/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:02:35,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:02:35,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:02:35,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:02:35,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:02:35,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:02:35,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:02:35,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:02:35,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:02:35,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:02:35,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:02:35,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:02:35,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:02:35,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:02:35,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:02:35,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:02:35,727 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:02:35,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:02:35,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:02:35,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:02:35,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:02:35,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:02:35,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:02:35,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:02:35,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:02:35,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:02:35,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:02:35,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:02:35,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:02:35,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:02:35,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:02:35,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:02:35,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:02:35,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:02:35,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:02:35,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:02:35,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:02:35,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:02:35,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:02:35,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:02:35,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:02:35,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 14:02:35,792 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:02:35,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:02:35,794 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:02:35,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:02:35,794 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:02:35,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:02:35,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:02:35,794 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:02:35,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:02:35,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:02:35,796 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:02:35,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:02:35,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:02:35,797 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:02:35,797 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:02:35,797 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:02:35,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:02:35,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:02:35,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:02:35,798 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:02:35,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:02:35,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:35,798 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:02:35,798 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:02:35,799 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 14:02:36,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:02:36,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:02:36,098 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:02:36,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:02:36,100 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:02:36,101 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-13 14:02:36,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f265acab1/2d9cff8daffb45caab87894f4502c2cc/FLAG86709a132 [2020-10-13 14:02:36,756 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:02:36,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-13 14:02:36,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f265acab1/2d9cff8daffb45caab87894f4502c2cc/FLAG86709a132 [2020-10-13 14:02:36,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f265acab1/2d9cff8daffb45caab87894f4502c2cc [2020-10-13 14:02:36,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:02:36,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:02:36,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:36,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:02:36,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:02:36,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:36" (1/1) ... [2020-10-13 14:02:36,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b50498e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:36, skipping insertion in model container [2020-10-13 14:02:36,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:36" (1/1) ... [2020-10-13 14:02:36,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:02:37,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:02:38,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:38,257 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:02:38,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:02:38,852 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:02:38,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38 WrapperNode [2020-10-13 14:02:38,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:02:38,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:02:38,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:02:38,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:02:38,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:38,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:39,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:39,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:39,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... [2020-10-13 14:02:39,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:02:39,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:02:39,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:02:39,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:02:39,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:02:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:02:39,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:02:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:02:39,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:02:39,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:02:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:02:39,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:02:39,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:02:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:02:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:02:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:02:39,181 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:02:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:02:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:02:39,182 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:02:39,183 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:02:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:02:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:02:39,184 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:02:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:02:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:02:39,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:42,295 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:42,296 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:42,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:42 BoogieIcfgContainer [2020-10-13 14:02:42,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:42,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:42,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:42,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:42,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:36" (1/3) ... [2020-10-13 14:02:42,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56416ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:42, skipping insertion in model container [2020-10-13 14:02:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:38" (2/3) ... [2020-10-13 14:02:42,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56416ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:42, skipping insertion in model container [2020-10-13 14:02:42,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:42" (3/3) ... [2020-10-13 14:02:42,329 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-13 14:02:42,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:42,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 14:02:42,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 14:02:42,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:42,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:42,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:42,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:42,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:42,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:42,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:42,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:42,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states. [2020-10-13 14:02:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 14:02:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:42,541 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] [2020-10-13 14:02:42,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 236503625, now seen corresponding path program 1 times [2020-10-13 14:02:42,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:42,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205525782] [2020-10-13 14:02:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:43,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:43,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:48,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 14:02:48,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 14:02:48,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 14:02:48,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-13 14:02:48,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:02:48,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:02:48,828 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:48,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:48,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 14:02:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:48,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:48,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205525782] [2020-10-13 14:02:48,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:48,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:48,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943447973] [2020-10-13 14:02:48,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:48,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:48,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:48,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:48,959 INFO L87 Difference]: Start difference. First operand 1126 states. Second operand 5 states. [2020-10-13 14:02:54,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:54,703 INFO L93 Difference]: Finished difference Result 1930 states and 3314 transitions. [2020-10-13 14:02:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:54,706 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-13 14:02:54,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:54,729 INFO L225 Difference]: With dead ends: 1930 [2020-10-13 14:02:54,730 INFO L226 Difference]: Without dead ends: 1122 [2020-10-13 14:02:54,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:54,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2020-10-13 14:02:54,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1122. [2020-10-13 14:02:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1122 states. [2020-10-13 14:02:54,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1122 states to 1122 states and 1926 transitions. [2020-10-13 14:02:54,841 INFO L78 Accepts]: Start accepts. Automaton has 1122 states and 1926 transitions. Word has length 154 [2020-10-13 14:02:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:54,842 INFO L479 AbstractCegarLoop]: Abstraction has 1122 states and 1926 transitions. [2020-10-13 14:02:54,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1122 states and 1926 transitions. [2020-10-13 14:02:54,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 14:02:54,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:54,847 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] [2020-10-13 14:02:54,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:02:54,847 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:54,848 INFO L82 PathProgramCache]: Analyzing trace with hash -359209495, now seen corresponding path program 1 times [2020-10-13 14:02:54,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:54,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474343721] [2020-10-13 14:02:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:55,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:58,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:59,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 14:02:59,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:02:59,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 14:02:59,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:59,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-13 14:02:59,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:02:59,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:00,462 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 14:03:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:00,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:00,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474343721] [2020-10-13 14:03:00,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:00,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:00,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146368031] [2020-10-13 14:03:00,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:00,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:00,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:00,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:00,554 INFO L87 Difference]: Start difference. First operand 1122 states and 1926 transitions. Second operand 4 states. [2020-10-13 14:03:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:07,000 INFO L93 Difference]: Finished difference Result 2663 states and 4524 transitions. [2020-10-13 14:03:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:07,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-13 14:03:07,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:07,019 INFO L225 Difference]: With dead ends: 2663 [2020-10-13 14:03:07,019 INFO L226 Difference]: Without dead ends: 1858 [2020-10-13 14:03:07,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2020-10-13 14:03:07,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1841. [2020-10-13 14:03:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2020-10-13 14:03:07,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 3103 transitions. [2020-10-13 14:03:07,126 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 3103 transitions. Word has length 162 [2020-10-13 14:03:07,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:07,128 INFO L479 AbstractCegarLoop]: Abstraction has 1841 states and 3103 transitions. [2020-10-13 14:03:07,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:07,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 3103 transitions. [2020-10-13 14:03:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 14:03:07,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:07,141 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] [2020-10-13 14:03:07,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:03:07,142 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:07,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:07,143 INFO L82 PathProgramCache]: Analyzing trace with hash -2133722103, now seen corresponding path program 1 times [2020-10-13 14:03:07,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:07,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030707570] [2020-10-13 14:03:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:07,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:08,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:10,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:12,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-13 14:03:12,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:03:12,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 14:03:12,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:12,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-13 14:03:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:03:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:12,905 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:12,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 14:03:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:12,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:13,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:13,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030707570] [2020-10-13 14:03:13,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:13,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:13,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445713554] [2020-10-13 14:03:13,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:13,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:13,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:13,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:13,055 INFO L87 Difference]: Start difference. First operand 1841 states and 3103 transitions. Second operand 5 states. [2020-10-13 14:03:18,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:18,818 INFO L93 Difference]: Finished difference Result 3024 states and 5083 transitions. [2020-10-13 14:03:18,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:18,819 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-10-13 14:03:18,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:18,830 INFO L225 Difference]: With dead ends: 3024 [2020-10-13 14:03:18,831 INFO L226 Difference]: Without dead ends: 1841 [2020-10-13 14:03:18,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:18,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-10-13 14:03:18,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1841. [2020-10-13 14:03:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2020-10-13 14:03:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 3089 transitions. [2020-10-13 14:03:18,886 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 3089 transitions. Word has length 164 [2020-10-13 14:03:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:18,886 INFO L479 AbstractCegarLoop]: Abstraction has 1841 states and 3089 transitions. [2020-10-13 14:03:18,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 3089 transitions. [2020-10-13 14:03:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 14:03:18,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:18,891 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] [2020-10-13 14:03:18,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:03:18,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:18,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:18,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2015211826, now seen corresponding path program 1 times [2020-10-13 14:03:18,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:18,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378839161] [2020-10-13 14:03:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:20,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:22,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:23,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-13 14:03:23,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-13 14:03:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 14:03:23,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-13 14:03:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:03:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:24,404 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:24,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:24,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 14:03:24,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:24,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:24,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:24,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378839161] [2020-10-13 14:03:24,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:24,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:24,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961502965] [2020-10-13 14:03:24,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:24,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:24,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:24,494 INFO L87 Difference]: Start difference. First operand 1841 states and 3089 transitions. Second operand 5 states. [2020-10-13 14:03:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:30,673 INFO L93 Difference]: Finished difference Result 3490 states and 5824 transitions. [2020-10-13 14:03:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:03:30,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-13 14:03:30,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:30,689 INFO L225 Difference]: With dead ends: 3490 [2020-10-13 14:03:30,689 INFO L226 Difference]: Without dead ends: 1841 [2020-10-13 14:03:30,692 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 [2020-10-13 14:03:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2020-10-13 14:03:30,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1841. [2020-10-13 14:03:30,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2020-10-13 14:03:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 3047 transitions. [2020-10-13 14:03:30,752 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 3047 transitions. Word has length 174 [2020-10-13 14:03:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:30,752 INFO L479 AbstractCegarLoop]: Abstraction has 1841 states and 3047 transitions. [2020-10-13 14:03:30,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:30,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 3047 transitions. [2020-10-13 14:03:30,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-13 14:03:30,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:30,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:30,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:03:30,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:30,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:30,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1179621567, now seen corresponding path program 1 times [2020-10-13 14:03:30,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:30,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277945402] [2020-10-13 14:03:30,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:31,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:33,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:33,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:33,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:34,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:35,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-13 14:03:35,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-13 14:03:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:03:35,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 14:03:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:03:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:36,241 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:36,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:36,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:36,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:36,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:36,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:36,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:36,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277945402] [2020-10-13 14:03:36,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:36,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:36,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619764657] [2020-10-13 14:03:36,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:36,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:36,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:36,325 INFO L87 Difference]: Start difference. First operand 1841 states and 3047 transitions. Second operand 4 states. [2020-10-13 14:03:42,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:42,293 INFO L93 Difference]: Finished difference Result 4743 states and 7886 transitions. [2020-10-13 14:03:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:03:42,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 215 [2020-10-13 14:03:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:42,310 INFO L225 Difference]: With dead ends: 4743 [2020-10-13 14:03:42,311 INFO L226 Difference]: Without dead ends: 3343 [2020-10-13 14:03:42,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:42,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2020-10-13 14:03:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3247. [2020-10-13 14:03:42,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-13 14:03:42,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5393 transitions. [2020-10-13 14:03:42,435 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5393 transitions. Word has length 215 [2020-10-13 14:03:42,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:42,435 INFO L479 AbstractCegarLoop]: Abstraction has 3247 states and 5393 transitions. [2020-10-13 14:03:42,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:03:42,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5393 transitions. [2020-10-13 14:03:42,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-13 14:03:42,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:42,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:42,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:03:42,445 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:42,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:42,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1157698807, now seen corresponding path program 1 times [2020-10-13 14:03:42,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:42,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399400795] [2020-10-13 14:03:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:43,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:43,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:46,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:47,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-13 14:03:47,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:03:47,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 14:03:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 14:03:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-13 14:03:47,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 14:03:47,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:47,956 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:47,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:47,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:47,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:03:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:48,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399400795] [2020-10-13 14:03:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:48,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 14:03:48,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756521498] [2020-10-13 14:03:48,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 14:03:48,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:48,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 14:03:48,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 14:03:48,046 INFO L87 Difference]: Start difference. First operand 3247 states and 5393 transitions. Second operand 7 states. [2020-10-13 14:03:48,478 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 273 [2020-10-13 14:03:56,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:56,717 INFO L93 Difference]: Finished difference Result 23598 states and 39321 transitions. [2020-10-13 14:03:56,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 14:03:56,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-10-13 14:03:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:56,793 INFO L225 Difference]: With dead ends: 23598 [2020-10-13 14:03:56,793 INFO L226 Difference]: Without dead ends: 20846 [2020-10-13 14:03:56,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-13 14:03:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20846 states. [2020-10-13 14:03:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20846 to 5940. [2020-10-13 14:03:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5940 states. [2020-10-13 14:03:57,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5940 states to 5940 states and 9878 transitions. [2020-10-13 14:03:57,251 INFO L78 Accepts]: Start accepts. Automaton has 5940 states and 9878 transitions. Word has length 230 [2020-10-13 14:03:57,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:57,252 INFO L479 AbstractCegarLoop]: Abstraction has 5940 states and 9878 transitions. [2020-10-13 14:03:57,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 14:03:57,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5940 states and 9878 transitions. [2020-10-13 14:03:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-13 14:03:57,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:57,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:03:57,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:03:57,266 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:57,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash -433161373, now seen corresponding path program 1 times [2020-10-13 14:03:57,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:57,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221619303] [2020-10-13 14:03:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:57,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:58,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:02,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-13 14:04:02,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-13 14:04:02,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 14:04:02,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 14:04:02,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 14:04:02,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:02,801 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:02,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:02,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:02,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:02,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:04:02,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:02,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221619303] [2020-10-13 14:04:02,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:02,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:02,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235990609] [2020-10-13 14:04:02,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:02,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:02,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:02,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:02,878 INFO L87 Difference]: Start difference. First operand 5940 states and 9878 transitions. Second operand 4 states. [2020-10-13 14:04:03,288 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:04:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:08,922 INFO L93 Difference]: Finished difference Result 8900 states and 14831 transitions. [2020-10-13 14:04:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:08,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 231 [2020-10-13 14:04:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:08,931 INFO L225 Difference]: With dead ends: 8900 [2020-10-13 14:04:08,931 INFO L226 Difference]: Without dead ends: 3487 [2020-10-13 14:04:08,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:08,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2020-10-13 14:04:09,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3485. [2020-10-13 14:04:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3485 states. [2020-10-13 14:04:09,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5789 transitions. [2020-10-13 14:04:09,112 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5789 transitions. Word has length 231 [2020-10-13 14:04:09,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:09,113 INFO L479 AbstractCegarLoop]: Abstraction has 3485 states and 5789 transitions. [2020-10-13 14:04:09,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:09,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5789 transitions. [2020-10-13 14:04:09,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-13 14:04:09,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:09,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:09,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:04:09,128 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:09,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:09,128 INFO L82 PathProgramCache]: Analyzing trace with hash 250655975, now seen corresponding path program 1 times [2020-10-13 14:04:09,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:09,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034306328] [2020-10-13 14:04:09,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:09,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:10,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:14,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-13 14:04:14,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 14:04:14,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:14,573 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:14,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:14,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:14,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:14,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:14,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:14,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034306328] [2020-10-13 14:04:14,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:14,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:14,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077794776] [2020-10-13 14:04:14,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:14,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:14,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:14,627 INFO L87 Difference]: Start difference. First operand 3485 states and 5789 transitions. Second operand 4 states. [2020-10-13 14:04:15,098 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 271 [2020-10-13 14:04:21,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:21,475 INFO L93 Difference]: Finished difference Result 6352 states and 10557 transitions. [2020-10-13 14:04:21,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:21,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 233 [2020-10-13 14:04:21,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:21,483 INFO L225 Difference]: With dead ends: 6352 [2020-10-13 14:04:21,483 INFO L226 Difference]: Without dead ends: 3251 [2020-10-13 14:04:21,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2020-10-13 14:04:21,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 3170. [2020-10-13 14:04:21,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3170 states. [2020-10-13 14:04:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 5213 transitions. [2020-10-13 14:04:21,665 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 5213 transitions. Word has length 233 [2020-10-13 14:04:21,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:21,665 INFO L479 AbstractCegarLoop]: Abstraction has 3170 states and 5213 transitions. [2020-10-13 14:04:21,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 5213 transitions. [2020-10-13 14:04:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-13 14:04:21,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:21,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:21,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:04:21,673 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:21,674 INFO L82 PathProgramCache]: Analyzing trace with hash 332922543, now seen corresponding path program 1 times [2020-10-13 14:04:21,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:21,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148040003] [2020-10-13 14:04:21,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:21,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:22,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:26,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:26,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-13 14:04:26,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:04:26,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:04:26,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 14:04:26,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 14:04:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:27,150 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:27,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:27,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:27,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:27,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:04:27,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:27,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:27,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:27,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148040003] [2020-10-13 14:04:27,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:27,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:27,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946687540] [2020-10-13 14:04:27,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:27,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:27,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:27,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:27,211 INFO L87 Difference]: Start difference. First operand 3170 states and 5213 transitions. Second operand 4 states. [2020-10-13 14:04:32,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:32,685 INFO L93 Difference]: Finished difference Result 8396 states and 13839 transitions. [2020-10-13 14:04:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:32,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 234 [2020-10-13 14:04:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:32,695 INFO L225 Difference]: With dead ends: 8396 [2020-10-13 14:04:32,695 INFO L226 Difference]: Without dead ends: 5618 [2020-10-13 14:04:32,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2020-10-13 14:04:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5337. [2020-10-13 14:04:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5337 states. [2020-10-13 14:04:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5337 states to 5337 states and 8736 transitions. [2020-10-13 14:04:32,977 INFO L78 Accepts]: Start accepts. Automaton has 5337 states and 8736 transitions. Word has length 234 [2020-10-13 14:04:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:32,978 INFO L479 AbstractCegarLoop]: Abstraction has 5337 states and 8736 transitions. [2020-10-13 14:04:32,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5337 states and 8736 transitions. [2020-10-13 14:04:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 14:04:32,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:32,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:32,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:04:32,992 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:32,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:32,992 INFO L82 PathProgramCache]: Analyzing trace with hash 148436396, now seen corresponding path program 1 times [2020-10-13 14:04:32,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:32,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421437676] [2020-10-13 14:04:32,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:33,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:33,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 14:04:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:38,455 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:38,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:38,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:38,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:38,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:38,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:04:38,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:38,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:38,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:38,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:38,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421437676] [2020-10-13 14:04:38,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:38,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:38,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511570174] [2020-10-13 14:04:38,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:38,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:38,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:38,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:38,518 INFO L87 Difference]: Start difference. First operand 5337 states and 8736 transitions. Second operand 4 states. [2020-10-13 14:04:38,907 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:04:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:44,113 INFO L93 Difference]: Finished difference Result 7785 states and 12754 transitions. [2020-10-13 14:04:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:44,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-10-13 14:04:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:44,119 INFO L225 Difference]: With dead ends: 7785 [2020-10-13 14:04:44,120 INFO L226 Difference]: Without dead ends: 2767 [2020-10-13 14:04:44,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:44,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2020-10-13 14:04:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2765. [2020-10-13 14:04:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2765 states. [2020-10-13 14:04:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 4513 transitions. [2020-10-13 14:04:44,269 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 4513 transitions. Word has length 249 [2020-10-13 14:04:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:44,270 INFO L479 AbstractCegarLoop]: Abstraction has 2765 states and 4513 transitions. [2020-10-13 14:04:44,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 4513 transitions. [2020-10-13 14:04:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-13 14:04:44,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:44,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:44,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:04:44,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1465859755, now seen corresponding path program 1 times [2020-10-13 14:04:44,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:44,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226794764] [2020-10-13 14:04:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:44,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:45,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:49,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-13 14:04:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:04:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:49,734 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:49,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:49,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:49,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:49,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226794764] [2020-10-13 14:04:49,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:49,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:49,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152930592] [2020-10-13 14:04:49,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:49,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:49,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:49,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:49,797 INFO L87 Difference]: Start difference. First operand 2765 states and 4513 transitions. Second operand 4 states. [2020-10-13 14:04:50,191 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:04:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:54,691 INFO L93 Difference]: Finished difference Result 5301 states and 8658 transitions. [2020-10-13 14:04:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:54,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 249 [2020-10-13 14:04:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:54,699 INFO L225 Difference]: With dead ends: 5301 [2020-10-13 14:04:54,700 INFO L226 Difference]: Without dead ends: 2765 [2020-10-13 14:04:54,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:54,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2020-10-13 14:04:54,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2765. [2020-10-13 14:04:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2765 states. [2020-10-13 14:04:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2765 states to 2765 states and 4509 transitions. [2020-10-13 14:04:54,830 INFO L78 Accepts]: Start accepts. Automaton has 2765 states and 4509 transitions. Word has length 249 [2020-10-13 14:04:54,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:54,830 INFO L479 AbstractCegarLoop]: Abstraction has 2765 states and 4509 transitions. [2020-10-13 14:04:54,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:54,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2765 states and 4509 transitions. [2020-10-13 14:04:54,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 14:04:54,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:54,835 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:04:54,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:04:54,835 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:54,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:54,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1024944536, now seen corresponding path program 1 times [2020-10-13 14:04:54,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:54,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292207900] [2020-10-13 14:04:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:54,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:59,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 14:04:59,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:04:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 14:04:59,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 118 [2020-10-13 14:04:59,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 14:04:59,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:00,318 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:00,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:00,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:00,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:00,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:00,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:05:00,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:00,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:00,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:00,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:00,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292207900] [2020-10-13 14:05:00,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:00,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:00,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540118735] [2020-10-13 14:05:00,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:00,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:00,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:00,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:00,427 INFO L87 Difference]: Start difference. First operand 2765 states and 4509 transitions. Second operand 4 states. [2020-10-13 14:05:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:05,549 INFO L93 Difference]: Finished difference Result 7165 states and 11709 transitions. [2020-10-13 14:05:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:05,549 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2020-10-13 14:05:05,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:05,555 INFO L225 Difference]: With dead ends: 7165 [2020-10-13 14:05:05,555 INFO L226 Difference]: Without dead ends: 4801 [2020-10-13 14:05:05,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:05,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4801 states. [2020-10-13 14:05:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4801 to 4510. [2020-10-13 14:05:05,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4510 states. [2020-10-13 14:05:05,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4510 states to 4510 states and 7302 transitions. [2020-10-13 14:05:05,881 INFO L78 Accepts]: Start accepts. Automaton has 4510 states and 7302 transitions. Word has length 252 [2020-10-13 14:05:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:05,882 INFO L479 AbstractCegarLoop]: Abstraction has 4510 states and 7302 transitions. [2020-10-13 14:05:05,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 4510 states and 7302 transitions. [2020-10-13 14:05:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 14:05:05,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:05,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:05,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:05:05,890 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:05,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:05,890 INFO L82 PathProgramCache]: Analyzing trace with hash 219204493, now seen corresponding path program 1 times [2020-10-13 14:05:05,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:05,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585041277] [2020-10-13 14:05:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:05,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:07,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:10,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:10,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 14:05:10,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 14:05:10,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:11,421 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:11,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:11,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:11,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:11,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:05:11,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:11,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:11,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585041277] [2020-10-13 14:05:11,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:11,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:11,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616111513] [2020-10-13 14:05:11,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:11,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:11,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:11,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:11,541 INFO L87 Difference]: Start difference. First operand 4510 states and 7302 transitions. Second operand 4 states. [2020-10-13 14:05:11,949 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:05:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:16,596 INFO L93 Difference]: Finished difference Result 6509 states and 10548 transitions. [2020-10-13 14:05:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:16,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2020-10-13 14:05:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:16,600 INFO L225 Difference]: With dead ends: 6509 [2020-10-13 14:05:16,600 INFO L226 Difference]: Without dead ends: 2345 [2020-10-13 14:05:16,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2345 states. [2020-10-13 14:05:16,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2345 to 2343. [2020-10-13 14:05:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-10-13 14:05:16,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3781 transitions. [2020-10-13 14:05:16,748 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3781 transitions. Word has length 267 [2020-10-13 14:05:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:16,749 INFO L479 AbstractCegarLoop]: Abstraction has 2343 states and 3781 transitions. [2020-10-13 14:05:16,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:16,749 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3781 transitions. [2020-10-13 14:05:16,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2020-10-13 14:05:16,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:16,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:16,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:05:16,753 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1023012072, now seen corresponding path program 1 times [2020-10-13 14:05:16,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:16,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692778505] [2020-10-13 14:05:16,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:16,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:19,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:19,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:19,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:19,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:21,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:21,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-13 14:05:21,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:05:21,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:05:21,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-13 14:05:21,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 14:05:21,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:22,258 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:22,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:22,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:22,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692778505] [2020-10-13 14:05:22,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:22,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:22,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094403311] [2020-10-13 14:05:22,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:22,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:22,329 INFO L87 Difference]: Start difference. First operand 2343 states and 3781 transitions. Second operand 4 states. [2020-10-13 14:05:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:27,264 INFO L93 Difference]: Finished difference Result 5875 states and 9491 transitions. [2020-10-13 14:05:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:27,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2020-10-13 14:05:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:27,269 INFO L225 Difference]: With dead ends: 5875 [2020-10-13 14:05:27,269 INFO L226 Difference]: Without dead ends: 3969 [2020-10-13 14:05:27,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3969 states. [2020-10-13 14:05:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3969 to 3677. [2020-10-13 14:05:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2020-10-13 14:05:27,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5873 transitions. [2020-10-13 14:05:27,447 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5873 transitions. Word has length 267 [2020-10-13 14:05:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:27,447 INFO L479 AbstractCegarLoop]: Abstraction has 3677 states and 5873 transitions. [2020-10-13 14:05:27,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5873 transitions. [2020-10-13 14:05:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-13 14:05:27,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:27,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:27,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 14:05:27,453 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:27,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:27,453 INFO L82 PathProgramCache]: Analyzing trace with hash 6050084, now seen corresponding path program 1 times [2020-10-13 14:05:27,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:27,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404735789] [2020-10-13 14:05:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:27,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:27,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:32,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 14:05:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:32,936 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:32,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:32,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:33,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404735789] [2020-10-13 14:05:33,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:33,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:33,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118558619] [2020-10-13 14:05:33,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:33,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:33,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:33,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:33,009 INFO L87 Difference]: Start difference. First operand 3677 states and 5873 transitions. Second operand 4 states. [2020-10-13 14:05:33,418 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:05:37,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:37,734 INFO L93 Difference]: Finished difference Result 7107 states and 11351 transitions. [2020-10-13 14:05:37,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:37,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 282 [2020-10-13 14:05:37,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:37,738 INFO L225 Difference]: With dead ends: 7107 [2020-10-13 14:05:37,739 INFO L226 Difference]: Without dead ends: 3677 [2020-10-13 14:05:37,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:37,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2020-10-13 14:05:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3677. [2020-10-13 14:05:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3677 states. [2020-10-13 14:05:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3677 states to 3677 states and 5864 transitions. [2020-10-13 14:05:37,884 INFO L78 Accepts]: Start accepts. Automaton has 3677 states and 5864 transitions. Word has length 282 [2020-10-13 14:05:37,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:37,885 INFO L479 AbstractCegarLoop]: Abstraction has 3677 states and 5864 transitions. [2020-10-13 14:05:37,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 3677 states and 5864 transitions. [2020-10-13 14:05:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 14:05:37,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:37,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:37,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 14:05:37,889 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:37,889 INFO L82 PathProgramCache]: Analyzing trace with hash -312994897, now seen corresponding path program 1 times [2020-10-13 14:05:37,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:37,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589555315] [2020-10-13 14:05:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:39,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:42,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 14:05:42,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 14:05:42,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:43,348 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:43,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:43,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:43,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:43,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589555315] [2020-10-13 14:05:43,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:43,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:43,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81869758] [2020-10-13 14:05:43,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:43,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:43,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:43,429 INFO L87 Difference]: Start difference. First operand 3677 states and 5864 transitions. Second operand 4 states. [2020-10-13 14:05:43,839 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:05:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:48,286 INFO L93 Difference]: Finished difference Result 7098 states and 11317 transitions. [2020-10-13 14:05:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:48,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2020-10-13 14:05:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:48,290 INFO L225 Difference]: With dead ends: 7098 [2020-10-13 14:05:48,291 INFO L226 Difference]: Without dead ends: 3687 [2020-10-13 14:05:48,295 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:48,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-10-13 14:05:48,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3683. [2020-10-13 14:05:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3683 states. [2020-10-13 14:05:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3683 states to 3683 states and 5868 transitions. [2020-10-13 14:05:48,437 INFO L78 Accepts]: Start accepts. Automaton has 3683 states and 5868 transitions. Word has length 285 [2020-10-13 14:05:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:48,437 INFO L479 AbstractCegarLoop]: Abstraction has 3683 states and 5868 transitions. [2020-10-13 14:05:48,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 3683 states and 5868 transitions. [2020-10-13 14:05:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-10-13 14:05:48,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:48,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:48,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 14:05:48,443 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:48,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:48,444 INFO L82 PathProgramCache]: Analyzing trace with hash 826191200, now seen corresponding path program 1 times [2020-10-13 14:05:48,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:48,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748359678] [2020-10-13 14:05:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:49,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:53,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-13 14:05:53,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 14:05:53,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:53,922 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:53,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:53,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:53,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:53,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:05:53,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:53,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:53,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:53,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:53,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748359678] [2020-10-13 14:05:53,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:53,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:53,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868227744] [2020-10-13 14:05:53,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:53,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:53,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:53,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:53,989 INFO L87 Difference]: Start difference. First operand 3683 states and 5868 transitions. Second operand 4 states. [2020-10-13 14:05:54,408 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 269 [2020-10-13 14:05:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:58,549 INFO L93 Difference]: Finished difference Result 5249 states and 8369 transitions. [2020-10-13 14:05:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:05:58,550 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2020-10-13 14:05:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:58,553 INFO L225 Difference]: With dead ends: 5249 [2020-10-13 14:05:58,554 INFO L226 Difference]: Without dead ends: 1953 [2020-10-13 14:05:58,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:05:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2020-10-13 14:05:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1951. [2020-10-13 14:05:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-10-13 14:05:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3097 transitions. [2020-10-13 14:05:58,634 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3097 transitions. Word has length 285 [2020-10-13 14:05:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:58,634 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 3097 transitions. [2020-10-13 14:05:58,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3097 transitions. [2020-10-13 14:05:58,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-13 14:05:58,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:58,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:05:58,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 14:05:58,637 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:58,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:58,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1305287032, now seen corresponding path program 1 times [2020-10-13 14:05:58,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:58,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840013517] [2020-10-13 14:05:58,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:58,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:58,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:00,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:03,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:03,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-13 14:06:03,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:06:03,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 14:06:03,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-13 14:06:03,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-13 14:06:03,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:04,113 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:06:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:04,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:04,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:04,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:04,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:06:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:04,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:04,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1840013517] [2020-10-13 14:06:04,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:04,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:04,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998284958] [2020-10-13 14:06:04,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:04,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:04,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:04,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:04,188 INFO L87 Difference]: Start difference. First operand 1951 states and 3097 transitions. Second operand 4 states. [2020-10-13 14:06:04,585 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 268 [2020-10-13 14:06:10,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:06:10,606 INFO L93 Difference]: Finished difference Result 4539 states and 7241 transitions. [2020-10-13 14:06:10,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:06:10,607 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 288 [2020-10-13 14:06:10,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:06:10,612 INFO L225 Difference]: With dead ends: 4539 [2020-10-13 14:06:10,612 INFO L226 Difference]: Without dead ends: 3118 [2020-10-13 14:06:10,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:06:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2020-10-13 14:06:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 3097. [2020-10-13 14:06:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2020-10-13 14:06:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4921 transitions. [2020-10-13 14:06:10,745 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4921 transitions. Word has length 288 [2020-10-13 14:06:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:06:10,745 INFO L479 AbstractCegarLoop]: Abstraction has 3097 states and 4921 transitions. [2020-10-13 14:06:10,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:06:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4921 transitions. [2020-10-13 14:06:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-13 14:06:10,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:06:10,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 14:06:10,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 14:06:10,749 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:06:10,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:06:10,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2053213916, now seen corresponding path program 1 times [2020-10-13 14:06:10,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:06:10,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183896905] [2020-10-13 14:06:10,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:06:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:10,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:10,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:11,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:12,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:15,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:15,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-13 14:06:15,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:06:15,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:16,235 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:06:16,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:06:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:06:16,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:06:16,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:06:16,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:06:16,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:06:16,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:06:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:06:16,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183896905] [2020-10-13 14:06:16,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:06:16,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:06:16,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476902076] [2020-10-13 14:06:16,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:06:16,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:06:16,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:06:16,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:06:16,301 INFO L87 Difference]: Start difference. First operand 3097 states and 4921 transitions. Second operand 4 states. [2020-10-13 14:06:16,717 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 268