20:16:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:51,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-12 20:16:51,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:51,610 INFO L225 Difference]: With dead ends: 2092 [2020-10-12 20:16:51,610 INFO L226 Difference]: Without dead ends: 942 [2020-10-12 20:16:51,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:16:51,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2020-10-12 20:16:51,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2020-10-12 20:16:51,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 942 states. [2020-10-12 20:16:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1348 transitions. [2020-10-12 20:16:51,663 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1348 transitions. Word has length 159 [2020-10-12 20:16:51,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:51,663 INFO L479 AbstractCegarLoop]: Abstraction has 942 states and 1348 transitions. [2020-10-12 20:16:51,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1348 transitions. [2020-10-12 20:16:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-12 20:16:51,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:51,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:51,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:16:51,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:51,668 INFO L82 PathProgramCache]: Analyzing trace with hash -624667687, now seen corresponding path program 1 times [2020-10-12 20:16:51,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:51,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400267904] [2020-10-12 20:16:51,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:51,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:51,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:51,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:56,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:56,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-12 20:16:56,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:16:56,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:16:56,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:16:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:16:56,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 20:16:56,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:57,031 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:16:57,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:16:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:57,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:57,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:16:57,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:16:57,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:16:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 20:16:57,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:16:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:16:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:16:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:16:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:16:57,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:16:57,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400267904] [2020-10-12 20:16:57,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:16:57,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:16:57,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029975524] [2020-10-12 20:16:57,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:16:57,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:16:57,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:16:57,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:16:57,160 INFO L87 Difference]: Start difference. First operand 942 states and 1348 transitions. Second operand 5 states. [2020-10-12 20:16:59,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:16:59,685 INFO L93 Difference]: Finished difference Result 2707 states and 3863 transitions. [2020-10-12 20:16:59,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:16:59,685 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-12 20:16:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:16:59,695 INFO L225 Difference]: With dead ends: 2707 [2020-10-12 20:16:59,695 INFO L226 Difference]: Without dead ends: 1804 [2020-10-12 20:16:59,698 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 [2020-10-12 20:16:59,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-10-12 20:16:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1802. [2020-10-12 20:16:59,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-12 20:16:59,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2548 transitions. [2020-10-12 20:16:59,836 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2548 transitions. Word has length 162 [2020-10-12 20:16:59,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:16:59,837 INFO L479 AbstractCegarLoop]: Abstraction has 1802 states and 2548 transitions. [2020-10-12 20:16:59,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:16:59,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2548 transitions. [2020-10-12 20:16:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-12 20:16:59,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:16:59,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:16:59,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:16:59,844 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:16:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:16:59,844 INFO L82 PathProgramCache]: Analyzing trace with hash -11629673, now seen corresponding path program 1 times [2020-10-12 20:16:59,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:16:59,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179653259] [2020-10-12 20:16:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:16:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:16:59,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:16:59,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:01,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:04,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:04,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-12 20:17:04,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 20:17:04,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 20:17:04,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:04,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-12 20:17:04,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:05,234 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:05,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:05,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:05,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:05,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:05,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:17:05,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:05,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:05,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:05,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:17:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:05,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179653259] [2020-10-12 20:17:05,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:05,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:05,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025279566] [2020-10-12 20:17:05,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:05,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:05,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:05,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:05,363 INFO L87 Difference]: Start difference. First operand 1802 states and 2548 transitions. Second operand 5 states. [2020-10-12 20:17:08,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:08,040 INFO L93 Difference]: Finished difference Result 5189 states and 7301 transitions. [2020-10-12 20:17:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:08,041 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-12 20:17:08,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:08,056 INFO L225 Difference]: With dead ends: 5189 [2020-10-12 20:17:08,057 INFO L226 Difference]: Without dead ends: 3451 [2020-10-12 20:17:08,061 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 [2020-10-12 20:17:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2020-10-12 20:17:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3449. [2020-10-12 20:17:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-10-12 20:17:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4799 transitions. [2020-10-12 20:17:08,233 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4799 transitions. Word has length 163 [2020-10-12 20:17:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:08,234 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 4799 transitions. [2020-10-12 20:17:08,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4799 transitions. [2020-10-12 20:17:08,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 20:17:08,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:08,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:08,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:17:08,243 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:08,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1323791976, now seen corresponding path program 1 times [2020-10-12 20:17:08,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:08,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890578951] [2020-10-12 20:17:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:08,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:08,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:08,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:08,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:09,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:13,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 20:17:13,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 20:17:13,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:17:13,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:17:13,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 20:17:13,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:13,608 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:13,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:13,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:13,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:13,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:13,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:17:13,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:13,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:13,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:13,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:13,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890578951] [2020-10-12 20:17:13,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:13,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:13,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266859166] [2020-10-12 20:17:13,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:13,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:13,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:13,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:13,691 INFO L87 Difference]: Start difference. First operand 3449 states and 4799 transitions. Second operand 5 states. [2020-10-12 20:17:16,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:16,656 INFO L93 Difference]: Finished difference Result 8683 states and 12108 transitions. [2020-10-12 20:17:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:16,659 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-12 20:17:16,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:16,690 INFO L225 Difference]: With dead ends: 8683 [2020-10-12 20:17:16,690 INFO L226 Difference]: Without dead ends: 5603 [2020-10-12 20:17:16,700 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 [2020-10-12 20:17:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5603 states. [2020-10-12 20:17:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5603 to 5600. [2020-10-12 20:17:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5600 states. [2020-10-12 20:17:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 7677 transitions. [2020-10-12 20:17:17,079 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 7677 transitions. Word has length 164 [2020-10-12 20:17:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:17,079 INFO L479 AbstractCegarLoop]: Abstraction has 5600 states and 7677 transitions. [2020-10-12 20:17:17,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 7677 transitions. [2020-10-12 20:17:17,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-12 20:17:17,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:17,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:17,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:17:17,092 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:17,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:17,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1177546004, now seen corresponding path program 1 times [2020-10-12 20:17:17,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:17,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865709708] [2020-10-12 20:17:17,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:17,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:22,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:22,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-12 20:17:22,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:17:22,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-12 20:17:22,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 20:17:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:22,431 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:22,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:22,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:22,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:22,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:22,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:22,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 20:17:22,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:22,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:22,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:22,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:22,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865709708] [2020-10-12 20:17:22,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:22,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:22,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125812523] [2020-10-12 20:17:22,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:22,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:22,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:22,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:22,499 INFO L87 Difference]: Start difference. First operand 5600 states and 7677 transitions. Second operand 5 states. [2020-10-12 20:17:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:24,060 INFO L93 Difference]: Finished difference Result 9940 states and 13653 transitions. [2020-10-12 20:17:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:24,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-12 20:17:24,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:24,081 INFO L225 Difference]: With dead ends: 9940 [2020-10-12 20:17:24,082 INFO L226 Difference]: Without dead ends: 4556 [2020-10-12 20:17:24,092 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 [2020-10-12 20:17:24,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2020-10-12 20:17:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4556. [2020-10-12 20:17:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4556 states. [2020-10-12 20:17:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 6232 transitions. [2020-10-12 20:17:24,319 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 6232 transitions. Word has length 165 [2020-10-12 20:17:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:24,320 INFO L479 AbstractCegarLoop]: Abstraction has 4556 states and 6232 transitions. [2020-10-12 20:17:24,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 6232 transitions. [2020-10-12 20:17:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-12 20:17:24,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:24,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:24,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:17:24,330 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:24,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1311065587, now seen corresponding path program 1 times [2020-10-12 20:17:24,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:24,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930075887] [2020-10-12 20:17:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:24,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:24,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:24,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:25,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:29,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-12 20:17:29,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:17:29,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:17:29,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 20:17:29,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 20:17:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:29,698 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:29,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:29,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:29,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:29,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930075887] [2020-10-12 20:17:29,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:29,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:29,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040982280] [2020-10-12 20:17:29,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:29,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:29,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:29,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:29,777 INFO L87 Difference]: Start difference. First operand 4556 states and 6232 transitions. Second operand 5 states. [2020-10-12 20:17:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:31,250 INFO L93 Difference]: Finished difference Result 8120 states and 11142 transitions. [2020-10-12 20:17:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:31,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-12 20:17:31,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:31,263 INFO L225 Difference]: With dead ends: 8120 [2020-10-12 20:17:31,264 INFO L226 Difference]: Without dead ends: 3744 [2020-10-12 20:17:31,273 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 [2020-10-12 20:17:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2020-10-12 20:17:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3744. [2020-10-12 20:17:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3744 states. [2020-10-12 20:17:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5112 transitions. [2020-10-12 20:17:31,453 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5112 transitions. Word has length 169 [2020-10-12 20:17:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:31,455 INFO L479 AbstractCegarLoop]: Abstraction has 3744 states and 5112 transitions. [2020-10-12 20:17:31,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5112 transitions. [2020-10-12 20:17:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:17:31,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:31,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:31,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:17:31,463 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:31,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:31,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1843979991, now seen corresponding path program 1 times [2020-10-12 20:17:31,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:31,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425516809] [2020-10-12 20:17:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:17:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 20:17:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 20:17:36,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:17:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:17:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 20:17:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:36,887 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:36,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:36,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:36,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:36,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:36,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 20:17:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:17:36,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:17:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:17:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:37,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425516809] [2020-10-12 20:17:37,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:37,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:17:37,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818659537] [2020-10-12 20:17:37,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:17:37,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:37,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:17:37,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:17:37,057 INFO L87 Difference]: Start difference. First operand 3744 states and 5112 transitions. Second operand 9 states. [2020-10-12 20:17:37,290 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 20:17:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:39,689 INFO L93 Difference]: Finished difference Result 12068 states and 17138 transitions. [2020-10-12 20:17:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:17:39,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 170 [2020-10-12 20:17:39,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:39,723 INFO L225 Difference]: With dead ends: 12068 [2020-10-12 20:17:39,723 INFO L226 Difference]: Without dead ends: 9167 [2020-10-12 20:17:39,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:17:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9167 states. [2020-10-12 20:17:40,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9167 to 5576. [2020-10-12 20:17:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5576 states. [2020-10-12 20:17:40,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 7577 transitions. [2020-10-12 20:17:40,090 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 7577 transitions. Word has length 170 [2020-10-12 20:17:40,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:40,090 INFO L479 AbstractCegarLoop]: Abstraction has 5576 states and 7577 transitions. [2020-10-12 20:17:40,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:17:40,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 7577 transitions. [2020-10-12 20:17:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:17:40,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:40,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:40,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:17:40,101 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:40,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:40,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1359526591, now seen corresponding path program 1 times [2020-10-12 20:17:40,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:40,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787605757] [2020-10-12 20:17:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:40,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:40,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:41,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:42,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:42,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:43,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:43,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:44,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:44,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:44,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:17:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:17:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 20:17:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 20:17:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-12 20:17:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 20:17:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:45,492 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:45,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:45,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:45,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:45,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:45,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:45,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787605757] [2020-10-12 20:17:45,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:45,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 20:17:45,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71397628] [2020-10-12 20:17:45,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 20:17:45,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:45,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 20:17:45,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 20:17:45,545 INFO L87 Difference]: Start difference. First operand 5576 states and 7577 transitions. Second operand 10 states. [2020-10-12 20:17:45,844 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-12 20:17:49,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:49,728 INFO L93 Difference]: Finished difference Result 29659 states and 41807 transitions. [2020-10-12 20:17:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 20:17:49,729 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 170 [2020-10-12 20:17:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:49,805 INFO L225 Difference]: With dead ends: 29659 [2020-10-12 20:17:49,805 INFO L226 Difference]: Without dead ends: 25791 [2020-10-12 20:17:49,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:17:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25791 states. [2020-10-12 20:17:50,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25791 to 15520. [2020-10-12 20:17:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15520 states. [2020-10-12 20:17:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15520 states to 15520 states and 21658 transitions. [2020-10-12 20:17:50,906 INFO L78 Accepts]: Start accepts. Automaton has 15520 states and 21658 transitions. Word has length 170 [2020-10-12 20:17:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:50,907 INFO L479 AbstractCegarLoop]: Abstraction has 15520 states and 21658 transitions. [2020-10-12 20:17:50,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 20:17:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 15520 states and 21658 transitions. [2020-10-12 20:17:50,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 20:17:50,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:50,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:50,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 20:17:50,923 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:50,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:50,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1574113959, now seen corresponding path program 1 times [2020-10-12 20:17:50,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:50,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093753114] [2020-10-12 20:17:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:51,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:52,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:55,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 20:17:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 20:17:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:56,237 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:17:56,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:17:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:56,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:17:56,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:17:56,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:17:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:17:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:17:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:17:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:17:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:17:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:17:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:17:56,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093753114] [2020-10-12 20:17:56,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:17:56,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:17:56,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017232054] [2020-10-12 20:17:56,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:17:56,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:17:56,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:17:56,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:17:56,299 INFO L87 Difference]: Start difference. First operand 15520 states and 21658 transitions. Second operand 5 states. [2020-10-12 20:17:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:17:58,393 INFO L93 Difference]: Finished difference Result 28069 states and 39331 transitions. [2020-10-12 20:17:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:17:58,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-12 20:17:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:17:58,435 INFO L225 Difference]: With dead ends: 28069 [2020-10-12 20:17:58,436 INFO L226 Difference]: Without dead ends: 15520 [2020-10-12 20:17:58,459 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 [2020-10-12 20:17:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15520 states. [2020-10-12 20:17:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15520 to 15520. [2020-10-12 20:17:59,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15520 states. [2020-10-12 20:17:59,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15520 states to 15520 states and 21653 transitions. [2020-10-12 20:17:59,297 INFO L78 Accepts]: Start accepts. Automaton has 15520 states and 21653 transitions. Word has length 170 [2020-10-12 20:17:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:17:59,298 INFO L479 AbstractCegarLoop]: Abstraction has 15520 states and 21653 transitions. [2020-10-12 20:17:59,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:17:59,298 INFO L276 IsEmpty]: Start isEmpty. Operand 15520 states and 21653 transitions. [2020-10-12 20:17:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-12 20:17:59,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:17:59,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:17:59,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 20:17:59,310 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:17:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:17:59,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1772780980, now seen corresponding path program 1 times [2020-10-12 20:17:59,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:17:59,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872838925] [2020-10-12 20:17:59,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:17:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:17:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:17:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:18:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:04,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 20:18:04,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:04,588 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:18:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:04,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:04,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872838925] [2020-10-12 20:18:04,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:04,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:18:04,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97841744] [2020-10-12 20:18:04,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:18:04,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:04,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:18:04,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:18:04,635 INFO L87 Difference]: Start difference. First operand 15520 states and 21653 transitions. Second operand 5 states. [2020-10-12 20:18:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:07,786 INFO L93 Difference]: Finished difference Result 35550 states and 49572 transitions. [2020-10-12 20:18:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:18:07,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-12 20:18:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:07,832 INFO L225 Difference]: With dead ends: 35550 [2020-10-12 20:18:07,832 INFO L226 Difference]: Without dead ends: 20512 [2020-10-12 20:18:07,864 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 [2020-10-12 20:18:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20512 states. [2020-10-12 20:18:09,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20512 to 20507. [2020-10-12 20:18:09,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20507 states. [2020-10-12 20:18:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20507 states to 20507 states and 28086 transitions. [2020-10-12 20:18:09,926 INFO L78 Accepts]: Start accepts. Automaton has 20507 states and 28086 transitions. Word has length 171 [2020-10-12 20:18:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:09,926 INFO L479 AbstractCegarLoop]: Abstraction has 20507 states and 28086 transitions. [2020-10-12 20:18:09,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:18:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 20507 states and 28086 transitions. [2020-10-12 20:18:09,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:18:09,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:09,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:09,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 20:18:09,941 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:09,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2085124230, now seen corresponding path program 1 times [2020-10-12 20:18:09,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:09,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477417511] [2020-10-12 20:18:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:11,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:14,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:18:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 20:18:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:15,270 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:18:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:15,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:15,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:15,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:18:15,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:15,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477417511] [2020-10-12 20:18:15,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:15,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 20:18:15,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193037824] [2020-10-12 20:18:15,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 20:18:15,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 20:18:15,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 20:18:15,417 INFO L87 Difference]: Start difference. First operand 20507 states and 28086 transitions. Second operand 9 states. [2020-10-12 20:18:15,690 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-12 20:18:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:20,041 INFO L93 Difference]: Finished difference Result 58140 states and 81149 transitions. [2020-10-12 20:18:20,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 20:18:20,041 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 175 [2020-10-12 20:18:20,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:20,101 INFO L225 Difference]: With dead ends: 58140 [2020-10-12 20:18:20,101 INFO L226 Difference]: Without dead ends: 41953 [2020-10-12 20:18:20,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2020-10-12 20:18:20,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41953 states. [2020-10-12 20:18:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41953 to 23123. [2020-10-12 20:18:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23123 states. [2020-10-12 20:18:21,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23123 states to 23123 states and 31562 transitions. [2020-10-12 20:18:21,620 INFO L78 Accepts]: Start accepts. Automaton has 23123 states and 31562 transitions. Word has length 175 [2020-10-12 20:18:21,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:21,620 INFO L479 AbstractCegarLoop]: Abstraction has 23123 states and 31562 transitions. [2020-10-12 20:18:21,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 20:18:21,621 INFO L276 IsEmpty]: Start isEmpty. Operand 23123 states and 31562 transitions. [2020-10-12 20:18:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-12 20:18:21,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:21,634 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:21,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 20:18:21,634 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:21,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:21,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1977599464, now seen corresponding path program 1 times [2020-10-12 20:18:21,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:21,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932359640] [2020-10-12 20:18:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:22,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1982 [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:18:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 20:18:23,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 20:18:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:23,867 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:18:23,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:23,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:23,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:23,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932359640] [2020-10-12 20:18:23,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:23,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:18:23,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570038864] [2020-10-12 20:18:23,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:18:23,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:23,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:18:23,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:23,904 INFO L87 Difference]: Start difference. First operand 23123 states and 31562 transitions. Second operand 4 states. [2020-10-12 20:18:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:27,736 INFO L93 Difference]: Finished difference Result 50340 states and 70302 transitions. [2020-10-12 20:18:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:18:27,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 175 [2020-10-12 20:18:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:27,768 INFO L225 Difference]: With dead ends: 50340 [2020-10-12 20:18:27,769 INFO L226 Difference]: Without dead ends: 28955 [2020-10-12 20:18:27,785 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 [2020-10-12 20:18:27,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28955 states. [2020-10-12 20:18:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28955 to 27847. [2020-10-12 20:18:29,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27847 states. [2020-10-12 20:18:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27847 states to 27847 states and 39180 transitions. [2020-10-12 20:18:29,567 INFO L78 Accepts]: Start accepts. Automaton has 27847 states and 39180 transitions. Word has length 175 [2020-10-12 20:18:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:29,568 INFO L479 AbstractCegarLoop]: Abstraction has 27847 states and 39180 transitions. [2020-10-12 20:18:29,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:18:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 27847 states and 39180 transitions. [2020-10-12 20:18:29,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-12 20:18:29,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:29,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:29,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 20:18:29,581 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:29,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:29,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2115902420, now seen corresponding path program 1 times [2020-10-12 20:18:29,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:29,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675254094] [2020-10-12 20:18:29,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 922 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 20:18:30,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:30,768 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:18:30,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:30,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 20:18:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:30,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:30,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675254094] [2020-10-12 20:18:30,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:30,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:18:30,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303280369] [2020-10-12 20:18:30,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:18:30,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:30,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:18:30,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:18:30,804 INFO L87 Difference]: Start difference. First operand 27847 states and 39180 transitions. Second operand 4 states. [2020-10-12 20:18:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:18:35,079 INFO L93 Difference]: Finished difference Result 60650 states and 86830 transitions. [2020-10-12 20:18:35,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 20:18:35,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2020-10-12 20:18:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:18:35,126 INFO L225 Difference]: With dead ends: 60650 [2020-10-12 20:18:35,126 INFO L226 Difference]: Without dead ends: 34923 [2020-10-12 20:18:35,161 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 [2020-10-12 20:18:35,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34923 states. [2020-10-12 20:18:38,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34923 to 32754. [2020-10-12 20:18:38,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32754 states. [2020-10-12 20:18:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32754 states to 32754 states and 46990 transitions. [2020-10-12 20:18:38,472 INFO L78 Accepts]: Start accepts. Automaton has 32754 states and 46990 transitions. Word has length 178 [2020-10-12 20:18:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:18:38,472 INFO L479 AbstractCegarLoop]: Abstraction has 32754 states and 46990 transitions. [2020-10-12 20:18:38,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:18:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 32754 states and 46990 transitions. [2020-10-12 20:18:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 20:18:38,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:18:38,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:18:38,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 20:18:38,479 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:18:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:18:38,480 INFO L82 PathProgramCache]: Analyzing trace with hash 34676576, now seen corresponding path program 1 times [2020-10-12 20:18:38,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:18:38,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113001980] [2020-10-12 20:18:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:18:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:38,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:40,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 20:18:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:18:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 20:18:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 20:18:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:18:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 20:18:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:44,082 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:18:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:18:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:18:44,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:18:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:18:44,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:18:44,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:18:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:18:44,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113001980] [2020-10-12 20:18:44,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:18:44,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 20:18:44,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79638344] [2020-10-12 20:18:44,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 20:18:44,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:18:44,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 20:18:44,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-12 20:18:44,140 INFO L87 Difference]: Start difference. First operand 32754 states and 46990 transitions. Second operand 15 states. [2020-10-12 20:18:44,388 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-12 20:19:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:01,357 INFO L93 Difference]: Finished difference Result 148385 states and 213927 transitions. [2020-10-12 20:19:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 20:19:01,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 181 [2020-10-12 20:19:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:01,541 INFO L225 Difference]: With dead ends: 148385 [2020-10-12 20:19:01,541 INFO L226 Difference]: Without dead ends: 131421 [2020-10-12 20:19:01,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2020-10-12 20:19:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131421 states. [2020-10-12 20:19:05,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131421 to 33411. [2020-10-12 20:19:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33411 states. [2020-10-12 20:19:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33411 states to 33411 states and 47754 transitions. [2020-10-12 20:19:05,102 INFO L78 Accepts]: Start accepts. Automaton has 33411 states and 47754 transitions. Word has length 181 [2020-10-12 20:19:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:05,102 INFO L479 AbstractCegarLoop]: Abstraction has 33411 states and 47754 transitions. [2020-10-12 20:19:05,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 20:19:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand 33411 states and 47754 transitions. [2020-10-12 20:19:05,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 20:19:05,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:05,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:05,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 20:19:05,109 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:05,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:05,110 INFO L82 PathProgramCache]: Analyzing trace with hash -479133468, now seen corresponding path program 1 times [2020-10-12 20:19:05,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:05,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564874408] [2020-10-12 20:19:05,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:05,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:05,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:07,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 20:19:07,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 20:19:07,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2550 [2020-10-12 20:19:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:19:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 20:19:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 20:19:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:08,080 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:19:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:08,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:08,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:08,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:08,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:08,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:19:08,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:19:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:08,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 20:19:08,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:08,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:08,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564874408] [2020-10-12 20:19:08,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:08,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:19:08,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751958916] [2020-10-12 20:19:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:19:08,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:19:08,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:08,135 INFO L87 Difference]: Start difference. First operand 33411 states and 47754 transitions. Second operand 6 states. [2020-10-12 20:19:08,380 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-12 20:19:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:16,254 INFO L93 Difference]: Finished difference Result 95320 states and 137606 transitions. [2020-10-12 20:19:16,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 20:19:16,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2020-10-12 20:19:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:16,341 INFO L225 Difference]: With dead ends: 95320 [2020-10-12 20:19:16,341 INFO L226 Difference]: Without dead ends: 62914 [2020-10-12 20:19:16,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-12 20:19:16,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62914 states. [2020-10-12 20:19:22,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62914 to 62912. [2020-10-12 20:19:22,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62912 states. [2020-10-12 20:19:22,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62912 states to 62912 states and 90414 transitions. [2020-10-12 20:19:22,341 INFO L78 Accepts]: Start accepts. Automaton has 62912 states and 90414 transitions. Word has length 181 [2020-10-12 20:19:22,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:22,341 INFO L479 AbstractCegarLoop]: Abstraction has 62912 states and 90414 transitions. [2020-10-12 20:19:22,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 20:19:22,342 INFO L276 IsEmpty]: Start isEmpty. Operand 62912 states and 90414 transitions. [2020-10-12 20:19:22,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 20:19:22,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:22,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:22,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 20:19:22,353 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:22,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:22,353 INFO L82 PathProgramCache]: Analyzing trace with hash 739762757, now seen corresponding path program 1 times [2020-10-12 20:19:22,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:22,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779721090] [2020-10-12 20:19:22,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:22,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:22,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 20:19:22,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-12 20:19:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:23,164 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:19:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:23,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779721090] [2020-10-12 20:19:23,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:23,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 20:19:23,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115243901] [2020-10-12 20:19:23,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 20:19:23,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:23,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 20:19:23,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 20:19:23,208 INFO L87 Difference]: Start difference. First operand 62912 states and 90414 transitions. Second operand 4 states. [2020-10-12 20:19:23,443 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-12 20:19:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:19:34,173 INFO L93 Difference]: Finished difference Result 142736 states and 208646 transitions. [2020-10-12 20:19:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:19:34,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2020-10-12 20:19:34,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:19:34,310 INFO L225 Difference]: With dead ends: 142736 [2020-10-12 20:19:34,310 INFO L226 Difference]: Without dead ends: 91928 [2020-10-12 20:19:34,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:19:34,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91928 states. [2020-10-12 20:19:45,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91928 to 91926. [2020-10-12 20:19:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91926 states. [2020-10-12 20:19:45,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91926 states to 91926 states and 132258 transitions. [2020-10-12 20:19:45,370 INFO L78 Accepts]: Start accepts. Automaton has 91926 states and 132258 transitions. Word has length 181 [2020-10-12 20:19:45,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:19:45,370 INFO L479 AbstractCegarLoop]: Abstraction has 91926 states and 132258 transitions. [2020-10-12 20:19:45,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 20:19:45,370 INFO L276 IsEmpty]: Start isEmpty. Operand 91926 states and 132258 transitions. [2020-10-12 20:19:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-12 20:19:45,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:19:45,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:19:45,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 20:19:45,388 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:19:45,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:19:45,388 INFO L82 PathProgramCache]: Analyzing trace with hash 443689549, now seen corresponding path program 1 times [2020-10-12 20:19:45,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:19:45,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91900806] [2020-10-12 20:19:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:19:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:45,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:45,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-12 20:19:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 20:19:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-10-12 20:19:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 20:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 20:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-12 20:19:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:49,609 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-12 20:19:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:19:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:19:49,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:19:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:19:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:19:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:19:49,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91900806] [2020-10-12 20:19:49,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:19:49,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 20:19:49,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004925418] [2020-10-12 20:19:49,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 20:19:49,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:19:49,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 20:19:49,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:19:49,659 INFO L87 Difference]: Start difference. First operand 91926 states and 132258 transitions. Second operand 6 states. [2020-10-12 20:19:49,924 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188